Quote:
Originally Posted by Ace23
The 3:73 would be for my current setup until I did the big block swap in the future. I run 315/35/17's and would probably use a 3.31 with an OD 5th with a big block. My current setup turns 2700 at 70mph and that is annoying. The .64 5th would give me 2000rpm at 70mph and with the torque of a big block that would be a great cruising rpm
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I would check with your engine builder regarding how well your big block will like 2,000 rpms. Depending on the cam, it may not like it at all. With a mild cam that may be k, but an aggressive cam is going to want a higher rpm to run right.