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Old 09-24-2007, 05:03 PM
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wtm442 wtm442 is offline
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Join Date: Aug 2004
Location: Squantum (part of Quincy), MA
Cobra Make, Engine: SPF1049 Titanium w/black stripes, 351W with Trick Flow Heads, Tremec 3550
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Olddog

I have a 3:73 rear gear with a 0.68 fifth gear and 15" tires. In fifth at 100 MPH its at 3000 RPM. I do not use fifth unless I'm on highway and all the traffic is doing at least 70 MPH. Its great for gas mileage on the highway, but I'd rather have a 0.82 OD gear.

Here is a great calculator for SPF's
http://www.secondstrike.com/Technical/GearCalc.asp
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Last edited by wtm442; 09-24-2007 at 05:05 PM..
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