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Old 07-17-2009, 10:31 PM
NZGTRA17 NZGTRA17 is offline
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Re: GTRA 347 Conversion Sump Questions?

Quote:
Originally Posted by panozracing View Post
is there a reason nobody looks at the 351 stroker packages? Is it weight? Is it that you have 302 parts and I had 351 parts?

Bit of both for me really Brian. 351 based setup would probably add at least 50+ pounds to the car, it would raise the C of G and I would have to start from scratch.

If I had started out with a 351 based car, I would absolutely stick with that for sure. Starting out with the 302 though has made me look at ways of idealising that package instead.

I am not able to run slicks for endurance racing here either so having 550 ftlbs of torque would be wasted as I would not be able to get it all to the ground. This is another reason why I have looked at a big inch 302 base. I figure for my car to be an outright contender in endurance races here, 500hp and 460 - 480 ftlbs of torque will do the job. I beleive that I can reliably extract this from the likes of a 3.4" stroke x 4.155" bore Dart blocked 302 = 368 cubes. Modelling of this combo shows around 520 flywheel hp and 490ftlbs of torque all below 6200rpm.

Even at this torque/hp level I expect I will need to move up to say a 275 or 315 rear (DOT) tyre to last the required distances.

If I had an unlimited budget (and I dont, especially not now with a 6 day old baby in the house!!), I would go for an alloy blocked dry sumped 351 based engine and marry this to a sequentially shifted 5 speed Jerico. I would probably convert the rear end over to an independent set up as well. This combo would be unstoppable in our endurances series. Now to find a well heeled sponsor...............!!

Interested to hear others thoughts on their ideal setups.

Kel.
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Kel M
Panoz GTRA #17
New Zealand
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