Holy $#!+ Watch this factory iron head Pontiac 455 rev !!!!

1971 Pontiac 455 with 1970 #64 casting 455 HO heads, a 4.21 stroke factory crank, Eagle Forged H Beam connecting rods, 4.185 JE SRP forged pistons, Total Seal molly file fit rings, Powerbond SFI steel balancer, Comp Cams 236, 242 @ .050 on a 110 LSA, Harland Sharp 1.5 roller rockers, our Street/Strip porting, ported Edelbrock Performer RPM intake and believe it or not Factory Q Jet carb. #new #viral #pontiac #education #dragweek #how #automobile #beast #build #engine

[@Jeff-io2zn]

Throttle response is always a lot better when theres nothing bolted to the flywheel. Sounds great though.

[@DouglasPendleton-o7r]

Right😂

[@tomcherry7029]

It doesn't have a flywheel on it look again.

[@danonoveh8114]

Took the words right out of my mouth 😂

[@Von_Len]

Exactly

[@ryanlang4327]

@@tomcherry7029umm that big gold spinny thingy is a fly wheel my friend 2:38

[@rammy630]

Well it is going to rev a little quicker because your just running a auto drive plate without the weight of the converter. Any way very Nice .I have built may of these as well. They are a beast.

[@breakawaymotorsports]

Flowmaster s for me. Their single chamber ones (American Thunder series) sound just right. Cool old Pontiac!

[@dcimotorsports1111]

Thanks for the KUDOS

[@southtexashustler]

Man, this right here proved what my dad was telling me about this engines potential he had in his 1969 Pontiac Lemans…👍🏾

[@dcimotorsports1111]

Sounds like Pops was a smart man :) Thanks for following !!! Make sure and check out our bench racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@southtexashustler]

@@dcimotorsports1111, yeah, my dad brought a few add on’s from Super Shops back in the day… I just want to recreate a little 68 or 69 Lemans like he had with a little street engine in it to cruise to car shows… But, when I saw a video of your shop and performance and quality work, I was sold on where I’m going to get an engine from…👍🏾

[@dcimotorsports1111]

Thank U Sir !!! @@southtexashustler

[@BobbyOfEarth]

Great sound either way. Love the lope of the cam... reminds me of my 69 400 RAIII engine that I snatched from a 69 Judge, had rebuilt and then put into my 68 Firebird, in 1976. The car had a 278 gear, but still turned 12.80 @ 123 mph at Fremont/Baylands raceway.

[@BobbyOfEarth]

@hopebrowning6300 Buick, Olds and Pontiac's torque were the reasons why Chevrolet's Mkt. Dept lied about their hp to sell more cars.

[@markusgarvey]

It has a flexplate and no torque converter, or flywheel. Of course it will rev quick.

[@apachebill]

Mine does it…. In the car. 😊

[@dcimotorsports1111]

Watch my video I just posted of the 1st to 2nd test hit in a 68 Firebird we just finished up. Hits the rev limiter immediately in 1st and 2nd gear. Its all in the cylinder heads.

[@468delray]

right...lol

[@oldschooltwist18]

@@dcimotorsports1111 I saw the video of one you did last year and it's reve was unbelievable. People say how fast mine revs but that thing was like a two stroke w really small sprockets

[@dcimotorsports1111]

HA HA Thanks@@oldschooltwist18

[@endrekasko9528]

I had a quadrajet done by a guy in California for my 396 Worked out was flowing 950 cfm & that motor took it all.... Beast 🤘👿🤘

[@dcimotorsports1111]

I love the Q Jets, just wish they had bigger fuel bowls.

[@shanew.williams]

An old, experienced exhaust specialist told me years ago that a Pontiac V8 & a big block Mopar are the 2 hardest engines to quiet the exhaust sound. (I was there getting mufflers on a Dodge 440 & i must say i had to agree with him.)

[@dcimotorsports1111]

I agree, but the exhaust note is cool to listen to :)

[@TerenceBobay]

I always run Cherry Bombs on all my old Pontiacs,GTO & 2+2, Love that sound!

[@dcimotorsports1111]

I had a 68 Firebird I ran Cherry bombs on, but it pissed my neighbors off to much so I switched back to a Hush Thrush turbo muffler.

[@davepriddy9263]

Dang, that engine sounds great!

[@dcimotorsports1111]

Thank U Dave :)

[@sporty196071]

Nice setup, I may setup my next 455 like that

[@dcimotorsports1111]

This is a nice combo and runs really well. Keep in mind the cylinder heads have a big role in an engines performance.

[@4by_yotaguy373]

Good video! The Dynomaxs have that classic pop. I've had Purple Hornies and Cherry Bomb glasspacks on a few vehicles I've owned, but I've always been more of a chambered muffler Flowmaster guy 👍

[@dcimotorsports1111]

Thank You for the KUDOS !!! I like the deep tone of a good turbo muffler. I did like the Flowmasters when they first came out, but as I have gotten older I'm reverting back to the turbo :) Check out my Podcast every Wednesday night from 7PM to 8PM Eastern. Its just a casual place to hang out and bench race :)

[@PauletteMilo]

flow master

[@terryenyart5838]

I like Dynomax mufflers best. I've grown tired of flowmaster. Sounds mean all ways, but love the dynomax sound. Great street engine.

[@dcimotorsports1111]

Agree 100%

[@outlawamps96]

Love Poncho’s! Love the Dynomax’s too

[@michianabaddriversin4690]

I like the Dynomax sound

[@boydbaxter]

Yep that’s I remembered about them old Pontiacs. Distributor in the rear up against the firewall. Made it a little difficult to tune up.

[@dcimotorsports1111]

It depends on the car they are in. Its not terrible for most of them. Its a whole lot easier if they have electronic ignition too :) Thanks for following !!!

[@TheOneAboveAll-001]

Flow Master

[@stevenbean9706]

quadrajets work amazing when you rework them i used to get a lot from mondello performance they had a throttle shaft bushing kit that kept the carb from pulling air and howling that with a few other small improvements and it was an awesome carb

[@dcimotorsports1111]

Yes they are !!! Not many put 2 and 2 together with the name of my company, but the DCI in my company stands for Don's Carburetor INC. I changed the name of my company in 1995 when I bought my partner out. So I have a very good understanding of the Rochester Quadrajet and actually wrote a hop up manual on them. I still have the master copy somewhere around here :)

[@stevenbean9706]

@@dcimotorsports1111 I rescued quite a few of them from dumpsters do you guys have an online store that sells stuff for them ? Im building a mopar 383 i plan on keeping a few quadrajets on the side for different situations.

[@kalybnielsen4183]

​@@dcimotorsports1111And what's the name of it? I don't need one, but I'd like another one, for some reason I enjoy the QuadraJet manuals, have every GM one available from the early 70's to the early 90's, I have a Gherraty one, he focused on RV economy and power, it's good reading. The people that criticize or trash on QuadraJet's either don't understand them or have never experienced a great running one

[@dcimotorsports1111]

I will dig out my master and post a short on it and reprint some for sale. Stay Tuned :) @@kalybnielsen4183

[@fathertime7923]

The 750 quadrajet was one of my favorites, albeit hard to come by. I'll take the dyno-max muffs any day, since I do more than idle.

[@patrickwendling6759]

Thank you for your knowledge and video's USA 🇺🇸

[@dcimotorsports1111]

Thank You for the KUDOS and following our channel !!! Make me happy people are enjoying my content and learning too :)

[@GeneGainwell]

I had a 455 Pontiac engine in a 69 Catalina it was awesome

[@dcimotorsports1111]

Nothing like the big TQ of a Pontiac 455 :)

[@dcimotorsports1111]

Please subscribe and hit the notification bell for future videos. Come hang out with us every Wednesday night on our Bench Racing Podcast from 7PM to 8PM Eatsern.

[@junechris]

I like the sound of the hooker aero chamber mufflers, had em on my built engine. Idled similar to this one

[@dcimotorsports1111]

I have never ran a set of those. I'm a Dynomax or Magnaflow guy. Used to be a Flowmaster guy when I was younger LOL. Thanks for following !! Check out our Podcast every Wednesday night from 7PM to 8PM Eastern.

[@Bryan-Hensley]

I took one of those and bored it .108, put AMC 390 12:1 piston which had the perfect piston pin position to use Chevy .400 over length rods which had a smaller rod journal than the 455. Offset ground the crank by .030 stroking the engine to .060. Came out to I think 502 ci with 14:1 compression with the small chamber heads. It was in the 1980s when I did it.

[@dcimotorsports1111]

Cool, I like cross breading to get something unique :)

[@kennydaiker1980]

I'm a die hard Flowmaster guy,awesome mufflers

[@tonymickens8803]

An Old School work of Art!

[@dcimotorsports1111]

Thank U :)

[@greasemonkeyradio1279]

I built a 400m Ford with a similar Comp.Cam profile. Very streetable.

[@dcimotorsports1111]

Cam works very well for a weekend warrior or daily driver :) Thanks for following !!! Please subscribe and hit the notification bell for future videos. Come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@flyboy8364]

What kind of choke is on that carb? Looks like a hot air carb but i dont see it connected to the intake.

[@dcimotorsports1111]

This is a later model carb with an integral choke and choke housing. These were either heat actuated or electric. We put a electric choke stat on this one.

[@Dallas-Rife-UDX-347-Tennessee]

Very disappointing not getting to hear that throttle crack to 5K in the open header layout 😫 Very healthy sounding though Nice job guys

[@dcimotorsports1111]

Check out my other video I done with open headers :) Thanks for following !!! Please subscribe and hit the notification bell for future videos. Come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@elainestamper3873]

Sounds just like the 400 in my TA my 400 really turns on the rpm ! Been told if I switched to 455 it wouldn’t turn nearly as hard as the 400 with the same cam and parts

[@dcimotorsports1111]

400's are fun and have a little broader power band than the 455. I love the 455 for its TQ though. Thanks for following !!! Check out our Podcast tonight and every Wednesday night from 7PM to 8PM Eastern.

[@nunyabiznuss124]

It'll almost idle smooth once the mass of the torque converter is added.

[@dcimotorsports1111]

Its does effect it some but not as much as you might think. Thanks for following !!! Please subscribe to my channel and don't forget to hit the notification bell for any new videos I post. Also you have a standing invite to my Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern. Hope to see you there :)

[@McHoochWerks-gu1pk]

Valve covers make that "injun". 🤣💪🇺🇲🏴‍☠️

[@dcimotorsports1111]

Thanks for following !!! Please subscribe and hit the notification bell for future videos. Come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@ScottTeeselink-ik2fz]

Both mufflers sound great but I love the sound of the Dynomax. In order to make a standard 400 hp (1977 - 500577 block), what would you do to make it perform? I'm looking for an upper 12 second street car. It has 3:42 gears, a holley 750, torquer 2 manifold, 1.52 scorpion Rocker Arms, a custom grind cam thats slightly hotter than the Ram Air 3, hooker headers, thought I wasn't to change to ram air exhaust manifolds, a coan torque converter Eventually, I'd let to get a 3 angle valve job Should the heads be ported and polished as well? I was thinking of getting an Edelbrock performer for and getting a perfor m ance kit for rochester carb from Clifs. What do do you think? Any suggestions?

[@dcimotorsports1111]

Scott the 557 blocks are pretty weak and the mains will blow out with not much over 400 HP. So you may want to consider an earlier block to build on. I would not use the performer, the performer RPM is a way better intake. Q-Jets are awesome carbs, but will require a killer fuel system for anything over 350 HP. With the correct cam and cylinder head work 12's is achievable. Porting would just be icing on the cake.

[@fastmachines500r8]

Nothing like a Pontiac engine

[@dcimotorsports1111]

My Dad got me hooked when I was a kid. He always had some kind of a fast Poncho while I was growing up. I have fond memories of him rowing through the gears in his 67 GTO, 63 Catalina with a 421, 68 Firebird, ^9 Firebird you get the idea lol.

[@BobbyGreen-py1ho]

What’s crazy is I have a 461 stroker engine with number 13 Pontiac heads runs great but can’t get that wicked aggressive revving 😢

[@dcimotorsports1111]

Don't beat yourself up to much. It took me years until I figure out the right combination of valve seat angles and head porting to get it like this.

[@BobbyGreen-py1ho]

So do you have to have the heads ported? the only thing I did to the heads was 3 angle valve job

[@BobbyGreen-py1ho]

And I have a Howard’s rattler camshaft it has a 480 intake lift and a 488 exhaust lift as well

[@dcimotorsports1111]

@@BobbyGreen-py1hoYes heads are ported. Keep in mind though that we have done a ton of R&D to get the exact valve seat angles to perform like they do. This isn't a standard 3 angle valve job like most shops perform. We used to do ours like that, but have since learned a ton more over the years and applied it. :)

[@braswilliams6301]

I like the Dynomax

[@dcimotorsports1111]

Thanks for following !!! Please subscribe and hit the notification bell for future videos. Come hang out with us every Wednesday night on our Bench Racing Podcast from 7PM to 8PM Eastern.

[@ProudMurican_PVT-GR137]

What a lion

[@dcimotorsports1111]

Thanks for following, Please subscribe and hit the notification bell for our future videos. Come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@OldManMuskrat]

I wanted to hear the Q-jet secondaries open up

[@dcimotorsports1111]

It revs to fast and if we crack those open its to 7000 RPM which is way out of this engines safe zone LOL.

[@mattbauckman9907]

Flow masters are chambered not flow through. I always thought they sounded pretty good. They do in this engine too.

[@dcimotorsports1111]

They do have a venturi type chamber / baffles in them. I call them tin can mufflers because the way the sound. I used to love the sound of them, but I must be getting old lol. I like the turbo sound better now.

[@ronaldikey3421]

it would be great to catch up, still out in randolph?

[@dcimotorsports1111]

Yep 2477 State Route 44 Atwater 44201

[@kennethcohagen3539]

It sounds pretty mean! I like the dynomax mufflers, but I would run them with cutouts. I like the quieter mufflers because I like sleepers. I would probably add a resonator.

[@joefradette8137]

That's what he's going to do.😀 I know Craig, who this motor is being built for.

[@Michael-gu3tj]

I run dynomax ultra flow welded. Give those flowmasters to a chevy kid

[@dcimotorsports1111]

Love the Dynomax mufflers and Magnaflows. I used to like the Flowmasters but not so much anymore.

[@davidkeeton6716]

I love the valve covers that say 100% injun, and he proceeded to rattle off a laudry list of aftermarket parts. Bwaahahaha

[@dcimotorsports1111]

Thanks for the KUDOS on the valve covers. I know some want to hear whats in the engine others just want to hear the engine lol.

[@ensignstephens6307]

Always been a fan of the flowmaster but that's just me.

[@eightzerotwo]

Just listen to er boys she’s gotta keaaam!

[@dcimotorsports1111]

Reminds of the commercial asking if that's a HEMI 😂

[@lennymalley745]

❤❤❤nice motor I prefer the straight headers😂😂😂😂

[@dcimotorsports1111]

Thank You for the KUDOS !!! Come hang out with us every Wednesday night on our Podcast from 7PM to 8PM Eastern. Thanks for following :)

[@williamgluchman512]

What size carb

[@dcimotorsports1111]

This a 800 CFM Q Jet from a 77 or 78 Trans Am.

[@chrischiampo7647]

I like Turnouts No Muffler 😀😊😀❤️

[@Foxtrot1967]

+1 Dynomax. They sound deeper and less tinty

[@adamstainker5411]

We didn't get to hear you put any ribs on the flowmaster mufflers

[@dcimotorsports1111]

Stay Tuned !!! Im going to do another video of this engine. When I do I will rev it more with all three set ups.

[@clydephilpot822]

The flowmaster and I don't care who you are but I notice that you did not read the engine up so people cannot hear how how good the flowmasters soundin and I'm pretty sure you had to flowmasters on backwards

[@dcimotorsports1111]

Flowmasters definitely have a unique sound of their own. They were on the right direction, we cant put them on backwards because they left over piece of pipe in the tail pipe end lol. I will do another video and we can do idle, 2000 RPM and whack it :)

[@FredCombs-j7o]

Flow master

[@congerscott6064]

Great job for sure, i had to get out of the hobby, just got too expensive for me 🇺🇸👍🏆.

[@dcimotorsports1111]

It is expensive !!! Thanks for following !!! Make sure and check out our bench racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@Perfer-gw6ir]

All those great parts on a cast crank? WTH?

[@dcimotorsports1111]

Pontiac cast cranks are super tough and will hold easily to 700+ HP. They made with nodular iron which is way better than grey iron like some others used.

[@butchs6099]

I want one!

[@dcimotorsports1111]

We can build you one :)

[@butchs6099]

Thanks, wish I could afford it. The only thing I've got to put it in is an old '74 Ford F100 Ranger and the gas tank aint big enough to feed it.

[@dcimotorsports1111]

😂😛@@butchs6099

[@ZeroBoostBuick]

Why such low compression ??? Is premium gas not available anymore ? I prefer Magnaflow exhausts. Way better than anything else out there with 304 stainless for those of us who live in the snow and have to deal with salt on the roads.

[@dcimotorsports1111]

I need to make sure it will run on 91 octane pump piss. Anything higher and there is a risk of detonation.

[@orlinkoehmstedt5043]

FLOWMSTERS!!!

[@dannyoutlaw8001]

Put a 40 pound converter on that flex plate full of fluid and watch what happens to that throttle response....

[@dcimotorsports1111]

Watch the other video of this engine with the 30 pound flywheel. Still pretty impressive :) Thanks for for following !!! Come hang out with us every Wednesday night on our Bench Racing Podcast from 7PM to 8PM Eastern.

[@michaelyoung1901]

Definitely the Flowmasters

[@johnlam3037]

The Flowmaster sounds much better

[@jaredallen1149]

Flowmaster. Hands down.

[@southernman7692]

no muffler is always tha best sound

[@johnarnold893]

Why not shoot these videos in landscape, portrait mode is like looking through a keyhole, you know, like a peeping tom.

[@dcimotorsports1111]

My camera is set for full view but doesnt record that way. I've had people better at this than me try to fix it and it still does it. 😞

[@JesusEspino-o1s]

Dyno Max sounds better,I use borla , sounds good

[@dcimotorsports1111]

Thank U :)

[@michaelsleigher1307]

Flowmaster

[@MH-WM]

Could have cracked the throttle just a tad

[@dcimotorsports1111]

We did a little around the 4:33 mark in the video. I did three more shorts with this same engine with the different mufflers and open headers. We cracked the throttle on all three. Check them out :) Check out my Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@copisetic1104]

I like as quiet as I can get and maintain HP and torque. I don’t like boy racer obnoxious loud.

[@dcimotorsports1111]

The older I get the more I'm getting like that too :) Thanks for following and please subscribe to our channel. Don't for get to hit the notification bell for any future videos we do :) Standing invite to come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@anthonyking4387]

Thats normally the case wt out a transmission connected to it!

[@dcimotorsports1111]

I hear that a lot :). You need to watch one of our in car videos. They rev just as fast :) Thanks for following !!! Check out our Podcast tonight and every Wednesday night form 7PM to 8PM Eastern.

[@Rockhead75]

Flowmaster 100%

[@markbogle8062]

The dyno mufflers

[@gholloway9935]

Wouldn't start without a flywheel

[@dcimotorsports1111]

Ha Ha yes you're right about that :)

[@roymusejr5939]

Dynomax mufflers

[@sterlingrachwal1320]

The first set of muffler

[@arthursmith5409]

Dyno sounds Better, choppy.

[@dcimotorsports1111]

It seems to be a dead heat right now 50/50 🙂 Thanks for following !!! Please subscribe to my channel and don't forget to hit the notification bell for any new videos I post. Also you have a standing invite to my Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern. Hope to see you there :)

[@Smarterthanyou-mthrfkr]

Needs a t56 behind it

[@dcimotorsports1111]

I think he is going to use a 5 speed.

[@VW5767]

Dynomax for me!

[@dcimotorsports1111]

I love the mellow tone of the Dynomax mufflers. I like the cackle of the Flowmasters too though LOL. Thanks for following !!! Come hang out with us tonight and every Wednesday night on our Podcast from 7PM to 8PM Eastern . We just shoot the BS and bench race.

[@AaronForbes-s6w]

Both sound great, but the 2nd set was better imo.

[@dcimotorsports1111]

Im a Dynomax guy, used to be a Flowmaster guy LOL.

[@robertnorthrup1914]

Back in the mid 70s I owned a 16 foot ski boat with an Olds 455 to Jacuzzi jet drive. Motor was balanced with a Isky cam. Fuel was always Chevron Custom Supreme (100+ octane) thru a Holly double pumper carb. When you stomped on it, the boat would hit 75 mph at 6000+ rpm. It drank fuel like crazy. Would haul 6 skiers from deep water starts with ease. It was a blast to own and run.

[@BobbyOfEarth]

My parents took my sister and I to the Oakland Estuary to the Berkley Jet boat dealer in 1966. They picked out a 16' green and gold metalflake boat with a 350 hp 327 Chevy engine, and we went camping and skiing just about every weekend during the summers. It had a top speed of 62 mph but got there in three seconds..

[@MrR6guy]

ill take shit that never happened for a 1000 alex

[@nalley6815]

@@MrR6guyif you find this hard to believe then you must be one sad broke mf

[@bradleymadosh911]

Never heard of a motor balanced by the cam 😂

[@robertnorthrup1914]

@@bradleymadosh911 motor was balanced and it had the cam as well.

[@michaelmyers3892]

Evolved engine colors that have been painted Pontiac has to have the most beautiful blue shade for any motor not to mention Pontiac has some pretty awesome motors

[@dcimotorsports1111]

Pontiac definitely hit it out of the park with engine color. I wonder how they determined the colors ??? Thanks for following !!! Check out my Podcast every Wednesday night from 7PM to 8PM Eastern.

[@xtop23]

All torque. Love those old Pontiac motors.

[@dcimotorsports1111]

Me Too :) Thanks for following and please subscribe to our channel. Don't for get to hit the notification bell for any future videos we do :) Come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@flinch622]

I know some disagree, but I always lean to dynomax. A company willing to put up cfm ratings isn't just selling sound. If its sound I want... straightpipes it is.

[@scottnorris8571]

UltraFlo's for the win !!!!! If they'll fit.

[@dcimotorsports1111]

I like the sound of Dynomax mufflers. They are combo of the lod turbo mufflers and the newer straight through can mufflers.

[@DMcElfresh101]

Ya, for not much louder than oem, but more performance it’s hard to beat good Ol’ Dynomax super turbos. 1 of the best performance for money mufflers is the Ultraflow line

[@dcimotorsports1111]

Definitely quiet @@DMcElfresh101

[@taylormayberry4826]

Anyone use hooker aero chambers. I’ve been using them for a while like the sound and performance

[@Enjoymentboy]

I'll never understand how anyone could enjoy the sound of a 4 or 6 cylinder engine when there's this music to listen to.

[@dcimotorsports1111]

LOL I agree, but there are some really sweet sounding high revving 4 and 6 cylinders. Thanks for following !!! Make sure and check out our bench racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@billyingram5394]

I’m a Flowmaster man myself and they sound so sweet

[@dcimotorsports1111]

The best is open exhaust :)

[@peteloomis8456]

The Flow masters use the delta flow technology that are welded inside the muffler casing made of thick metal so they are less likely to fail and blow out like a glass pack type of muffler that uses a thin perforated core wrapped with packing . At the speed shop I worked at years ago most of the times the Flow masters made more HP on the cars that we installed those on when we would run them on our chassis dyno and did prior runs with the stock exhaust or a exhaust that had run glass packs or the turbo mufflers and then we would run the car again with the Flow masters and they usually made more power especially once we started jetting for optimal HP and torque along with timing and advance curve settings. We had several turbo mufflers on big blocks that were new that actually split open at the seams and crimps because they were to restrictive and stopped recommending them verses the all welded Flow masters . My boss had a 78 pro street Elcamino all tube chassis car with a certified cage that was making 1,500+ HP to the rear wheels that had a stroked and blown 454 Chevrolet engine and he used the welded Flow masters on it and they took the punishment from that engine no problem. The car could be driven on the street but could knock off 8 second 1/4 miles when driven to the tack and some tuning changes made with the blower pulley. We built a certified tube chassis for a customer who had a 69 Pontiac GTO that was at one time a national record setting drag car that had a 455 using Kaufman heads and custom roller cam with the firing order changed with a aluminum sheet intake and a 5,000 cryoed custom crank that years ago was one of the quickest and fastest all Pontiac powered drag cars here in the good ol USA that was running mid to low 8s at a 160+ mph in the 1/4 mile that was named Bottle fed Goat which I still have a picture of it hanging in my garage to this day . We used to test and tune the car at the Brainered international raceway back then to work the bugs out of the car before the owner started racing it all over the country and setting records with it until he eventually retired from racing and sold the car and I've been trying for years to find it with no luck unfortunately.

[@dcimotorsports1111]

Well said, the only problem I had with a set of Flowmasters I ran for years, was the inside divider plates rusted loose and eventually block flow :( @@peteloomis8456

[@davidjohnson8474]

Wow that sounds great! My first race car in high school was a Pontiac Lemans sport. Which I still have in the garage with a 455! I can just imagine what that engine with a set of RAM AIR V heads would be like!

[@Mooseracks]

1972.... Lemans Sport... Nice looking car alright

[@dcimotorsports1111]

That's to cool, wish I still had my high school car. It was a 68 Firebird with a Pontiac 350 I built and ran 13.60's on M50 bias ply tires.

[@davidjohnson8474]

@dcimotorsports1111 ya it's been hard over the years! It's a 1971 Lemans sport with a 455 and a turbo 350 I built in tech school in 87! I've had my car since 84

[@kalybnielsen4183]

I like the QuadraJet, especially the M4MC style

[@Fhita1962]

Started of thinking to going back to the quadrajet. Definitely better gas mileage tooling around town, and the back secondaries are like kitchen sinks! Set up right, they're as responsive as any holley or edelbrock .

[@joequillun7790]

@@Fhita1962 Qjs are definitely more responsive than the square bore Holleys, or even the spread bores. Qjs have a double booster on the primaries, that no other4bbl has. It equates to supreme throttle response and better fuel mileage compared to brand Xs. (when it is all set up correctly.) Of course, nozzle drip is excited much easier, and can be challenging. But worth the effort on a street machine. As for Edlebrock carbs, they never made (invented) them. Just stuck their name on there.

[@davepriddy9263]

I like the Flowmaster mufflers better.

[@dcimotorsports1111]

The Flowmasters do have a unique sound and I used to love that sound. Now I must be getting old lol , and I like the Dynomax better :)

[@texasamericanpatriot8535]

Wow! Someone who knows about a QJet! Kinda rare these days.

[@dcimotorsports1111]

I love these carbs. I wrote a performance tips manual on them back in the late 80's and sold it. The DCI in my name stands for Don's Carburetor INC. That was how I started my business 43 years ago as a carburetor shop. Back then we everything had a carburetor :)

[@azjohn520]

Had both of those mufflers on my 67 Chevelle at one point. The FM’s had the cool factor at idle no doubt, but were annoyingly loud at “cruise”. DM’s were exactly opposite. I drove more than I idled, so I chose the DM’s.

[@dcimotorsports1111]

Agree and same reason why I use Dynomax or Magnaflow. Thanks for following !!! Please subscribe and hit the notification bell for future videos. Come hang out with us on our Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern.

[@timothyhall7153]

Throttle response is going to be phenomenal when nothing is bolted to the crank

[@harrypalmer291]

Nice to see the Pontiacs still being appreciated. Much better engines overall than 1st generation chevy small blocks.

[@dcimotorsports1111]

I agree 100 percent, but there are lots that dont agree :)

[@craigpennington1251]

Pontiacs sound glorious with 60 inch X 3 inch round straight pipes.

[@TheRoguelement]

For all of you who think this is just OMG it's just magical . WELL it's not . He has NO Torque convertor No Trans just a stamped steel flex plate .. of course it's going to sound like it spins up quick . That is NOT realistic...

[@dcimotorsports1111]

Don't be hating :) I have other videos of these in cars with all the pieces parts you just mentioned bolted on with the exact same rev ability.

[@mechanicjamz]

3 chamber delta flows. But WOT no mufflers

[@maegenyoungs2591]

With a AFB.. it’s not your combination.. it’s definitely because nothing connected to flex plate.. Quadra junk carbs are not a high performance part, don’t get me wrong, they can make crazy power, but most of the men who understand them that good are dead or close to.. booster signal- cam overlap- duration- I mean you really have to understand what it is you are doing with them. Does sound good though

[@dcimotorsports1111]

Thank U for the KUDOS!!! Adding some flywheel weight does slow the response down a little, but very little. Check out some of my in car videos to see how fast my engines rev. Every one of them hits the rev limiter almost immediately when we get into them. Something you may not know is the DCI in my business name is an abbreviation for Dons Carburetor INC. I started as a carburetor shop in 1980 and it progressed into a Performance Shop. I actually wrote and published a hop up manual on the Q-Jet carburetor. I still have the master copy somewhere here around the shop. Thanks for following :) Check out my Podcast every Wednesday night from 7PM to 8PM Eastern. Its a place to come hang out and bench race.

[@josecora1917]

I love Pontiac engines ! My dad has a GTO 69, THE CAR WAS STOLEN 3 YEARS AGO, never see it againg. 😮😮

[@dcimotorsports1111]

Man that sucks 😭 That happened to a customer of mine, but they did find it. It was trashed though😡 Thanks for following !!! Please subscribe to my channel and don't forget to hit the notification bell for any new videos I post. Also you have a standing invite to my Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern. Hope to see you there :)

[@andrewpipitone1572]

Oh man.... now hearing this i will take precautions I have been so lax. Oh man that really sucks. You know there changing the vin.thats sucks

[@edsmachine93]

Sounds great Don. Nice job.👍👍

[@dcimotorsports1111]

Thank U Sir !!! :)

[@MikeRobersonDaddyDoeBucks]

Flowmasters for me........both sound amazing though...winner either way

[@dcimotorsports1111]

Thanks for following !!! Please subscribe to my channel and don't forget to hit the notification bell for any new videos I post. Also you have a standing invite to my Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern. Hope to see you there :)

[@paulkendrick69]

FlowMasters all day long

[@altonleonard17]

I like the Dyno Max Mufflers and used to run those on my truck as well for 12 yrs. Running Flowtech now to match my headers.

[@dcimotorsports1111]

Its funny how we all used to like Flowmasters back in the day :) I'm with you I like the more mellow tone.

[@jacobhamm797]

I like the Dyno max better

[@shockingguy]

Very sweet Motor, love that throttle response, just stumbled onto your channel, not far away up here on the west side of Cleveland

[@dcimotorsports1111]

Thank you and Thanks for following !!! Make sure and check out our bench racing Podcast every Wednesday night from 7PM to 8PM Eastern.