Tremec 3650 transmission??

JoshBiz · #1 (**permalink**) 10-20-2007, 05:17 PM

Hello,
Stupid question but will a Tremec 3650 fit on a FE 390 with about 450hp? Or what transmission would be best for that motor?
Does anyone have a transmission that they would like to sell in the Atlanta area (or ship to)?
Thanks for the info again,
Josh

Naumoff · #2 (**permalink**) 10-20-2007, 06:13 PM

Found this info. Might be helpful. If the Mustang guys use the trans with all their power adder I can see why you couldn't use it with your 390.

TR-3650 used in 2001-present Ford Mustang GT's
1st: 3.380 :1
2nd: 2.000 :1
3rd: 1.320 :1
4th: 1.000 :1
5th: 0.620 :1
Rev: 3.380 :1

Note that in the other TR-3650 applications, the gear ratios are the same with the exception of 5th gear.

Recommended Oil and Fill Capacity
TREMEC engineers have recommended Texaco-Havoline Dexron III/Mercon Non-Synthetic ATF. The most recent Ford owner's manuals specify 3.17 quarts of a non-synthetic Mercon ATF. There has been a significant amount of confusion regarding the proper capacity and proper type of ATF for the TR-3650 which may have a correlation with a rather large number of complaints about notchy shifting, shift "nibbling", noisy synchros, and grinding gears.

I don't like the gear ratios. First is two low and the over drive is to high.

What rear gear ratio are you using? Most Mustang GT have a 2.79.

What RPM range does your engine make its power in?