The limit is five liters or 305 but if the BxS must be prod. based it would be the old 4.00x3.00, as both the factory Fords and Chevies used.
I wonder what the Chevy based Holdens are using, as when they used a genuine Holden that five liter had a different BxS unique to Holden; while they are now using an LS based engine, I wonder which BxS they are using.
In the Trans-Am before they put a lid on the pot, the 310-311 inch entgines most common in the nineties had alloy valve trains, as large a carb, but not a Domnator as possible.
They were turning into the ten thousand range, and horse power was always listed as only 650+ HP with no mention of real numberrs attained, plus the comp. ratio was also open at that time.
Some of the T-A engine builders who were also NASCAR builder were experimenting with comp. ratios as high as 17:1 with 15:1 being not out of the ordinary.
The street quasi-race 302 engines from both Ford and Chevy were never torque monsters but whereas one could leave the line with a Ford engine with no dramatics, the Z28 302s, even with a idle well over 1,000 rpm were a ***** to get going.
Bob
|