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VHR + FD Gear Ratio upgrades - 3.9 and 4.08

Originally Posted by KLRCADI It would not be anywher near that high. I used a gear calculator, and with a 4.08 @ 70mph in 6th would = 3000 rpm. check

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Old 04-20-2009, 02:55 PM   #10 (permalink)
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Quote:
Originally Posted by KLRCADI View Post
It would not be anywher near that high. I used a gear calculator, and with a 4.08 @ 70mph in 6th would = 3000 rpm.

check out the link below for reference
[link]http://www.kabamus.com/garage/gears.html[/link]

I think this would rock, however, the more I think about it this might throw off the SRM more then a flywheel. The SRM system must have a preloaded wheel speed vs gear table. It probably see's wheel speed "x" for gear "y" and revs to rpm "z". The wheel speed will be off by 10%, meaning it would have to rev 10% higher for a given wheel speed and gear. So it might be 10% off on the rev match to engine speed. Then again I might be completely off on my assumptions on how the SRM works. Either way, I can't Imagine 10% off would make a huge difference in smoothness of the system. If you manually heel toe like a pro, I bet most are still off by a few hundred RPM. Anyhow, some needs to break the seal and try this out. It will be killer for NA setups.
nah man. im above 3k cruising at like 85-90. like 4k actually. i will let u know soon what exactly it is. but either way, its an awesome mod. actually, my friend in a 350 just put 4.08 gears in his. we're running tomorrow so i can tell u all how he feels about the mod.
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