RACER: 1985 March-Buick IMSA GTP In-Car at Monterey

Ride inside the March-Buick IMSA GTP car that sat on pole for the 1985 24 Hours of Daytona as pro racer Ken Dobson taps into 800-plus horsepower around WeatherTech Raceway Laguna Seca.
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[@Thraser999]

Man, that acceleration on the straights is just so much insane

[@RenanBorges96]

If you pay Attention, you can almost hear The turbo spool.

[@hertzwave8001]

you can, its not almost

[@KyleP133]

@@hertzwave8001 whoosh...

[@lukemaney645]

I saw the GTP's run at Heartland Park in 89', the Nissan of Brabham was in a league of it's own, nobody could touch it, not even the Jags...those were the good old days.

[@Afistfulof45longcolt]

Love that sound! v6 turbo !

[@alexanderbroom9915]

That second lap was a very speedy 1:27.

[@javierrosadojr.6379]

that sounds mental

[@repetitivemotion]

I watched this car do battle at Road America it was epic

[@anels9]

Great footage! Hopefully there's exterior shots of this

[@MidgetRacer8192]

a little late, but..... racecarsdirect.com/Advert/Details/106321/march-85g-imsa-gtp

[@Bruhop60]

Insanely fast car around Laguna Seca.

[@charlesfitch4962]

Badass car and the driver ain't too shabby either!

[@rainbowrailroadcrossing7798]

The 3800 series along with the one inside the Buick GNX hits different

[@Stoppahpowah]

What a treat. Thanks, racer!

[@sanigene]

My ears are ringing....in the best way possible!!

[@karlfritz47]

Definitely

[@mvpatrone]

Definitely thought there was going to be contact at 4:22

[@ericdsrracer]

Me too.

[@shaadydog1]

Was that Adam I drive a Corolla

[@cmccarthy]

Why does this dinosaur sound so good and modern F1 cars sound like a dishwasher?

[@jlalbee]

I remember this thing. Crazy, stupid fast but not reliable.

[@cbr3220]

first of all, i did not expect the racer channel to upload something spectacular like this. second, correct me if i am wrong but, was the buick engine was the same one used in indycar?

[@aries749]

Yes, it was based on the Buick-Indy block. I believe they typically ran a bit more displacement & a bit less boost in the sportscars, compared to how they were run at Indy. I'd imagine that was to try to make them last for an enduro length race & some differences in the regulations. Pretty sure the sportscar motors ran on gas instead of the methanol used in the the indycar application. I remember the GTP Buick's popped quite a few motors back in the day, though. Wicked sounding car and I always liked the look of the the March chassis. Gotta love how it breaks the tires loose on the boost! GREAT VIDEO!

[@cbr3220]

Sweet!

[@glennmarston]

I'd hate having to maintain that gearbox. Driver made a real crunchfest of it. I enjoyed watching him drive, and the video, and power and acceleration though.

[@saleemwaheed9956]

Glenn Marston I hear ya about that gearbox! GTP's love eatin boxes! But she's a beauty and really quick!

[@tokyosmash]

It’s a dog box

[@JonBanquer]

It has no syncro's to wear out. That's how it's meant to sound.

[@carsandwhisky2002]

Absolutely ludicrous torque. He catches and passes that 600+hp trans am car at 1:09 like it dropped 4 cylinders

[@IssaBendeck1]

what a beauty music to my ears wonder what would it do at nurbergreeng, pure love for that sound i can hear from far away the sound of a american torquier motor not that gey buuubububu f1 sound that i heate so much

[@AxelP33]

Was it odd fire ?

[@saleemwaheed9956]

GTP Goddess!

[@highwaltage]

v6 3.8L buick?

[@CatDaddyTuning]

Apparently these Buick engines would rip the mains right out the bottom of the block

[@01Chenti]

Is the mic on the turbine inlet!?

[@Stoppahpowah]

Marshall did that on a 962, wouldnt be suprised if this was the same.

[@matthewscarpetta]

this might sound silly... do these cars or race cars that have a turbo charger run a blow off/recirculation valve?

[@supersevenn]

back in the day most did not. that is why you can hear the 962s chirp so much in original configuration

[@matthewscarpetta]

@@supersevenn what about today?

[@ironguts1097]

@@matthewscarpetta probably not. The blow off valve has gone away mostly

[@AxelP33]

No proper racecar uses bov's. Off throttle surge is harmless. Theres no power on the turbine side, and not much flow rate at the comp side so not much load in the end. In racing you tend to avoid component that can be problematic, it could get stuck open or leak and you lose boost .

[@groovymotion5706]

The 2 that did a thumbs down were the ones that wiped out at 4:20

[@andrewspaltman]

I love how he keeps looking in the mirror to see if there is someone else there.....no chance anyone is keeping up with this thing !

[@PatrickMcTie]

Epic!!!!

[@IssaBendeck1]

that is the famous Cbody that its been in too many engines and trannyes thats why i love so much the ultima gtr its one of the best alltimes body for a lemans racer

[@lukemaney645]

He had zero competition on track this day 😂.

[@buschenterprises4788]

sounds a lot like the Nissan GTPzx turbo from the same time

[@mannyflash10]

I can almost hear the transmission

[@Silli999]

I can hear it all but brains getting overloaded, just too much yammy for petrolhead getting taste of heaven.

[@chrismiller5173]

anyone else think it's strange to watch a racecar that actually uses a clutch pedal?!

[@KyleP133]

This car is clearly powered by a turbine using a v6 for forced induction.

[@weesky2000]

Chuuuuuuuu ChuiiiiiiiiiiiiiChuuuuuiiiiiiiiiiiiiiiiiiiiiii

[@shaadydog1]

Cant understand why they chose this unreliable v6 when the sbc was so well developed by this point and 2 more intake and exhaust valves.

[@MidgetRacer8192]

because this was better, given the rules at the time.

[@shaadydog1]

@MidgetRacer8192 Maybe you misunderstand, I was not talking NA v8 but something along the lines of the Yunick Indy car turbo V8 in 73-74. That was close to 1000hp back when you didnt have the aftermarket support nor the engine management you did in the mid 80's. Supposed to have been 1000hp or more in qualifying trim, biggest problem was fuel delivery. That wouldn't have been the case here. This v6 while powerful proved unreliable.

[@MidgetRacer8192]

@@shaadydog1 no, I understand... the rules still favored the other engines over the SBCs. same reason F1 went away from the DFVs about the same time. and reliability may have been an issue, but once that was sorted, the normally aspirated cars weren't as competitive. while an all-out SBC build can make more power, they plain weren't allowed to have that level of a build.

[@shaadydog1]

It was governed by weight vs displacement. In 85 a 3.5 turbo V8 would have been legal. Only thing I see here is this correlated with the USAC program so it may have been “cheaper” and part of their testing/development.

[@supersevenn]

acording to one of the drivers that raced this car, they had very very few engines problems. The problem with the car was the rest of the car that could not handle the power such as the turbos, tranny, drive shafts, etc...small block chevy NA would never make enough power to be compettitive and they could not turbo the big displacement