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Old 01-09-2013, 02:24 PM
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Originally Posted by vinniekq2 View Post
If you used a 4.56 gear and built an engine that makes power to 6400 rpm and used a 28.5 tall tire...That car could go 120 mph at redline and at 2700 rpm(using .68 O/drive) would be cruising over 70 mph. That an extreme scenario in my opinion. like tech says thats an 11 second car that can cruise to the track.If it spends a lot of time on the track,then buy a trailer for race days,long walk home if something breaks

I know all about this, at first I used a well built 700r4 with it's 3.06 first gear and a set of 4.10 gears which comes out to a drive ratio of 12.55, if you compair this to a th350 and it's 2.52 first gear it would be the same as running a 4.95-5.00 rear gear with a th350, then the 700r4 has a 1.63 second gear which is about the equivilent of running a th350 (1.52 2nd) with a 4.56 rear gear.

this was all in a high 11 sec car, I enjoyed the o/d if I was driving on the highway (which was rare) but I didnt enjoy trying to make it hook. My 60ft times were too inconsistant because I had the hardest time finding that happy medium on take off. Not to mention that 1st gear felt like a "granny" gear. I have since swaped out to a th350 and now have 4.56 rear gears.
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