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Old 08-07-2019, 05:54 PM   #462
Dave-ROR

 
Drives: A few
Join Date: Oct 2017
Location: Brandon, FL
Posts: 854
Quote:
Originally Posted by oldman View Post
http://www.tremec.com/anexos/TREMEC_TR-9070.pdf


The Z51 is a road race trans it may have closer gear ratios and hence needs a steeper final drive to offer the same overall performance… not MORE performance
3.24 x 3.62 = 11.73 and 3.14x 3.8 =11.93 that is sub 2% right??? or 1 MPH difference per the same engine RPM...


5 HP is for a muffler valve IMO
Most likely it has the same ratios besides the final drive. The FD difference is all GM has mentioned for it as well as far as I've seen.

And there would be zero reason to change ratios to offset the shorter final drive. Literally no reason. If they did so why bother changing it at all...
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-Dave
HPDE/DD: 2018 Camaro ZL1 1LE || HPDE/DD: 2015 Subaru BRZ ||Tow Vehicle: 2004 GMC Sierra 2500 8.1L || Weekend toy: 1994 MR2 Turbo || The other weekend toy: 1993 MR2 Turbo || Track car: 1998 Integra Type-R || Race car: 1996 Integra GS-R || New race car build: 1992 Honda Civic Hatchback

Too many cars.. never.

Last edited by Dave-ROR; 08-07-2019 at 06:50 PM.
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