Thread: Which is better for my Cobra: Tremec .62 or .82 OD?
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Old 11-01-2009, 07:20 PM
Jim Vander Wal Jim Vander Wal is offline
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Join Date: Sep 2002
Location: Grand Rapids, MI
Cobra Make, Engine: FFR Challenge Car, RDI aluminum 427w
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OK, I'll go against the grain.

I have the .64 with 3.27 gears. I like it on the highway as I cruise at 2,200 @ 80mph with 315/35/17 tires.

Where I don't like the .64 is 55-75 cruising backroads, the RPMs are too low and 4th forces the RPM range too high for just cruising.

My use may be different than yours. I run lots of highway (hours/days at a time) and find that 2,200 is at the bottom of my usable RPM range. I also play on the track and find that I can run to 157 in 4th if needed so I don’t shift to 5th on the track.

I've looked at the .82 and run the numbers and just don't like the higher RPMs for long distance highway cruising.

There has been a new post about putting the T56 into a SPF. This really interests me as it offers the best of both worlds.

Jim
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