Well... Right now I'm on a budget. I can't (safely) go to 3.73's without a new DS, and I'd need a speedcal or tear apart my transmission since I have a '99 GT 4R with the 8 tooth output shaft. Basically, the larger benefit would be the T-Lok rear. (while the 3.27 MIGHT make some SMALL difference, it probably wouldn't even add up to a 100th in the 1/4). I'm not sure if it's due to wheel slip, but since I put the PI engine in, if I'm really getting on it, such as merging with high speed traffic, the rear end feels like it's wagging a little (not much... just enough to feel)... As far as I can tell, all bearings are Ok, and my father said it could be becasue of the power the engine is putting out and the open rear. For $40 for a complete T'Lok rear, even if the T-Lok unit needs new clutches, isn't a bad deal. The T-Lok units I've been seeing go for $60+ alone, no gears or case. Then that case can always be upgraded to 3.73's later.
'95 Cougar - 2002 Explorer engine, 2004 Mustang PTP2 PCM
PI 4.6L 95 XR7 Cougar: [email protected]
2004.5 Silverado Crew Cab/Long Bed/4x4 6.6L Duramax: [email protected]
(Weighing in at over 7200#) on 10/19/2007
Dyno - 446.4RWHP/820.2RWTq
Pulling - 300.9' 3rd place finish 8/2011