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Gear ratio decision, 4.1 4.3 or 4.56?

1338 Views 24 Replies 12 Participants Last post by  PHWOARchild
Currently a blast to drive but I want to try dial in the whole system even more, wondering of the 373 are just too mellow for what this combo needs? sometimes at part throttle acceleration it seems a little sluggish.. id like more instant snap if that makes sense..

Currently have 373, and its nice, but i wan to push the street factor the the limit - the 383 doesnt always have the brute low end of the big bocks, so some mods are necessary.

Cam is around 2000-6000 236° / 242°, 288° / 294°, 11:1 (installed straight up), 200/64cc alu heads, 5.7 rods. 850 dbl pumper brawler, Vic JR, 1-3/4 LT headers into 3 inch collector and 2.5 true duals. 373 posi, 2004R, 3k stall..

18-20 initial, vac adv disconnected .. Hei stock.
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Back in the day, I had 4.56 gears in a 57 Chevy sedan with a 292 (283 + .060) and a M20 trans. Revs were almost unbearable on the highway (so be careful what you wish for). But it would put Chevelles and Impalas with larger engines to shame in an impromptu street race. But then there was this 350hp/327 Nova that ruled the roost!😯
 
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