Quote:
Originally Posted by tpepmeie
Yes, that's what's in my 427. Not big enough. I need +20 degrees, and +.030" lift to breathe >7000 rpm. BUT, that's with a 4" stroke. Your mileage may vary. What stroke are you running, and what rpm do you want to make peak power?
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Hi Todd
Theoreticaly we could go according the racing rules up to 545 cui. But then we would have to put additional weight into the race car.
Another point is the piston speed. With a 4 inch stroke or bigger it's hardly possible to go up to 9'000 rpm's.
So we think to go with a 4.075 bore and a offset grind stock crank with a 3.85 stroke. The power peak we hope to get somewhere in the 8'500 - 8'800 rpm range.
About mileage and idling we don't care much. What count is the power output with a useful torque band.
At the moment we drive with the 350 cui motor with ported heads and stock cams and 2 manifolds with individual runners. The LT5 like very very much to breath with the runners.
We look for the ideal cam combination and many other components to make the engine turn high.
Sam