
10-30-2015, 08:25 PM
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CC Member
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Join Date: Nov 2014
Location: PORT LAVACA,
TX
Cobra Make, Engine: BD 1445 Coyote TKO 600 3.91
Posts: 109
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Not Ranked
.68 is the #
Hello
I recently had to make this decison as well.
You have heard a lot of good info
Here is what I found
Coyote Motor with Lund tune
Rrunning 315 30 18 tires in rear
391 rear end
Tremec 600 with final drive .68 (NOT .64)
I chose this as I plan to drive the car and make some nice long cruises. At 80mph I am running about 2750 rpms.... with nice fuel economy.
The final gear I found was actually a .68 in my Tremec 600
See this part # https://fordperformanceracingparts.c...tKeyField=7618
Here is a calculator!
Engine RPM Calculator
Good Luck!
__________________
Life begins at 6000 RPM's
 
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