What would top flight nasa st1 vette motor consist of?
12-07-2008, 09:44 AM
#1
Drifting
Thread Starter
What would top flight nasa st1 vette motor consist of?
Down the road, I would like to build a second more powerful motor for the Rolex GT C6 prep 2 chassis we are building. This would be for SCCA/V8 StockCar. What would be typical components, heads, compression, cubes for these type motors? I have heard some make like 575 rwhp, if so that is gettin it done.
thanks
Bosco
thanks
Bosco
12-07-2008, 11:11 AM
#2
Burning Brakes
I have two engines in C5's running in TTU/ST1 here in Arizona. Both are putting 580 or more to the wheels.
My engine:
454 cid (4.187 X 4.125)
Heads, unmodified LS7, CR = 12.5:1
Wiseco pistons, Callies crank, Scat rods
LS2 block with Darton dry sleeves.
Cam; 254/268ish, 1.8 LS7 rocker arms
Unmodified LS7 intake manifold, 90mm T/B
Aviad dry sump system
American Racing Headers, 1-7/8" primaries, 3" X pipe to the axels, 2-1/2 catback w/ 8" Flowmaster mufflers.
Pete Creek engine:
442 cid (4.130 x 4.125)
Heads, L92 CNC ported by West Coast Cylinder Head, CR = 13:1
Wiseco pistons, Callies crank, Scat rods
LS7 block w/ .005 clean up
Same cam as above with 1.7 L92 rocker arms
Unmodified L76 intake manifold, 90mm T/B
Aviad dry sump system
Ebay special Headers, 1-7/8" primaries, 3" full length X pipe exhaust w/ 8" Flowmaster mufflers.
Both cars hold NASA TTU track records here in Phoenix. Both cars weigh right at 2980# empty. Might need to ballast in order to stay in ST1. Pete dyno'd at 582 rwhp, I have not dyno'd my car, but I have a very slight 'on track' power advantage.
Engines build by Shirl Dickey Racing, Aguila, AZ (me). Good luck with your project, post some pictures.
Shirl
My engine:
454 cid (4.187 X 4.125)
Heads, unmodified LS7, CR = 12.5:1
Wiseco pistons, Callies crank, Scat rods
LS2 block with Darton dry sleeves.
Cam; 254/268ish, 1.8 LS7 rocker arms
Unmodified LS7 intake manifold, 90mm T/B
Aviad dry sump system
American Racing Headers, 1-7/8" primaries, 3" X pipe to the axels, 2-1/2 catback w/ 8" Flowmaster mufflers.
Pete Creek engine:
442 cid (4.130 x 4.125)
Heads, L92 CNC ported by West Coast Cylinder Head, CR = 13:1
Wiseco pistons, Callies crank, Scat rods
LS7 block w/ .005 clean up
Same cam as above with 1.7 L92 rocker arms
Unmodified L76 intake manifold, 90mm T/B
Aviad dry sump system
Ebay special Headers, 1-7/8" primaries, 3" full length X pipe exhaust w/ 8" Flowmaster mufflers.
Both cars hold NASA TTU track records here in Phoenix. Both cars weigh right at 2980# empty. Might need to ballast in order to stay in ST1. Pete dyno'd at 582 rwhp, I have not dyno'd my car, but I have a very slight 'on track' power advantage.
Engines build by Shirl Dickey Racing, Aguila, AZ (me). Good luck with your project, post some pictures.
Shirl
12-07-2008, 11:25 AM
#3
Drifting
Thread Starter
Thanks, Shirl.
Those monsters must make close to 600 ft lbs torque!
I will probably build something like a 364 ci, L92 head, motor to fit into SCCA GT-1 without having to add weight to the car.
SCCA GT-1 rules say LS with stock plastic intake at 2680 lbs and that would be with driver. I don't think we can get lighter than about 2800 with driver. Should be able to get 600-625 flywheel hp though.
Those monsters must make close to 600 ft lbs torque!
I will probably build something like a 364 ci, L92 head, motor to fit into SCCA GT-1 without having to add weight to the car.
SCCA GT-1 rules say LS with stock plastic intake at 2680 lbs and that would be with driver. I don't think we can get lighter than about 2800 with driver. Should be able to get 600-625 flywheel hp though.
