Twin engine GTP nascar first startup and more...

[twinv6gtp]

Man this is going to be a beast...
I took it for a short drive. the road are dirty (sand) so I couldn't really do anything real crazy. But so far I love the way the chassis feels. It is very stiff and feels very nimble. Weight distribution as a twin engine is nearly 50/50
With both engines there as shown in this vid we are at 2800lbs with driver.
There is some stuff missing up front and body kit weights a little too. But overall it's super light. Fully dressed up will be 2500lbs as single rear engine. Or 3200-3300lbs as twin engine. That is over 1100 lbs lighter than the GTP !

It feels like a monster. I was just on all season tires and no traction. but I can tell the small things done to this otherwise stock L67 engine made a big difference. Electric water pump, no balancer shaft ST4 camshaft, stock refreshed head etc... It hits the 7000rpm limiter like nothing in 2nd gear (on the vid)

The Converter feels a little tight on the 4t80e but I expected that. We'll deal with it, it's better than a stock converter that's for sure.

Click to read more...

 

[GTPpower]

Holy piss this thing is gonna be quick.

 

[twinv6gtp]

It seems to perform above my expectations. The frame is super stiff.
You can jack one corner and no noticeable distorsion. Rear engine motor mount config is superb. No movement yet not solid mounted. All poly bushings (ZZP).

The GTP was harsher when going into reverse at full line pressure.

Seems like the motor wants to rev much easier than before when it was 100% stock.

 

[Spivitz]

Definitely going to be fun!

 

[SleeperLS]

Fuck. Yes.

 

[Euro]

OMG THAT IS GOING TO BE AWESOME

 

[nos4blood70]

You're my hero.

That thing sounds great!

 

[RICH17]

This thing needs to come down for a show!

 

[10sec]

Yea, man does that thing sound good. I want one.

 

[syP]

doggie diner?

 

[bikrboy128]

amazing. well done! i like the look of it better without the body panels though. it's like a redneck ariel atom

 

[ZephTheChef]

This build makes me so jealous. I have a Festiva that I already fitted a 3800 into the back of after being inspired by your GTP build. Gotta get back to work on that bad boy and get the front engine in and wired. I was expecting similar weight...maybe 3200lbs. Too many projects going on all at once though, I'll probably be a year getting that done. Make some more videos to keep me motivated!

 

[Mike K]

How to make a 3800 sound good in one easy step:

Add a second 3800.

 

[twinv6gtp]

amazing. well done! i like the look of it better without the body panels though. it's like a redneck ariel atom

Me too...

But redneck is not true. Lots of engineering behind thus project. Redneck would be heavy...

We could have done a nicer design but we knew we would have a body over it...

 

[TCG Member 5219]

This is some shit you need to contact the Roadkill guys with. I'll bet it would make an episode easy.

 

[twinv6gtp]

More testing on rear setup. Running 20 psi of boost so far, it's making big power already. There is too much sand to hook up or make a good burnout but so far I have a good feeling with just one engine it will easily beat the times of the twin engine GTP on a sticky track. With two engine this thing will be crazy !

 

[jdredd]

Reminds me of the dune buggy 3800 jobs.

Just run it with no body panels Looks all Mad Max like then....

 

[twinv6gtp]

Reminds me of the dune buggy 3800 jobs.
Just run it with no body panels Looks all Mad Max like then....

I might go down the track with one engine and no body panel. I'm just a little worried about the lack of weight up front. Apparently my wheels came off the ground abou 2 inches on one run, but I can't see it on video. I think I will make a set of wheelie bars for it just for the occasion. I have to get some downforce in front.

At 2400lbs and 600HP+ it should beat the Twin Engine GTP time if the track is well prepped.

 

[jdredd]

I might go down the track with one engine and no body panel. I'm just a little worried about the lack of weight up front. Apparently my wheels came off the ground abou 2 inches on one run, but I can't see it on video. I think I will make a set of wheelie bars for it just for the occasion. I have to get some downforce in front.

At 2400lbs and 600HP+ it should beat the Twin Engine GTP time if the track is well prepped.

Fiero style basically.. buddy of mine with a MP112 setup Fiero can lifted the
front tires a few inches on tiny stock sized street tires.

Just get a solid block of iron the strap to the front

 

[twinv6gtp]

Fiero style basically.. buddy of mine with a MP112 setup Fiero can lifted the
front tires a few inches on tiny stock sized street tires.

Just get a solid block of iron the strap to the front

I have about 200lbs in Lead ballast (stock car stuff). I was thinking of mounting them in the bumper area to help in case. I could progressively remove them during the day if the car is stable at speed. Just worried wind will catch under the car and flip it on the top end. I should trap mid 140s + at that weight with a single engine. That's if the car isn't too much of a brick areodynamically.

 

[twinv6gtp]

Also remember this is a 117" wheelbase. It's a very long car and the engine is is front of the rear axles. Maybe it won't lift too bad. Just a set of little wheelie bars would do the track. I still need some downforce on the big end just in case.

 

[SleeperLS]

Sounds nasty! I love the onboard shots...looks super squirrelly.

 

[Turbocharged400sbc]

you could start adding anti dive/squat to the lower control arms.

move the front LCA's front heim down and the rear bushing up, opposite on the rear

 

[twinv6gtp]

you could start adding anti dive/squat to the lower control arms.

move the front LCA's front heim down and the rear bushing up, opposite on the rear

Hard to tell how the suspension is reacting there is not enough traction. I will try to find a decent spot to hook. So far it's not squatting at all. But if I test rear engine, I do need some squat or I will waste the slicks.

 

[99PONTIACGP]