4.3L TURBO MODS-OUR INFINITY WAR ON V6 PERFORMANCE!

[@Second-gear]

I love the 4.3L engine!!! I'm guessing Edelbrock could make some money off of us 4.3L people if they offered top end options. 😁

[@FootageFactory]

I would love if they would!!

[@Scott_Buchanan]

If a 4.3 is 3/4 of a 350, could somebody take some aftermarket 350 heads and cut the front off?

[@Second-gear]

@@Scott_Buchanan I noticed that this same KZbin channel has a video back on November 1st of 2020 titled, ' 350 LT1 or LT4 HEADS ON 4.3L L99? WILL THE FIT?' I myself have not viewed the 33 minute video yet, but sounds interesting.

[@sikbrik]

@@Second-gear L99 is a v8 4.3

[@Second-gear]

@@sikbrik You are correct, the L99 out of the Chevrolet Caprice is a V-8, but we were referring to the LU3 4.3L V-6 out of GM's light duty trucks and vans.

[@russellpoyner9362]

Answer to the question at the beginning: I'm a huge fan of the 4.3.

[@carolmolina4818]

Have you laid eyes or hands on a marine turbo 4.3 with an aftermarket block and heads fully built low boost = about 650 hspr

[@CraftsmanQuad19]

I pulled with my 4.3 today. With a 5 speed behind it. No hot rod but it is a working mule

[@AreaThirteenThirteen]

Good engine. I had a 1999 S-10 with one, bought it brand new, had 250 K on the clock when I sold it and was still running perfectly.

[@jasonsparshott7208]

I've always wanted to build one and stab it in a small rear wheel drive import like a Starlet or a Datsun 210 ! I mean the SBC has been proven time and time again and that's all a 4.3 is a 350 with 2 cylinders chopped off .

[@VroomNBoom]

Same all it is is a 350 with the rear 2 cylinders cut off basically huge fan of the 4.3 I'm gonna twin one one day with twin 45mm

[@addmoreboostOG]

Rich, keep the Vortec heads so "the other guys" can replicate your efforts. Find the vortec heads' potential on the 4.3, perhaps just springs and pocket/short turn radius porting. There's a marine mercruiser intake manifold, single plane, for vortec heads on Amazon for about $250. It's a low profile speadbore cast iron intake setup for vortec head with the 8 vertical bolts. The Brodix stuff would be cool for the other other guy$. Most of us don't have tho$e pockets. Thanks for the content man!

[@vintagetintrader1062]

addmoreboost these can be found cheap at marine places as a lot of these engines are removed to make room for V8s

[@vtwinaddicted5852]

100%

[@chriscatarcio9933]

@@vintagetintrader1062 l never see anything (CHEEP) AT THOSE MIRE. PLACES.

[@docholliday4546]

​@@chriscatarcio9933CHEAP*

[@randynorris6745]

I am ANY fan of the 6 cylinder setup!!! Especially since the Buick 3.8 inter cooled turbo V-6! The 6 cylinder engines, never really got their full appreciation of their potential and power abilities!!!! The first engine I ever built… was a 300 6-cylinder Ford!! Even though it had a 3-speed behind it…. It was truly a terror, from stoplight to stoplight, in my high school days. I had a Muskegon .514” lift cam in it, with a Clifford aluminum, 4-barrel intake, and a set of Cyclone Headers on it with duals…. Also had. 3.55:1 rear end! Man…. I had ALOT of fun annililating Iroc Camaros back then!! Those tuned port 305’s couldn’t hold a candle to me man…. Ahhh the fun we used to have….

[@scottc0510]

I definitely agree that these 4.3 Vortecs deserve far better aftermarket support, especially from Edelbrock, Holley, etc...

[@thatautogarage3644]

Regardless of how the test turned out it was cool to see a 4.3 on the dyno.

[@lb9gta307]

I dig the 4.3 V6. I'd be into seeing some a GM 3.4 V6 as well. They're dirt cheap and plentiful. Boost one to the moon!

[@troymecey]

I wish there was a good aftermarket for the 4.3

[@carolmolina4818]

There is just really marine application can be modded for auto use have put a 4.3 in Buick regal g body with mild but fully built bottom end was good for 650 low boost

[@fastinradfordable]

I replaced a starter motor in a boat with 4.3. Damn starter under the engine with zero access.

[@scottc0510]

So do I.... I don't think these aftermarket performance parts manufacturers realize how many of these are still in use and available for builders... Probably a pretty sizeable and surprizing number of people who would really appreciate it...

[@mpetersen6]

@@RANDOMNATION907 Take the Chrysler engine transmission combo from the Interpids. If someone was building a mid-engined kit car with a sub 2000 lbs chassis you got your engine transaxle in one package. The 3.5 had 225 horses from the factory. And for a four valve head it's not super wide.

[@mpetersen6]

Remember when GM took a prepped Syclone out to the salt flats. The next year a drive train engineer from Chrysler took a Comanche to Bonneville and took all of the records GM had set. He put the Comanche together in his garage

[@bigvegass]

Owned a Syclone for a while. Was the funnest truck and the most infuriating vehicle to work on.

[@92coupelx]

So true, I had Typhoon #0046. I always said the GM engineers put 10 lbs of s#!t in a 5 lb bag with the SY/TY's. But it was fun driving around and getting looks from people in the know.

[@Backyardmech1]

I have an S10 and just working on a 4.3 in that little truck can be aggravating. I don’t even want to know how much more it can be with a turbo setup on it.

[@-Atrocious]

Try owning a syty and a 300zx and or a dsm one better get a good pair of shoes or a bike if ya wanna to go anywhere.

[@seanathair432]

Big fan of the 3/4 350! For only 160 hp it motivates my 1990 Jimmy s15 nicely, and it has 228k miles

[@troymecey]

Mine is a 4.3 powered 92 Chevrolet 1500 with 209k. Runs great.

[@tyrell2159]

seems like urs still young. mine is at 338xxx on the odometer. still going strong . no smoke

[@troymecey]

@@tyrell2159 mine smokes on start up only. Has for many years. It was my dads truck and he really only drove it on short trips. He really wanted a V8 and I have all the stuff to swap it, but I'm reconsidering it and just build a new and better 4.3.

[@kurtking5913]

Keep changing the oil you will have it for quite some time

[@frigglebiscuit7484]

same. my 4.3 89 s10 blazer is peppy as hell.

[@johnbehneman1546]

Thank you!!!!! SO MUCH FUN!!!! Make those upgrades and port and polish the heads!!!!! WOW!!!! CHEAP, FAST, HORSEPOWER!!!! That is what hot rodding is all about!!!!! Add some ARP bolts for durability as well. So many basic options to start with.

[@jorgem3272]

I love the 4.3’s I did some research and the newer 4.3 engines like 14+ newer heads slow great and there was a guy on Facebook that cut a Holley high rise and made a 6 cylinder one

[@andyharman3022]

I had a Syclone, and it was really nice in a straight line. But the engine was all done at 4800 rpm. It was frustrating for a sports car guy like me to drive because the front end and rear end seemed to be on different schedules when negotiating a turn. It had a lot of initial understeer on turn-in, so I would crank a little more steering in. Then the rear end would start to come around, and I would have to unwind the wheel. The net result was that I could never carve a smooth arc through a turn, as in my Camaro. Another frustration was no manual transmission was available. The truck was great for passing traffic on two-lane roads. And when I put winter tires on it, the 0-60 acceleration on snow was stupendous. My fantasy was to put twin turbos on it and a cam that would get the engine to 5500 rpm, then a 6-speed manual, and an independent rear suspension. But i sold it before any of that could happen.

[@andyharman3022]

@303StreetMachines Thanks for the link. The video seemed familiar, so I scrolled down the comments and found a comment I made on it four years ago. I made almost the identical complaint about the handling back then.

[@IacobucciB]

I seriously think Richard never sleeps. Still, I love how much great information he can spout off in every one of his videos. The 4.3 might not be a super dollar-friendly base for big power, but there are still a few folks out there building these things for boats, S-10s etc. that will find this invaluable. I’d really like to see what a split-pin 4.3 with the Brodix heads and a single plane with a healthier cam would do with that CXRacing unit. Now that would be a quick little fine rig.

[@-Atrocious]

Send me a Crower or billet crankshaft and I'll show you even with your choice of either hyd or a solid roller haha. Cause my stock cranks are prob gonna snap.

[@johnbehneman1546]

GREAT VIDEO RICHARD!!! A TUNED PORT INTAKE WOULD REALLY BE NICE !!!!! THIS COMBO COULD YIELD GREAT POWER AND ECONOMY. THANKS FOR SHARING!!!

[@pancudowny]

Rich: Perhaps the thing to have tried would've been a Edelbrock Performer TBI manifold, bored-out & fitted with the TBI unit from a Mk 5 454 fitted with the injector spacer Holley offers for the GM TBI units. I'd still be blow-through, but at least you'd have a larger plenum in the manifold, and better control over fueling while introducing the fuel soon--which you say is best for best performance with injection--to help cool the boost charge.

[@ttdolson1]

Kurt urban and Dave Henninger have went thru the 4.3 from front to back. You may want to contact either of them for some very valuable info... If I remember correctly, they used Pontiac performance parts. Somehow GM made high performance parts for this engine, but labeled them as Pontiac to disguise the efforts. Hope this helps.

[@trillrifaxegrindor4411]

this was an old build and someone elses engine to begin with

[@beaches2mountains230]

I Absoutely loved the Syclone/Typhoon and totally agree the Grand National was the lesser of the great GM turbo v6's. All hail awd turbo v6 trucks!

[@matmichalke5734]

I’d love to see this thing with a mild port on the heads, correct springs and a bigger cam

[@timoneal9654]

I had a new '92 Astro Van with the 4.3L. It was a peppy motor considering it was in a van and the weight. I'm betting there are quite a few small cars that could fit the 4.3L versus a SBC. Thanks for the testing. Hey, I just bought a '03 Mustang convertible with the 3.8L V-6 yesterday. Maybe you can work on that one soon or maybe I just get it over with and do a LS swap ;-)

[@patrickveal5435]

My 87 R2500 Sierra has a 262 4.3L married to a thm400. I'm loving these ideas because I currently put down around 200hp at the flex plate. I do want to build it to be a better hauler as I'm always pulling stuff with it and driving all over Georgia for work.

[@patrickveal5435]

It's also a matching numbers truck and I would love to get more power from the engine so I can keep it a matching numbers truck

[@charliedee9276]

Knew a guy who put a 4.3 in a Jeep CJ-7. It had the torque of the old 258 AMC straight six with much more hp up top. Ran it with an Edelbrock Performer carb and an HEI ignition. Almost perfect engine for a CJ.

[@yodawunn6700]

YES! Build for your application! Choose the heads, cam, and induction for what you want to do, then build the bottom end to stay under it! It's so simple like the boogaloo, yet it evades so many.

[@warrenstephens3705]

I will be looking for the next 4.3 test!!!!!

[@HeadFlowInc]

We flexed/bent a SyTy crankshaft between 600-650hp crankshaft. The only sign was a slight drop in the hot oil pressure, after disassemble we found it wiped a main bearing over an oil feed hole. Good luck very interested in the follow up mods!

[@vettesrule3170]

4.3l v6 LV3 is THE other super hero. PLEASE test one of these!!

[@92coupelx]

I had a 92' Typhoon, it was a fun little suv. Lost it in the flooding of hurricane Harvey

[@Chingon1]

Why didn’t you sue Harvey??

[@aliciaANDanthonySandoval]

Try 1.6 rocker arms ls6 beehive springs and port the vortec heads. Try the marine fuel rail intake aswell would be nice to see. I have a 1998 gmc sonoma 4wd i would like to make in to a cyclone. Maybe one day.

[@kennethblackmore2146]

Better rocker arms is no problem as all the V8 valvetrain fits, the big issue is trying to find a valve cover to go over them

[@dondotterer24]

We ran a 85 4.3. Probably had the swirl port heads. I took the tall TBI intake and adapted a Rochester 2bbl with some port work mainly for fuel distribution. Ran a "torque " cam in it with home brued headers 34 deg total timing. For a compact demolition car. It worked great . Ran it through about 5 derbies. Got hot a couple of times and would barely turn over. But we ran the Mobil racing oil. 1st place in 2. The last one was a big fight but the best in Van Wert county history. That's what I believe. THANKS FOR THE 4.3 VIDEOS

[@roknroy1]

i like that you show real world results, good or otherwise!

[@richardholdener1727]

It doesn't always work out

[@aumetalmental8403]

Something that might add to this valve floating issues. I had the same problem at higher rpm. I found out an easy, cheap helper fix depending on how high an rpm you're looking for. I ran a high pressure/high volume oil pump on my rebuilds and it really did work. Had to set value lash at "maximum" of 1/4 turn or it would hold the valves open and it runs like crap...just saying. 😎✌️

[@edpetrocelli2633]

If you want to go max-effort mat I suggest get ya a set of Champion Cylinder Heads in Palmn Coast Fla. Tom has the market cornered on those 4.3 V-6`s. They look nice, new pieces, machines them in house. I`m surprised I didnt see any comments about them below.

[@ricvis44]

By far my favorite video. There are millions of those 4.3’s out there. Including mine!

[@mikef-gi2dg]

I like the way you described the issues with the 4.3. I got to see the prototype typhoon and cyclone's run at Detoit Dragway, 89, 90,91...and they were clicking off low 12's like nothing. Been a big fan ever since. I have a complete 4.3 TBI motor out of a 91 s10. I want to put it in my 75 Monza 2+2. The n/a results you had on the 4.3 would be a great place to start, compared to stock. To do a turbo, I would need Dyno access, and lots of it, that blows up the budget, unless I really limit the boost, 400hp is good with me. A centrifugal or roots would allow me to control boost, so I will be watching for more 4.3, trying to decide which way to go and how far!

[@blahbadyblah7928]

You can get more lift by changing the Rocker arm ratio to 1.6. Cutting the center out of annual plane intake usually kills power. Instead, just cut a notch about 1/4" deep and 1" long on top-middle of the divider.

[@stoweby]

Need some follow ups on the 4.3l. Just bought an old school van so it's time to tinker

[@robisabell5607]

Awesome job on the 4.3 testing. I’ve got a ‘14 direct injection 4.3, and would love to see the horsepower gains with a cam and turbo setup. Any chance you could do a Big Bang test on one of these?

[@Scott_Buchanan]

That would be awesome!

[@plap.]

@@Scott_Buchanan there are channels vids out there for this newer version, LV3 2014 and up getting 600hp pretty easily

[@johnvandeven4473]

Hey Rich, would love to see a redo after some better valve train installed in those heads, keep up the good work

[@SoI_Badguy]

I love the old 4.3 (hell I daily one), but I'd love to see the LV3 (the aluminum DI 4.3 that came in everything after 2014)

[@nathanmcbride1462]

Yeah. I’ve only seen one pickup with it played with. Just not much out for the direct Injection stuff. They were limited to around 400whp and then couldn’t get it enough fuel.

[@CraftsmanQuad19]

berk, is yours an s10 or c1500? Tbi? Spider? Carb? SFI? My backup daily/tow rig is a c1500 tbi 4.3 5 speed

[@johnlewis8156]

Can the LV3 heads work on a old 4.3? That maybe the only easy head upgrade out there for old 4.3's

[@ShyaMiss]

@@johnlewis8156 no, the difference is akin to comparing the old vortec 350 to the new LT1 based 6.2 or 5.3 in the trucks. Totally different animal.

[@apprenticefelix7740]

yes

[@ejm406]

Iv had a few typhoons, they are rocket ships. Love the 4.3L

[@jessesims4654]

I had a 90 GMC S-15 with a 4.3. With a built 700r4 and powertrax diff locker. That thing would embarrass and leave factory hot rods at the red light. Made it even better that it looked like shit. 3 different primer colors and a rusty roof. I loved it.

[@mikej9932]

4.3 v6 is a really good engine with tons of potential wish there was more performance parts out there for this engine.

[@synshenron798]

The heads are ome of the biggest things holding this engine back. They need good flowing heads to really wake up the engine

[@frankbarlow3154]

Super excited I have a 91 block 96 vortec heads with 280hr cam. This will be interesting

[@mattturner65]

Do the 4.3 vortec heads accept more lift than the 5.7 heads or should they be machined to accept more than .475 lift?

[@biggetl1319]

Love the 4.3! Had one in a 1990 GMC S15, best engine I ever had! 290,000 mi on it when donated it to Rawhide. LOL It did leak oil from ever ware it could leak.

[@burnz221]

What bout using the mercruiser intake manifold?

[@richardbristow14]

If you wanted to make it fuel injected you can use the marine intake. You could possibly use the carb marine intake

[@kennethrand1032]

I had a syclone mine was number 1967 of 3000 made I built the engine ported the heads ran a kenne bell front mount 36lb.hr injectors and a 20g turbocharger i ran mid 11's all day long with a 2,800 stall converter

[@-Atrocious]

Who got 0823 I want it alive or dead.

[@kennethrand1032]

I had 1967 I loved that truck

[@jaxperez7860]

I cant wait for more videos on this , I'm going with twin turbos on my 4.3 , and dropping it back in my oldsmobile bravada

[@houstonbinkley1844]

The Eco-tec 4.3 turbo!!!!! I've been debating trying it out.

[@kylanlarsen6752]

Me too!

[@shadowopsairman1583]

GM should Do it by factory.

[@jtswhitewater4940]

I was happy with the stock 4.3 5speed in my Silverado pick up. Was good in my Sonoma too. Always would have liked the fuel economy with a bit more power though.

[@jasonfikes9514]

A follow up test or a retest (however you want to look at it) would great. If you are able to do this test all over again, would you be willing to make a video of the components you chose and how you came to that decision?

[@jamiel3504]

Love my 02 blazer ZR2 5speed manual , the 4.3 still runs nicely and would eventually love to syclone turbo it eventually 👍

[@22lambo]

I would love to see a big bang with a Honda J series junkyard engine

[@richardholdener1727]

yes

[@michaelblacktree]

That would be cool! The K series is nice and all, but IMO a V6 sounds better than a 4-banger.

[@andrekershaw3903]

Can you configure a setup that fits in a Astro/Safari?

[@richardholdener1727]

the turbo or blower system can be configured for a chassis-we just do it for the dyno

[@willdabeastindy]

I myself would love to see some mods on the 4.3 for the Astro/Safari. A lot of comments say throw a 350 at it but easier said than done in a van. I have an AWD and oil pan issues even worse. I would like to see real world mods for us, other,other guy's. Thanks Richard, best channel on YT 😁👍

[@lostkauz83]

Now do the balance shaft engine with CSPI so I know what I need to do correctly since mines already heavily built lol

[@Fljeff7]

have you looked at the mercury marine 4.3 MPI intake manifold

[@stevesrailway]

I have a 4.3 in my 91' Scottsdale. I've been following your 4.3 work and wondered when you might give us a further update? Also, what about using an aftermarket TBI system?

[@shadjohnsen8143]

@richardholdener did you ever sort out the problems here so we can see the true potential of the 4.3? I can’t find the video if you did.

[@hakokiri3627]

I believe Speed o motive used to have a 4.3L crate motor. Id like to see this engine on 93 octane only once its sorted out. Comp 280HR cam? Beehive valve springs?

[@-Atrocious]

Used to be home of the original stock 4.3 v6 stroker cranks. Offset ground 4.3 cranks. We used to make them at my old speed shop and grind down the cranks to a 2" rod journal and use 350 rods. That place was around a long time. I assume hope it still is.

[@apollorobb]

Been waiting for you to do a 4.3 video. I had a built one in a SWB 2001 silvy that had 400 sleeves in it with aluminum heads and a custom ground cam it had a Mercury marine intake with the external injectors that truck outran a lot of V8 trucks i always wanted to Turbo it . Great Video Richard

[@0zmosis2001]

My first vehicle was a 1993 Chevrolet S10 Blazer Tahoe edition four-wheel drive and a 4.3 vortec under the hood and when I got rid of it it had 200,000 in the still running strong only thing major I had to do was a head gasketthat was a long time ago and I still yearn for a typhoon or cyclone! Maybe one day. Anyways I was ecstatic when I seen you boosted a 4.3 keep em Rollin in

[@Brice.Gibson]

Richard, you should look into big bore 4 cylinders, mainly a 3.7 mercruiser. Aluminum block with what I read a GM bell housing bolt pattern 429/460 big block ford head, pistons and connecting rods. Can pick these motors up for cheap.

[@richardholdener1727]

i like the BBF head motor

[@Brice.Gibson]

Richard Holdener imagine the torque that could be made on that 4cyl with Boooost Hahahaha

[@jeffrywade6072]

Convince me to save all the LS conversion stuff I bought for my G20 van and just throw a turbo on instead 😁

[@AustinRBa]

Or do the Ls AND a turbo? G20's are kickass. Getting my ass handed to me at a stoplight by one would be an honor.

[@johnlewis8156]

You can always find something to LS. I'm in a similar boat. I got everything to 5.7 hemi swap my b1500 but now I wanna just turbo the 318. If you turbo the 4.3 it will still make 350-400 HP . And be cool!!!

[@DBSSTEELER]

I had a 4.3 in a 92 GMC truck. It was a great little motor.

[@mikelaumaillier9271]

Would be nice to see the battle of the 6's, 4.3 V6 vs 292 L6 each equipped with all the "good stuff". Thanks for all the great content.

[@sbc350]

How about turbo 3.4 60degree v6? Ever tested those engines?

[@timothybayliss6680]

I would only approve if it's the dohc version from the gran prix gtp. My buddy had one with a five speed, it was a rocket.

[@richardholdener1727]

I have run and modded the 3.4L Twin Dual cam motors

[@Mr34blazer]

I would also like to see the LZx V6"s get more love. Alot of potential that is overlooked because it is not mainstream.

[@burntorangeak]

I still feel each and every one of your spiritual judo chops.

[@dannycalley7777]

R.H. ............slow down we need you for winter , BAD MAN !!!!!!!!!!!

[@richardholdener1727]

I'LL BE HERE

[@sean5comet]

@@richardholdener1727 your videos helped me pick out the parts needed for my 6.0/6.7 LQ4. Sent the 317 heads to TEA for the stage 2 porting, got the FAST LSX RT intake with 90mm Z06 throttle body, tick performance cam 214 int 0.571 lift, 224 ex 0.561 lift, 114 +4 LSA, harland sharp 1.7 roller rockers, comp cams roller lifters...and the spurt of the moment move when I brought the short block to the machine shop...ended up ditching the stock internals entirely and going with a Scat 408 stroker with 10.5-11.0 to 1 compression. Should be done in 8 weeks. I'm thinking 500-550 flywheel hp. What do you think it might have power wise?

[@matthewstillings5134]

@@richardholdener1727 will you please give me some more information about the 4.3 I am a huge fan and this is one of my favorite Chanel's next to high performance academy and project farm and speaking of project farm will you please compare the difference between gas and propane also different types of fuels? Please. I would love to hear back from you soon

[@thegdfp6447]

@@richardholdener1727 There are a lot of Bowtie 18 degree heads out there. Splayed valve eve, if going wild. www.ebay.com/itm/Chevy-4-3-V6-Bow-tie-Aluminum-Cylinder-Heads-Pair-1X137747-ported-race-drag-st/303733686034?hash=item46b7f03f12:g:V94AAOSwbuFfdg3Z

[@pancudowny]

Seeing that black powder-coated Holley made me think of the 2-bbl Rich has been running on his 292 I-6 build, and it got me thinking: The Chrysler 383- & 400-ci V-8s both came standard with the Holley 2300 500-cfm 2-bbl, so what's wrong with using one [with an adapter] atop a Chevy 4.3L V-6 on a dual-plane square-bore manifold? Yes, I know they came with 4-bbl spread-bore carbs... but if I'm building an efficient, low-revving workhorse, I figure the vacuum signal I'd have with a 500-cfm 2-bbl would be far-better than what any 4-bbl could provide at WOT. Plus: No secondary tuning issues to worry about! ;)

[@shaneshane1379]

The LS 4.3 v6 is a total beast with a little boost.

[@kennyallison7201]

Very interested to see what this does when u get it right, Richard Holdener style! Lol

[@ardelljenks6579]

I would like to see you do a GMC 351 V6 from the 60s. The 351 could then be compared to the Chevy 350 V8. Some of the cool things about the GMC V6s Are that they have sodium filled exhaust valves, actively oiled camshaft lobe’s, massive blocks and low compression ratio. They should be able to take quite the boost pressure. But my personal reason for wanting these tested is that I have two 702 cubic inch GMC V12s that have several components in common with the 351. But of course there are virtually no aftermarket parts you would have to have the stock Cam reground and make new intake and exhaust manifolds. Making a new intake manifold looks very simple though.

[@nathanmcbride1462]

You know... you could donate an engine to him. Lol. I love the 702. I’ve been looking at one sitting at an old tractor shop. Is like to put into an old Cadillac or similar. With boost.

[@ardelljenks6579]

My plan is to make the automotive version of a P 38 fighter plane from World War II. A huge V 12 on each side, a little one man cockpit in between. the 12s will be turbo charge just as the P 38 with 2 water cooled intercoolers mounted inside 2 V6-92 Detroit blower housing in the valleys of each of the V 12s.

[@mohamhead9701]

Can't wait to see a bunch of hot Astro vans prowling the streets

[@jsomething2]

check Japan. they love to import the astro van. there's a whole scene

[@borisinpanzers9283]

I have a 80s 4.3 I'm trying to restore came out of a van. I got a 4 barrel carbureted intake for it and a holley 600cfm. I have no idea whats gonna happen with it but I really want to put two turbos onto it too. I'm not sure how that'll work with the carbureted setup, I'm really new to a lot of the concepts I'm facing like the fuel system, boost, how your air system will work and won't work in it.

[@braceyrice5413]

Awesome videos.....how about a singe or twin turbo junkyard 305!

[@RKH2OS]

I would love to see the LV3 tested. What about it?

[@daleanderson7629]

is the valve train instability on the second test caused by boost (dynamic cylinder and manifold pressure on valves). If everything else was the same (cam, valve train weight, spring pressure, oil pressure /did you loose some to feed the turbo collapsing the lifters a little) do you normally have to add spring pressure with boost.

[@williamgregory6684]

I would like to see more videos with superchargers and small displacement V6 or straight 6( 292.chevy,300 ford)

[@richvandervoort2950]

The cast iron even fire crank is the weak point on these engines. An odd fire crank is stronger, but probably not the best choice for the street. It looks like the pre vortec intake was used. Edelbrock did make a vortec specific 4bbl intake. The ports in the vortec heads are significantly bigger than the earlier heads, so I suspect the correct intake is also larger than the one you used. Also GM performance made the high rise "Pontiac" Intake ,10093314 and a cross ram also. The cross ram is for raised runner heads.

[@scottc0510]

I have a TBI Vortec 4.3 in my garage that I planned to put in a Jeep YJ a few years ago. The previous owner pulled it from his 1500 pickup to install a 6.0 for towing purposes. I don't know much about 4.3's though, and so I'd appreciate any info that would help me determine exactly what I have, especially the year it was made. I've since sold my Jeep, so I don't need the engine now, but I'm considering keeping it for a future project.

[@kylanlarsen6752]

Would you consider doing a video on the 4.3l ecotech? So few people have played with it but it has insane potential!

[@nealstahl2269]

Love the video love the 4.3 cant wait to see the revisit planning on turboing my 4.3 s10

[@willspooner3071]

@Neal Stahl i remote turbo'd mine and the tinkering has been a hella lotta fun so far! what is you set-up?

[@escuelaviejafarms]

What I'm going with in my truck is a tall deck 427 with some Brodix Dragonslayer 320 heads, and a Comp Cams 268H, the one with over .5 lift. I know everyone will say I don't have enough cam, but that's the way I built it. If I want to make a little more power, all I have to do is a cam change. If I want to make a lot more power, I'll just add a cam and Blower, because you can't beat a BBBC 🤘😁🤘!

[@thereluctantgearhead4544]

Bigblock chevys like a lot of lift on the cam.

[@thereluctantgearhead4544]

My 496 has a 775/748 lift, 280/288@.050 solid roller. I drive it on the street sometimes. It runs extremely well.

[@escuelaviejafarms]

@@thereluctantgearhead4544 I'm going to be using the truck to tow a camper to and from shows and camping, I shouldn't need much more than I'm putting out unless I want to have gallons per mile while I'm towing, LOL! I'm building it for longevity.

[@thereluctantgearhead4544]

@@escuelaviejafarms well in that case, you should have used a pair of oval port heads. Them Brodix heads are kinda large for a torque engine. Room to grow tho.

[@randynorris6745]

True V-6 power and devotion….. bring back the Buick Intercooled Turbos!!!! That’s the ONLY reason… that the Corvette ZR1… ever came into existence….. was because of the Buick V-6’s!!! Back then… Corvette swore… to never again be beat by a “Gentleman’s” car….. the under appreciated…. Buick. Grand National!!

[@steest2010]

I am so excited for this! After this, LV3 please!

[@richardholdener1727]

no DI stuff

[@steest2010]

@@richardholdener1727 these converted one to port injection: engineswapdepot.com/?p=45830

[@bert5003]

weird pitch but can we see some of these run with propane mixers? the 110 octane rating and natural evaporative cooling seems promising.

[@cartailincautodetailing946]

Need to do that 4.3 with those brodix heads

[@cathygambill1554]

The Brodix intake will only work with the head that it was design for. 23Degree or 18 degree intake port location is quiet a bit higher. When you go to that combo your gonna need some exotic valve train parts only made for those heads are required. I have built both the 12 degree and 18 degree versions and went with the odd fire crankshaft on the 18 degree version. As this becomes the limit in making power since split journal is limited to the 500 hp mark not to mention the rods. The next obstacle on the !8 degree would be finding a distributor ,as MSD no longer produces one. So even if your running a Carb you can get programable ignition and make a crank trigger. My 18 degree version is in progress now . As cam cores are not available for the firing order, I have found old busch series naturally aspirated cams. And that RPM range is way up there. So no streetable idle and also limits the power adders to small shots of nitrous even tho my intention was to build a multi-stage system with a 400 shot. oh well NA and A150 shot is the way I have to go and see what happens. Oh also the 18degree is 305.081 CID.

[@ohhthepatpat]

Also thanks Richard great video wish it had more spring and cam! 😁

[@joshlepley3725]

Yeah thats what he said lol

[@LimitedGunnerGM]

What In-line 6 cyl (besides a 2JZ) would make a strong stroker? Smooth torque and lower RPM. I ask because I’m used to driving a manual transmission and prefer the RPM range of Diesel engines. But without the hassle of diesel.

[@-Atrocious]

Most any straight 6 makes good torque. I used to just stuff as big of piston in them as possible and try to get the best flowing head at low rpm avail with big valves and small runners. And would typically make a mule out of any of them. A straight engine naturally balances itself out so I just tryed to make a square bores out of them if poss. Meaning same size bore and stroke assuming rod ratio is decent. That will make make diesel pulling torque usually. 😉

[@boomsticksmith5136]

I would love to see LU3 4.3L V6 boosted...

[@ToprankImporters]

We have Syclone and Typhoon from 1992. As far as engines go, the Buick 3.8 is a much better engine, and setup than the 4.3 that came in the trucks. The 4.3 in that application made insane torque, but as you saw no revs, not a great head.

[@geoffmooregm]

But the 3.8L had a weak oiling system which was later solved in the 3800. The 4.3L got good heads with the 96+ Vortec engine. Not sure what had the better heads in final form. Was it the Vortec head or the Series III head? Either way neither late model head adapts easily to early engines and their respective blocks and manifolds but there is potential for these compact engines. I honestly like seeing anything obscure being modified and run even if it doesn't lay down huge numbers

[@redlinepullers3277]

I love the old 4.3v6 I now run a 2014 nisan frontier with the vq40de and would love to how far u can push the stock engine

[@-Atrocious]

I hate building and working on the vq and vg engines. Pita

[@davids7605]

Would be interesting to see a few combinations on the GM 3.6 liter LLT v6. Like heads, cams, intake and of course BOOSTED.

[@phoenixgaming454]

That would be nasty🤤

[@minimanadam]

Vortec 4.3 turbos are sick. I seen one built in an s10 xtreme and it was a sweet sweet ride

[@chuckyz2]

More Vortech 4,3 stuff please. Big Bang one.

[@inspector13jjf]

I'm a big fan of the 4.3L. Wasn't before I got my Typhoon though. Had good results doing a mild build on my 4.3L.

[@willspooner3071]

@Insp3ctor13 care to divulge some info on your mild build? any do/don't pointers? was it a combo that was DD capable? i'm in the process of turning a 1993 sonoma OE 4.3 into a sleeper that i can wake up with my right foot and still be a resonable DD. my dad teases me about rolling around in my 'damn junk truck' but he doesn't appreciate my 'poor mans syclone inspired reboot'. so far... swapped the CAT out to use the stock mount/-Ypipe to remote mount a GT-3582, Explorer 8.8 w/ 3.73 LSD/disc brakes (narrowed to accommodate short axles x2, homebuilt triangulated 3-link, homebuilt coil-overs based on a pair of Monroe Sensa-trac shocks, s-10 blazer tank swap to the rear, repurposed stock tank mount for remote battery relocation (and pneumatic tilt bed to make service easier... with on-board compresssor/tank). just for grins i'm currently blowing thru the OE TBI... it's literally just kinda sitting on the air cleaner flange of the TBI and leaks like the lab in wuhan (on purpose atm)... so it's good to about 3/4 throttle then the ECM says 'nope' til your right foot takes the boost away. i've got a edelbrock performer and a killer race prepped 390cfm 4150 that's going on VERY soon =)

[@inspector13jjf]

@@willspooner3071 a local shop built mine so I'm not sure about do's & don'ts & it would be reasonably DD friendly in my opinion (I may or may not be a little more lenient on my definition of DD friendly than most however) but it's in my Typhoon which isn't a DD vehicle. Currently I'm running a stock block bored .030 with splayed main caps, stock crank, Eagle H-beam rods & forged Mahle pistons, final compression is 8.7:1, a custom ground Comp Cams camshaft (.513/.513 lift on a 115 LSA), Vortec cylinder heads with a mild port/polish & stainless steel 1.94 intake & 1.60 exhaust valves & LS1 valve springs, Edelbrock 2114 intake manifold modified for fuel injection, Holley 120# injectors, a custom made elbow to mate up to the factory throttle body, SPA turbo manifolds & a Walbro 470lph E85 compatible fuel pump. I am running the stock turbo on 14.7psi currently. When I had the engine dyno'd it was running naturally aspirated on 91 octane with an untuned 850cfm carb & factory N/A manifolds & Y-pipe & made 276hp & 306lb-ft of torque.

[@mikef-gi2dg]

BDS makes a 4-71 kit for the 4.3 v6. If you wanted a lower profile blower a weiand 144 adapted to the BDS intake could be wild, and under the hood. How about a BDS 4-71 test.

[@MrJimbobdudeguy]

Hey there jus watching thru the end of the video and if you can wiggle another test of the old 4.3 maybe with a stock cam and try the 1.6 ratio rockers in place of adding camshaft. How does more rocker affect power curves in stock trim engines? I have a very stock engine both in my current truck and on a stand in the backyard and preparing for turbo application i plan to file the rings for more gap, self port the intake and heads, have ebay cheapo headers that need a little bashing in to clear spark plugs but all in all your info and numbers have me thinking i am going a lil far for my needs as i dont think i want to run more than 8 psi until exta funds for v8 swap come available. The motor was cheap to buy itself and instead of a cam i am thinking keep the power curves it does make for more low end torque 2800 and if larger rockers give a lil extra umph then that plus boost = happy truck engine numbers!! If ya were closer to AZ id volunteer a dyno mule or motor to see what they do!! Happy friday to ya and keep the horsepower screaming!!