6 Biggest GM Engines Ever Made

[@Coronet_shop]

Long live the BOP 455's Buick Oldsmobile and Pontiac big monster engines

[@mheath7178]

The Coronet Shop I love the BOP motors. Nowadays everyone wants to "LS Swap" their cars. But some of us keep our Oldsmobile Rocket engines!

[@Coronet_shop]

mheath717 Hell yeah BOP till i die

[@v8hotrodlincoln]

An OLDSMOBILE “W” coded 455 Rocket will bust that small blocks ass I have a 1971 SX with W-32 455 and right now my buddy won’t talk to me cause I spanked his LS-1.... with his 4:11 gear I’m running highway gears posi too. 12 bolt posi. Lolol. NO REPLACEMENT FOR DISPLACEMENT.... I pulled him hard too...

[@jamescarter1500]

They sure did drop the ball with the 403👎

[@TheNuclearBolton]

Got one in a 56 f-100 👌

[@Clete88]

I think the ZZ502 deserves mention......the one I owned was formidable as hell! Over 500 HP and over 500 ft/lbs of torque throughout most of it's RPM range....it was a beast.

[@SurviventheOnslaught]

when you work on a 496 boys, you gotta have a cigarette dangling out of your mouth at all times

[@davidgott5719]

Jo7 nojo hi bio nook

[@thomasfulton5696]

Preferably a Marlboro red

[@betosgarage]

Bruh hahahah

[@wilsoncrocker]

duh

[@matthewhartup941]

and a mullet and a beer

[@jayelbee1111]

Each GM division used to design, engineer and built their own engine. For example, each division had a 350 V-8, but each division quietly interchanged engines between GM models. You would see a Pontiac equipped a Chevrolet engine. A Buick equipped with a Oldsmobile engine. An Oldsmobile equipped with a Cadillac engine. A Chevrolet truck equipped with a GMC engine. Customers complained about that, so GM had to create Powertrain division, who now build engines for all GM brands. It would be nice if each GM brand design their own engines again.

[@walterk1221]

The title needs to specify *petrol* engines! GM makes locomotive Diesel engines in which a *single cylinder* is larger than the largest entire engine you present here! This is in addition to the issues already raised by others.

[@BrewBlaster]

Okay, can we ALL assume this is at least an automotive engine list????

[@walterk1221]

BrewBlaster Nope, assume = "ass out of you and me" (ASS U ME). If it isn't explicitly stated then it isn't.

[@BrewBlaster]

Well you can compile all Volvo engines made, but their trucks and cars are actually two different companies. Still, I get what you are saying.

[@177SCmaro]

Walter K You do realize the name on the video is "Car News Central", right? What kind of engines did you think you would see?

[@walterk1221]

177SCmaro The title reads "... biggest engines GM made", so I expected to see the *BIGGEST* engines GM made; not the biggest passenger-car engines GM made.

[@Edgar-Friendly]

No 637 or GMC 702 = failed video.

[@huntersnoeberger7706]

No 502 either

[@robertreznik9330]

The 637 was a V8 and the 702 a V12 for truck application ...not pickups

[@raysylvia2846]

There is a caddie 8.2 I had one in 1976 model. Also there is a 800 on GM displsy

[@davidstjames_]

Agreed! Keep in mind that GM owned Detroit Diesel, none of the engines here were anywhere near the largest six.

[@extremedrivr]

@@huntersnoeberger7706 I think the 496 was supposed to be the 502 because the 396 was actually a 402.

[@amontijackson573]

So true about the cigarette. Never trust a mechanic that doesn't have one dangling from there mouth that the ashes never seem to fall off the cigarette I like that statement because it's TRUE lol

[@dcornelious8080]

Dam that's our life

[@TheMSTWNTD]

Olds 455 sounds amazing my friend has one in his boat.

[@mongoosar00]

I think you missed the 502

[@a1duzit]

mongoosar00 yeah seriously. The 572 is a 502

[@jdrok5026]

a1duzit 572 is a lot bigger in general then a 502

[@smallblockchev64]

@@a1duzit sorry but the 572 is a completely different motor than the 502. The 572 is a tall deck motor unlike the 502 and a different block. By the way...you're welcome😉

[@roughroosterknifesharpenin5531]

I was wondering rhe same thing

[@extremedrivr]

I think the 496 is the 502 for the same reason the 396 was actually a 402 in disguise. That was because of the beurocrats at GM said nothing larger than 400 CI in mid sized cars until 1970 rolled around and that policy got lifted.

[@LarryC213]

As they say, there is no replacement for displacement.

[@richardperham5001]

If they could make a 500 ci produce 190hp then there is no sense to that argument.. I have a 2.8l BMW that makes more

[@Joetrout]

A 8000rpm small block

[@marcopolo-zh4je]

@@richardperham5001 turbos have displacement too

[@ronniesmith65]

Richard Perham all things equal, nothing beats cubic inches.

[@mylifeofchaos]

I may be out of line here but more cylinders is a replacement for displacement. Example-fords 300CI inline 6 vs. GMs 4.8L V8. Then again anything GM is a replacement for a ford.

[@Spahr.k182]

The 496 is just a stroker 454 and the 572 is an aftermaket block

[@mr.channel6467]

ford k182 what’s a stroker dude?

[@flyingpirate0456]

@@mr.channel6467 It's an engine which has its piston stroke length greater than that of the OEM stroke length

[@Cuhh346]

Gm sells the 572

[@DaDonBossMan]

I would disagree to an extent since the 496 was the successor to the 454

[@Cuhh346]

@@DaDonBossMan yeah and gm mass produced it in the 3500

[@vincecobch6851]

What about the legendary 454??

[@questionable8158]

Vince Vape I was wondering the same thing.

[@marcobarbertorres7486]

427

[@user-el5mg4it9t]

LsX ≠ big block

[@kevinroark4346]

@@user-el5mg4it9t The LSX454 is actually a SBC.

[@christopherd2100]

The 496 is the same motor but stroked from the factory. Basically the 454's final form.

[@YazanGharaibehzex]

Where is the 511 & 502 ?

[@jordanloewen7636]

What about the 632?

[@trippcrane3793]

jordan loewen 632 wasn't made out the factory in a car it's a aftermarket block they made

[@remibenoit763]

tripp crane the title of the video doesnt said that

[@thetuber705]

+Tripp crane None of these were put in cars from the factory...

[@ROTAXD]

Just for youtube Just for youtube the 496 was available as a factory option for years in gm 3/4 & 1 ton trucks. The 455 was avail in pontiac & olds cars for years as were both cadillac motors (472 & 500 cu. in. ) were factory motors.

[@thetuber705]

I didn't really watch the video, buick had a 455 too. I was just expecting this video was on all the shitty gm crate motors like 502 and 572. I just thought it was funny that people were asking why a 632 wasn't in this video.

[@enzoprosciutto210]

I love the sound of that cam chop on that Oldsmobile 455.

[@thatonedude926]

Love the CRATE 572. the Pontiac 455 is beautiful as well

[@robertalanwolfe]

Jonny Weber b

[@paulbell7102]

The 572 and 496 shown was never available in a vehicle. Bigger than you noted here is the 1960's 702ci GMC Twin-Six V12 Engine. Offered in trucks.

[@miguelcastaneda7236]

Paul Bell also the 401 v6...truck engine....and 515 used in caddies

[@spik3stactical]

Actually the 8.1-496 was available in the gmt800 trucks

[@paulbell7102]

Yesir, you are correct-but it was a very different engine than shown in the video. The one shown is a bored and stroked 454.

[@dougb6239]

The 8.1 was a option in all chevy pick ups,avalanches, big trucks. Partnered with mercury THOUSANDS of boats have the 8.1. Was a very popular engine. So from 2001 to 2008. This is obviously a marine engine here in the video.

[@landspeed77]

or the caddy 510

[@ALABAMAHEADHUNTER]

How about the 702c.i.d. V12 ?

[@Exterminatingtraper]

1400 pound motor try 1600 pounds dry, and never mind when that 5.5 GALLON oil pan is full but 650 ft pounds of torque at idle and a 5500 rpm redline is good enough for me

[@westsideflyer7559]

That big Dual Six/V-12 was a big one. For sheer iron bulk, not many bigger and heavier that will go in a medium/heavy weight truck (dump truck, fire engine,) Lots of these were used as water pumps on farms. This, of course, was before there was something like a light weight diesel. But, pretty cool none the less...

[@westsideflyer7559]

There are a few of them in hot rods rat rods. As a car engine.... eh... As a noisy thing to put in a rat rod. OK...

[@Anythingwithanengin]

Or the 632 chevy???

[@megadethguym7977]

Does anyone know why the 454 dident make the list?

[@Nick-1992-SRB]

There is no replacement for displacement God I love these big powerful engines 🚦🏎👌🏼

[@joeblow800]

Why not do research before you upload these videos? I've watched many of your videos and they are all, full of misinformation about American vehicles.

[@Zz30myron]

Joe Blow nope this is pretty accurate some a good amount of his other vids are tho

[@zacht9447]

Not at all bud

[@yzScott]

I would recommend including several examples of their errors paired with the correct information. It won't be difficult. These are really sloppy.

[@LacquerSniffer]

This list is a little off... They made a whole line of extremely oversized strait sixes, including a 707 ci strait 6 and I think several other variants of the same block that were all over 600ci

[@luckyduck5831]

I had a 1983 Pontiac Grand Prix with a V6 .....back in my Tech School 1989-90 .years ...unfortunately I.blew the engine so myself and a couple of friends ...swapped a 1974 ..455 Oldsmobile Rocket engine with transmission ....after changing the front springs , customed made the motor mounts/transmission cross member , installed a 4 row radiator from a suburban , and installed dual exhaust ( with 2 silencers ) on the exhaust .....many taught it was a 305 or 350 powered Grand Prix ........to their suprise that car was super fast , sadly I totaled that car ...gave the engine and transmission away ......those 60s and 70s GM engine were strong and under rated , hopefully one day I'LL find another Oldsmobile 455 Rocket engine to put on my 1985 Pontiac Firebird I have in my garage .

[@charliedee9276]

I replaced the 403 Olds motor in my 79 Trans Am with a 455 Olds, looked totally stock. It was not, thing was a total sleeper. I ended up selling the 403 to a friend who put in a 70 Cutlass in place of the 350. Again looked stock but it surprised a lot of people, this was in the 80's when the very first Mustang 5.0 GT's were coming out

[@psychotrucker9880]

My truck with a 496 got stolen at Bristol dragway. BMS didn't care what so ever. The cops said thefts happen all the time in east TN. The cops called me 3 months later and asked me if I had found my motor and truck. I didn't know if I should have laughed or cussed.

[@kegankirkpatrick2688]

life of Wyatt are you not like 15

[@topfuelkustomz3729]

I’m so sorry to hear Bms does suck ass but ya sorry to hear about your truck

[@johnnyportwood6739]

I am going to listen to these bad ass engines all day

[@MultiPowerlin]

There is a guy In my neighborhood who owns a hearse from the 70's and has the big block 500 it's loud

[@LgSutterby]

I'm currently building a 472 for my rat rod project. Going with headers and side pipes... Hope she talks 😜

[@tacoma5543]

Doesnt have to be loud though. My old and cherished 78 Eldorado had a 500 and was so quiet the damn thing could sneak up on people that didn't even hear me coming.

[@richarddalton5191]

I inherited an old 74 impala with a 454 cid,after I went thru it,including personally shaving and rebuilding the heads,putting everything back as it came from the dealer.The damn thing was pure badass

[@r8moss]

No 1

[@deejay2299]

@@r8moss nothing like a 454

[@fuzzydizzeep9962]

what´s the secret of the german car at 3:41 from Kassel with historic license pl8 ?

[@notmenotme614]

1:42 Greta Thumberg had heart attack watching this video

[@ytubeerr]

I truly love my 500 cid that's now stroked out to 541 cid it was a great build and now installed in my beast of a outsider truck great video

[@whathappened2230]

Ive still got 2 sets of C casting heads for Olds 425,455. I miss my 455 Cutless!

[@NTZClaw]

I know the feeling;1979-ninety-eight 455cu 350rocket

[@_aj345_]

Question wasn't the 455 in oldsmobiles also

[@diesel379x]

That olds 455 gave me the chills. The bad boy would be sweet sitting in my 87 442 cutlass.

[@maximase86]

Far from the biggest engines GM ever made by a long shot. An EMD 20 cylinder 710 is proof of that. 710 cu. in. per cylinder, at 14,200 cu. in.

[@spannaspinna]

Then there is the d dec engines built in partnership with MTU

[@mrwhips3623]

🤓🤡💀

[@michaelcuff5780]

Man! That brought back alot of fond memories! Thank you!

[@rickkephart5690]

I miss those days of having a car with a big block in it. Fun times to be sure.

[@noylpb5665]

Rick Kephart ww

[@noylpb5665]

Rick Kephart v

[@emmyrodriguez4746]

I love sound v8 motor 😍😍😍😍

[@ayoungcarenthusias6002]

Emmy Rodriguez i love tha sound of a rotary engine😍😍😍

[@emmyrodriguez4746]

Nick Young rotary is best sound 💪

[@justinmyslive4108]

Emmy Rodriguez oh God yes

[@kikomura5247]

including weapons

[@ralphtrujillo1752]

Emmy Rodriguez I can say I owned every kind of engine out there besides B12 and B tens I had a 4 cylinder turbo had a V8 had a 6.0 with a procharger on it I can say nothing is nothing like a 6.0 with a procharger in a Chevy Cheyenne I don't think the Corvette wants to try keeping up

[@SwoopTvOnline]

Wich one of those engines would fit in a 1994 chevy camaro...if anyone knows it would be of help...thank you

[@zxtenn]

Love that 572 pick-up the rest is so-so at best

[@beaner2907]

Love the sound of that Olds 455

[@danieldavy8055]

Idk where you got your videos or stats from, but i believe this couldve been made much better to give credit where its due..for example, the olds 455. The vid did zero justice for how awsome of a motor it really was. And lets not forget the stage 1 buicks with 455s as well

[@dareuslomas94]

Damn that cadillac 472 was loping pretty mean

[@diablocls55]

That sounded like shit

[@georgeblack3185]

I had a '73 Trans Am, for 23 years, with a Super Duty 455 (7.5 Liter), built for street racing :)

[@archiecunningham3734]

George Black did you live in Vegas? I used to ride in one It was my dads buddy. Still remember it. Bad ass

[@teamtoyota9048]

George Black my grand father gave me one as my birthday present when I turned 15. But I swooped it for a fucking golf. What a fuckin idiot 👹.

[@teamtoyota9048]

My biggest wish in life is to afford one now and actually find one

[@wk3818]

What happened to it?

[@skateboardingprogression6008]

At 5:00 i thought the radiator hose was the exhaust pipe spiting that much gasoline

[@RatRodBobBuilds]

WOW! Glad I got this 496. Would rather have a 632 but .. oh well!

[@thomasbutcher6221]

GMC had the cake taker with there 503 inline 6 truck engine. And the huge 637 CID V8 truck engine, same platform as the V6 and 702 v12!

[@kylerice8742]

that Cadillac sounds badass ,especially when you have headphones on.

[@ROTAXD]

Second one (496) is obviously set up for marine use and is making far bigger numbers than just a plain ol crate motor.

[@jdrok5026]

ROTAXD 496 was a industrial motor that's why its said 455-600ish pound feet of torque

[@jonwarsheski7238]

Sorry but you forgot 2 . The GMC 637 " v-8 and the 702 " v-12 . Cool video , love that GM thunder !

[@carlmanx1680]

3:58 Reminds me of a friend of mine that Built Running Engine Stand, With a Radiator, Fuel Tank, Oil Pressure Gauge, Engine Temp Gauge, Tachometer, Boat Throttle, Fully Adjustable Motor Mounts ( With Accessories) You could Mount up almost any Motor to it. And A Co.2 Fire Extinguisher. It Was AWESOME 👍

[@bronzepkmn]

Why does this channel have so many subs he never fact checks anything

[@garyrehak5336]

Bronze TCG 12 year olds

[@phoenixrising7047]

Nor do the viewers? I LIKE CARS. ME WATCH KZbin. V8'S ARE FAST. MAYBE THERE IS A GOD AND THE EARTH ISNT AN OBLATE SPHEROID?

[@MichelLinschoten]

Because yourtube is full of stupid little teenagers thinking they are experts, while not even driving a car lol

[@Downbytheribber]

Fake news is popular these days

[@itbsection8980]

Simply SICK!

[@carlwtf4444]

All Engines are awesome..... From an old school hit and miss to a super car or too fuel. All good..... enjoy them all.

[@pusher44gmcjb25]

As usual, you missed the biggest production gas V8 EVER: 1960s GMC T&C 637 V8. So big, so heavy (nearly 1,500 lbs.) it was used in only the largest trucks - 9500 series. My H model conventional cab had the distributor and back two cyls. in the cab next to my right foot. And terribly de-rated to 275 hp and 500 lb. ft. Often found in fire trucks, as was mine. 4 mpg around town and 100 gal gas capacity. I love my fire truck!

[@jamesavery6671]

Hes talking about hot rod engines. 1500 lbs is far to heavy for a street car

[@hiltonbender8511]

pusher44 gmcjb g

[@westsideflyer7559]

You're a little behind the game, pale. Someone brought up that motor weeks ago.

[@Icepacalapse]

572 was sold by mercruiser on the 1000sc engine option and later as 542 in the 900sc. I consider it the largest GM big block chevy that was available with a warranty.

[@Cuhh346]

Where is the 502 chevy and the 632 chevy and the 454 turbo jet and the 427 chevy

[@levisylvester]

The first truck is sooooo cool

[@vicentefuentes67]

Thanks GM for continuing to make V8 engines "really" (I was a fan of Ford, but I do not know what happened to them)

[@louiewatson9389]

Vicente Fuentes ford makes v8 engines still. The 5.0 is one.

[@vicentefuentes67]

Yes, I know, and the 6.2 L, but they do not have the fabulous Torque of Big Block engines that Chevrolet currently manufactures, as before. For example Ford should continue to manufacture the fabulous Boss 427 or the 428 SCJ, to name a few. Chevrolet, thank God, continues to make Big Blocks (see the website). Just because of that, now I'm a Chevrolet fan, and I still like the Fords but not those of now (Except the pick-up King Ranch F-450, I love it)

[@starbattles1]

Ford still makes v8's dumb ass. PLENTY OF THEM. 4.6, 5.0, 5.3, 5.7 You're an idiot.

[@starbattles1]

GM is still stuck in the stone ages thinking you need big cubes to make power. GM has ALWAYS needed bigger motors to compete with Fords smaller motors. The fact they continue to do it shows they are way behind and have learned nothing, and they suck compared to Ford, ALLL DAY LONG!!

[@CloroxGodThe1st]

#countryboycansurvive nobody wants a gay ass v6 super/sports car. V8 was always a choice back in the day and is should stay that way with american cars

[@waynehardy6186]

What happened to the 455 buick

[@gilbertguzman531]

That cadillac 500 sounded purdy nice

[@cecilg.relation2537]

2003 avalanche with 496. I love it. Torque is unreal stock but when you start playing with it...

[@williammanson7653]

496 halls my 20,000 pound motorhome easily.

[@butchcarter4616]

What exhaust??? Sounds great

[@bigian5656]

which one? And probably none

[@butchcarter4616]

@@bigian5656 572 really sounded great also we’re where the mufflers located Thk s again sir

[@bigian5656]

@@butchcarter4616 no need to call me sir and no problem. I’m guessing it some sort of Magnaflow muffler 2-3 feet “as the crow flies” from the engine. Most likely under the cab, but I can’t see it that well. Looks like 2 inch pipe(should be running at least 3” especially with a muffler system) with an H pipe(but I’m just guessing by sound). But I could be completely wrong. Would have to see in person to tell you exactly what’s been done.

[@mad7medieval7]

68 cherry red firebird was here in town with a built 455 was really nice. Also seen a 1970 c10 chevy with a fresh 500 cadi engine to go in it

[@tonysmith2360]

The 496 sounds like a sherman tank starting up.

[@johnt4060]

"There's no replacement for displacement"

[@cameronriccio6050]

What’s going on with the 496? It looks to be spitting fuel out of the exhausts

[@jakegunter5892]

I love that Cadillac 500

[@DMTruckSpotting]

If these were the 6 Biggest engines produced under GM, none of these would be on this list. Instead, you would have many used in locomotives and power generation instead, such as the Detroit Diesel 20V-149 or the EMD 20-710.

[@buldozernjm354]

Really best ever enginezzz... I liked the oldsmobile engine.. Wish to have it

[@timsharpe3498]

The basic Pontiac 455 came with an extremely conservative camshaft so adding headers and intake will give you no real gains until you upgrade the cam.

[@jeremypilot1015]

I had a 75 DeVille with the 500 I miss that car.

[@chaniem.5422]

Some of those old Cadillac and Pontiac v8's sound awful

[@haarmann91]

sure sound great

[@Blueknight1960]

Now that is how a muscle car sounds. Not like today's exhaust with the overly loud tinny sound.

[@raypettit74]

454, 460, 502, 572 Chevy, 472 and 500 Cadillac, 460 Ford, 455 from Pontiac/Olds\Buick, lots more

[@ToG_7]

Is that all fuel at 2:05???

[@MikeCindyWhite]

Nice!!

[@JohnnyRebKy]

Damn that was a sharp 68 Chevy!!

[@douglynn5906]

Gmc built some very large displacement gasoline straight six cylinders before 1954 including a 360, 426, 477, 503 and 707. These engines were in the large trucks starting at the 620 series and going up to the very large 970 series

[@donziperk]

That 455 on the engine stand looked kind sketchy wobbling around. That 496 sounded nice. Bit of bias there I have one in my boat😁

[@voidchaser3185]

Time to add one more to the list.

[@extramiddle2106]

the 572 whatever was insanity... that big ass engine. and since I'm an American i will point out a downside which would be the MPG which I'm sure my semi truck performs better in that catagory

[@maynardreed8374]

What about the 702 v12

[@coleschott007]

these clowns couldn't find any of the multitudes of built and nice Cad 500's?

[@LgSutterby]

I know, I was hoping to see the one in the T bucket chassis! Lol I'm currently building a 472 for my gf and I's rat rod project.

[@coleschott007]

very cool, cant go wrong with the big caddy, ive got a 69 el dorado drive train to put in the back of my sand rail project

[@hackfreehvac]

LOL I know. I was cringing at that RATTLE CAN REBUILT 500 as it ran for several minutes without water or the water pump in operation!

[@marcmo7138]

I agree that was a jumbled mess of a 500 that sounded terrible

[@fatnfurious9171]

Generally if it's still on a stand it means it's still being tuned. But that's just what I think. And they should be fine running engine for a little while with no water.

[@daddyowe6]

Wtf wow that first truck 😲

[@velenarhodes5615]

Were is the 409 big block

[@richardperham5001]

It says BIGGEST..

[@akassasin5768]

1:23 now I'm no expert but it looks like you got a tiny bit of blow by.

[@johnbellas490]

You fella's missed one, It was the 702 cu V 12 by GM primarily used in medium trucks and some fire trucks.

[@miguelamaya6246]

Awesome

[@jeffwolf8018]

Those are some beautiful engines, to see the distributor cap, wires, carburetors, incredible.

[@talal454]

GM IS THE BEST

[@talal454]

We like the old school engine it sound awesome it make the old man feeling good and shout ( i get the bower)

[@mahmoudsalem6724]

American cars are the best

[@blakeok952]

Chuy Delgado pontiac,chevy,gmc,buick,caddilac, are all GM

[@timcheek5134]

Check out ford. Gaa motor! Now thats big! 1100 cubic inch!😉

[@michaelkuzmadutton7879]

talal454 no chevy is 😉😉😉

[@69newportking]

Which one is better the pontiac 455 or the olds 455?

[@TheManfromNibiru]

Its one huge terrorizer ! You terrorizing the sleeping sheep out here with this Chevy !

[@alasimoes9403]

Kadilac kit bul! Uau ! Moster! 👏👏👏👏👍😎

[@BentTreeFarmPa]

What about the 502? Forgot that one....

[@hi-fidude6670]

I absolutely love the inperfect American V8s from the 60s and early 70s, the rumble is stunning. So much better than those boring European flat plane V8s that are way overcomplicated.

[@supermrmotorhead7239]

Europeans love to over complicate EVERYTHING and call it "over engineered" and people fall for it

[@pcno2832]

The standard Cadillac engine went from 472 cu. in. to 500 in the fall of 1974, just 6 months after the fuel crisis triggered by the Arab oil embargo. But, it only had a stock 190 HP, down from 210 the year before, because of the catalytic converter added for the 1975 model year. Both engines shared the same block as did the 425 and 368 used through the early 1980s, which was designed in the mid 1960s to be big enough to be bored out to 600 cubic inches.

[@pcno2832]

The 1977 full sized Cadillacs still had a 2.5 inch wheelbase stretch over the Olds 98 and Buick Electra (which shared the same floorpan), mainly to support the added weight of the last big block engine GM offered in a passenger car. It gave the cars a classic, old-money look, despite the space inefficiency. If you look at the redesigned 1993 Fleetwood (now using a small block Chevrolet engine), it appears that those 2.5 inches were moved from under the hood to the back seat, giving the '93 more legroom than the '92, but leaving it looking a little like a giant slug.

[@turbo8454]

The 500 dates to the 1970 model year in the Eldorado.

[@turbo8454]

If this is about on highway gasoline engines, the GMC 707 Parlor Coach engine takes the title followed by the 702 V12 and 637 V8. In diesels, GM made several larger on highway diesels, not to mention the EMD Locomotive engines or the Allison V12 aircraft engines.

[@jm-mi7kl]

that 496 has to be burning nitro to be exhausting that much vapor. it's also got the "nitro cackle."

[@OVshyguy]

Just for a fyi... thers is a 8L big block LS motor but only for the larger trucks so that would make larger then the buick, olds and ponchos 455ci. I think i remember seeing from Gm performance you could get a 602 motor for racing.

[@coreyreynolds9239]

You know you got a bad ass truck when your sitting at a red light and your cam is so damm big your hole truck shakes