Quote:
Originally Posted by 68bird400HO
True, that is another dimension, but, I bet most of these cars running the faster times are close. I think a bare bones A-body is close in weight to a bare bones F-body (3,500 - 3,600 lbs). The 67-68 birds may be a bit lighter (maybe in the 3,400 lb range) while the SDs are probably a tad heavier. It seems that the RAII/RAIV cars, on top of running 12:1 compression, need to run 4.33s or lower to get those times while the HOs are close with 9.9:1 compression and 3.55s or 3.73s gears.
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We weigh all the cars and list them in the race results. Unfortuanetly, the last two years the track scales weren't calibrated and way off (700 lbs +/- heavy), so left them off the results tally.
The T-37's are in the 3600 - 3700 lb. range, the 69-72 GTO's are in the 3800 - 4000 lb. range, the 1st gen Birds are in the 3400 - 3600 lb. range, and 2nd gen Birds are in the 3700 to 4000 lb. range depending on options, model, and driver girth.
You are correct with the gears, the quickest of the engine types run: 455 HO/SD - 3.73 gears; RAIV - 4.33 gears; RAII - 4.10to 4.33 gears.
Dennis