HOW CAN I MAKE MORE POWER FROM MY SBC 350? BOLT ONS VS BOOST-WHICH ONE MAKES MORE POWER? TRY BOTH!

HOW MUCH POWER IS A VORTECH SUPERCHARGER WORTH ON MY SBC? HOW MUCH POWER CAN I MAKE WITH AFR 195 ELIMINATOR HEADS? HOW MUCH POWER DOES THE STOCK 190-HP SBC CRATE MOTOR REALLY MAKE? WHAT HAPPENS IF YOU UPGRADE THE HEADS, CAM AND INTAKE ON A SBC 350? WHAT HAPPENS IF YOU RUN BOOST ON A SBC 350? HOW MUCH BOOST CAN I RUN ON A SMALL BLOCK CHEVY 350? WHICH ONE ADDS MORE POWER, BOLT ONS OR BOOST? CAN I RUN BOTH BOLT ON AND BOOST ON MY SMALL BLOCK CHEVY 350? CHECK OUT THIS VIDEO WHERE I RAN A GM 190-HP CRATE MOTOR IN STOCK TRIM, THEN WITH A VORTECH SUPERCHARGER, THEN WITH DIFFERENT HEADS, CAM AND INTAKE, THEN AGAIN WITH A VORTECH SUPERCHARGER ON THE MODIFIED MOTOR.

[@robertwest3093]

Just the supercharger made about the same hp as all the bolt ons, but 500 rpm earlier. If you're gonna do both then heck yeah that is obviously the ticket! I'd love to get back into this hobby but the price on everything is ridiculous these days.

[@graeme500]

Great video Richard. I always get something out of them!

[@mikef-gi2dg]

I have that exact 4 bolt gm crate engine. I added a Performer cam and intake and 600 holley. For a mild 350 it runs smooth as glass, I drive it to the track and foot brake it, and It runs the highway quite well. This video is my next step, some mild boost should do the trick. I say mild cause I want it to last for a while, and I like pump gas usage. I could push it to the max, but broke don't do me any good. LS is great stuff, but GEN1 forever! GREAT VIDEO.

[@glengabruch4664]

That motor with bolt ons and boost would be perfect in a '68 to '72 Nova. 👌

[@Wrenchen-with-Darren]

I still build and love the old SBC!!!

[@FastFoxx82]

Awesome test, makes me think a totally stock 350 cam heads etc combined with a 1.6 intake rocker a decent forged piston and maybe 12-15 psi and an intercooler would have beem damn close to 500 hp

[@edwardwood3622]

Great test again!! Would loved to have seen the stock engine get a 30/30 cam.

[@anthonyrowland9072]

@@BuzzLOLOL these need like an xtreme energy 250.

[@danecooper1914]

I respect the old small block but this makes me appreciate the LS based stuff even more. That old small block is still something to be reckoned with when built a little.

[@KingJT80]

to me 800HP is 800 HP i agree the LS stuff is more advanced but give me a procharged 383 any day in a old school gen 1 with good breathing and ill take it every time over the LS if i want an LS ill buy an LS based car. C5s are fairly inexpensive....

[@tenorhowlermonkey3454]

Impressive engine from start to finish

[@stevenminix]

Great video

[@rotaxtwin]

I was strangely relieved to see that the 190 horse small block managed 260 on the dyno.

[@evilinside5984]

Not with a stock type induction setup. This engine does about 210Hp @ 4,000 Rpm, with stock exhaust manifolds, full exhaust, and Tbi intake setup.

[@shawnsanders9450]

It would in fact do 190-200 on the chassis dyno.

[@manitobabois4593]

@@shawnsanders9450yea buts it’s rated 190 at the crank

[@shawnsanders9450]

@@manitobabois4593 i should have clarified. With a few bolt ons it would probably do 190-200.

[@fiend_metal]

I love seeing this kindle of content. I am looking to add some more performance to the stock 178k 5.7 tbi, in my full size 93 blazer that I tow my racecar with. Already did a 4l80e conversion, the only gripe I have is low power and no AC yet...

[@ryansorkness7396]

So do i. Have 93 suburban. Replaced 350 with stroker 383 with vortec heads and biggest cam i could run with the factory computer. Wish i would have went witha blueprint engine, but only had so much money. My mid range picked up a decent amount, but still isn't a tire fryer

[@fiend_metal]

@ryansorkness7396 Yeah, I have thought about rebuilding it to a 383, or maybe swapping to a 454. But I really just want to build it with a roots style blower/supercharger and run it for a while. It's my current baby tow rig, but I am building it into one of my dream builds.

[@evilinside5984]

@ryansorkness7396. Just add a 3,500 stall speed, lockup Tq. converter, it will fry some tires then! Best of both worlds with a lockup Tq. converter, has the added launch Rpm to keep it in the powerband, then locks up the converter like stock while in Over Drive=Awesome!

[@russelljackson7034]

Right on

[@drbendaroo9610]

406 SBC here. It's the squirrels!

[@JimBronson]

You can make a lot more power with a 406 than a 355, more than just the difference in CI would suggest. But the 400 blocks are getting more rare, they haven't been made since 1980.

[@mikeeaton9822]

Best compression ratio for big boost, well at least old school.

[@jasoncunningham7576]

Should have made 475 stock with cam and blower

[@billnu]

Why do I want a GM crate motor now? I love seeing how the different combos affect the output. Great stuff as usual Richard.

[@dsm4959]

I’ve owned several LS and LT Engines over the years and my friends have a few now as well. I already have my Camshaft in my Boosted Engine, But from the posts online I know many would be interested in seeing a 6.4L Hemi Camshaft test between the Comp XFI 270 Cam vs Cammotion Titan 1 vs both the Comp HRT Stage 2 Camshafts. Both NA and Boosted. I know many would be interested in seeing this comparison. These Cams seem to be the most popular for the 6.4L Hemi Engine. Thanks Much

[@bjfrazier4895]

Will you donate him a 6.4 hemi? I would bet if you did, he would do all of those test, and then boost it! 😂

[@dsm4959]

I’m sure Richard has the Pull to get a 6.4L Hemi and all the additional upgraded parts for the engine. I would also like to see a comparison between an LS/LT 6.2L vs 6.4L Hemi. Most GM 6.2L respond much better to a Camshaft upgrade vs a 6.4 Hemi

[@markwegner6100]

Only thing left is to stroke it!

[@bradleymorris8875]

I think it needs a Big Shit plate system as an intercooler … with a mild 300 shot to get this project sorted out properly.

[@johnmillican3182]

Richard, what kind of fuel were you using on the final iteration? Race gas or e85? Thanks for the great video!

[@richardholdener1727]

PUMP 91 WITH OCTANE BOOSTER

[@charlieweaver6264]

Didn't know if you could explain how to control ignition timing under boost with an hei distributor. I know I could go buy an msd box but I really just want to use the stock hei distributor

[@richardholdener1727]

the only way would be to use an EFI and lock the HEI or use boost retard MSD or other if Carb

[@ChillFactorProducts007]

Just happen to have a prochager sitting i need to bolt it on something

[@stalegiverhaug2905]

Have you made a comparasion between Vortec heads reworked for higher lift and low cost aluminum heads? I would assume the low cost aluminum heads wil be a typical next step then?

[@richardholdener1727]

I HAVE NOT

[@Hothead_Lou]

Awesome test. Any valve control issues? What spring pressures? Very educational. Thanks Richard!

[@richardholdener1727]

WE CHANGED SPRINGS WITH THE CAM

[@daviddavids3468]

@@richardholdener1727 LOOKING AT POWER DROP OFF WITH RPM WAS THAT THE HEAVY HYDRAULIC ROLLER LIFTERS CAUSING VALVE FLOAT ? HORSEPOWER SEEMS DOWN ABOUT 40 HP

[@anthonyrowland9072]

did GM discontinue these? the few i've seen were almost $4000?

[@jasonbirch1182]

I would have loved to see the blower and a decent cam with the smogger heads. I have a 400 sbc rv reman with as big an erson cam(with the recommended springs)as would fit without cutting the guides. I want to say its like .486 or something, put it together years ago. I guess it will turn a mid-high 13( in an 85 Monte ss with GN 8.5 3.42) It runs with 4th gen camaros on the street. Ive thought about a turbo or an eaton m112 maybe. Just curious on what the heads are capable of with boost.

[@richardholdener1727]

less NA then less with boost than the good heads

[@jasonbirch1182]

@@richardholdener1727 yup. Just curious if it would cause any distress and what they are capable of.

[@robertpursley4907]

What kind of number would one expect with a 400 sbc and the boosted only setup with a TPI?

[@xmo552]

😊

[@NitroTheDingo]

Hey, I have an 350 L98 engine I want to add boost too. How much power can that engine reliably handle on a stock bottom end? I want to daily drive this thing.

[@richardholdener1727]

see the l98 turbo video

[@jasoncunningham7576]

I wish you would have added a cam to that stock motor so we could see the benefits of it because I think you could make a lot more power without an expensive set of cylinder heads so sometime try not to just take all the dinal information and conjure up a story actually do the Dino test so we can see the results I'm pretty sure the cylinder heads were unnecessarily with the right camshaft

[@richardholdener1727]

How else am I suppose to do a dyno results story if I don't use my dyno results?

[@aaronburt1103]

I'm surprised you had no detonation with that boost and static compression ratio with no intercooler. Personally I would buy the long block and supercharge it. That way if you blow it up you get another one and slap the supercharger on it and you're not out a nice set of heads and cam.

[@user-nd6og8si9p]

I would like to know what fuel octane was run in all the combinations myself. I'm assuming 93.

[@richardholdener1727]

cali only has 91-plus octane booster on the 600-hp combo

[@aaronburt1103]

@@richardholdener1727 that is impressive. Wish they would sell a 98 octane for us boosty boys that don't want ethanol.

[@KingJT80]

blow through carbs are a different animal than EFI. the carb actually cools the fuel under that pressure and when you have a vortech that box helps a lot CSU carb + a centifigal is a winner on the street saw a guy at the local car show pull up in a 79 malibu with a blow through procharger small block and a CSU carb

[@natelorimer8567]

In figured the stock 350 was more decent with headers and intake over 195 hp. Not a rock star. But much better

[@mikef-gi2dg]

Add a 600 carb and intake and headers with decent exhaust, and it's 260 just like gm says. In a daily drives, it runs good street and highway, on 87. Basic fun.

[@Oleblueburban]

Richard, I’d love your opinion on adding a torqstorm very mild boost 5-6psi to a blueprint vortec 350 engine? Engine specs BP3503CT1 (Mild Vortec Engine) Dyno: 405HP | 412TQ Cast steel crankshaft 3.480" Stroke OEM type 5.700" connecting rods Hypereutectic pistons Internal Front/ External Rear Vortec cast iron heads 64cc chamber Hardened retainers and springs 1.94 intake valves 1.50 exhaust valves Cam Type: Roller .495/.502 lift 221/226 duration @ .050, 110 degrees LSA 1.52 comp roller tip rockers

[@richardholdener1727]

works well

[@zigandarov]

Wow wow wow wow wow 👍👍👍 v8

[@RENEGADEX800]

Boost solves all the problems

[@Ratridez]

Not seeing many 350 blocks up here in Alberta anymore , getting used up and many people are on the Ls bandwagon .

[@richardholdener1727]

cool

[@kalui96]

#motor

[@utahcountypicazospage5412]

So the 190hp was probably wheel power stock.460hp wheel boost and head and cam not bad

[@evilinside5984]

No, this engine, with stock exhaust manifolds, stock exhaust, and the stock Tbi intake setup, does about 210Hp @ 4,000Rpm.

[@richardholdener1727]

the 190-hp rating was flywheel

[@robertwest3093]

Why are they rated at 190? Is that with exhaust manifolds and a 2 barrel?

[@user-rk7cw2bf9u]

Probably like how OEM rates HP with all the drive accessories etc

[@evilinside5984]

Yes, the 190Hp rating is with the stock Tbi intake setup, stock exhaust manifolds, stock exhaust system, and full accessories driven.

[@robertwest3093]

@@BuzzLOLOL You mean L46 cam? I know it's hard to keep all of Chevrolet's specs from the '70s straight.

[@robertwest3093]

@@BuzzLOLOL I'm rather surprised that Chevrolet put that hot of a cam in a 350 during the terrible era of the smog years.

[@kellyheath8547]

Cheap bolt ons first. Then boost if not class restricted. Add more things as power demands.

[@kellyheath8547]

@@BuzzLOLOL go ahead and look and see who was the writer of those articles.

[@mikeeiben3430]

Which would be more fuel efficient and effective in a towing application, boost or bolt ons?

[@JimBronson]

If it's an older truck, you'd gain efficiency and power moving to a set of heads with modern combustion chamber design.

[@bjfrazier4895]

Boost fixes everything______NX is icing on the cake though.

[@evilinside5984]

For towing, you want immediate, tip in throttle responce= Roots/twin screw, whipple super charger, just add ring gap, to account for boost, over about 8psi.

[@richardholdener1727]

that would be one big cam that takes power away at 4000 rpm compared to this stock cam

[@ericdebisz9458]

Those cast pistons were happy??

[@richardholdener1727]

yes at this low boost level

[@natelorimer8567]

@richardholdener1727 I been amazed at the abuse stock pistons can take. But of course I watched boost and timing . I have also painfully found limits.😂

[@mikef-gi2dg]

It's the same piston used on the 290 hp 330 hp ho engines. It's hyper piston.

[@Apachefog]

That modified NA engine seems way low on power with those heads and cam. You never mentioned what the modded NA made and I was expecting you to compare the stock boosted engine to the molded NA.

[@richardholdener1727]

The modded NA numbers were given in the video

[@Apachefog]

@@richardholdener1727 I missed when you stated the numbers, my mistake. Still seems at least 50hp low.

[@evilinside5984]

@@Apachefog Its a mild cam, with a dual plane intake, not a race engine setup. Add a big solid roller cam, a super victor intake, a 2 inch super sucker carb spacer, Xp 1,000cfm carb., and 1-7/8" Long tube headers, and prob. make a 100+ more Hp!? But also would cost another almost 4k!

[@richardholdener1727]

it's not 50-hp low

[@SuperCookieGaming_]

does chevy still sell the 190hp 350?

[@richardholdener1727]

I have not seen it for a while

[@mikef-gi2dg]

@@richardholdener1727 It's been gone for about 3 years now. I bought mine at summit in 18 for $1650. I should have bought three. I am still kicking my self.

[@ICONBADGTA]

That NA with those heads and cam seem low.. I mean a GM Fastburn head with LT4 Hotcam 218-228 split @.050 makes 430HP/430TQ... Something doesn't add up 'NA" with the best heads money can buy in those AFR Comp 195 heads and a cam with a (LOT) more duration and lift being down 20HP from a cam 12-13* less duration and .030-.040 less lift wise.!!.... That thing should have made 450HP/TQ all day long N/A with that XFI cam and AFR comp 195's, unless the compression was 8:1 which is a big issue on those factory engines... You sure the factory iron heads were 76cc? And not 65cc as most are? Cause it's just not adding up Richard.. Something was a "MISS" there.... NA wise.

[@jayriskit8038]

What kind a power would a ls 383 with a ls 7 cam make?

[@richardholdener1727]

what heads and intake?

[@jayriskit8038]

A LSA intake with 823 heads. A ls 5.3 383

[@richardholdener1727]

how will you run 823 heads on the 3.900 bore?

[@jayriskit8038]

Use any good flooring head

[@marcustrue1213]

Would you ever help a guy with either their engine or figure out how to build a tow mule for under $2000?

[@marcustrue1213]

350 5.3 and 454 something in those displacements maybe 502?

[@richardholdener1727]

ASK AWAY-OR BETTER YET JOIN THE LIVE FEED FOR Q&A SESSION

[@daviddavids3468]

HOW DID YOU ONLY MAKE 413 HORSEPOWER, WITH A 10 TO 1 350, WITH AFR 195 HEADS AND A , 576 LIFT ROLLER CAM ? I'M GUESSING IF YOU WOULD HAVE HAD BETTER SPRINGS AND ACTUALLY REVVED IT TO 6500 RPM HORSEPOWER WOULD HAVE BEEN OVER 450

[@rapidride2]

Thought this was the 260hp engine?

[@richardholdener1727]

this was the 190 hp version

[@pete1003]

I know how you feeling get more power out of your small block Chevy, build the Ford 351!

[@user-mm1se7gy7e]

Lol . . . . . Why ? 😅

[@sebbonxxsebbon6824]

I rather add CUBES, build a 383!

[@baby-sharkgto4902]

Personally I blame John Woodworth

[@joe-hp4nk]

Duh, you're getting long in the tooth.

[@Kstang09]

Better than short teeth, amiright?!

[@studbolt5627]

👍👍

[@Harrybowles1969]

Man you do a video at just the perfect time, every time. Iv just been wondering just this for my 350. Thank you richard 🙏🤍

[@Harrybowles1969]

@@BuzzLOLOL I have the 9-1 compression 255hp 350 from 1969. It has edelbrock intake, 4 bbl, headers but I think cam and truck heads are holding me back. The thing doesn't rev past 5k!

[@Harrybowles1969]

@@BuzzLOLOL thanks I'm going to have a look now see what I can see. I'm in UK so sometimes I got to be patient with what's available. Thanks for your help I'm Gona need it 👍🍻