its most likely your drive shaft.. but i would still check tire balance first... my old steely would vibrate after 80 and get really bad around 90 then i put the ls1 in there and it was smooth as can be... i have one if you want it we can make a deal... i have a moly one to use with my rear.... but the aluminium is on the ca rright now because the stock yoke is smaller than the other one and i didnt want tranny fluid to leak out on first startup... if you come and help the car idle then i can take it off and move on to the next step of my project but i need it on for now till i get it running steady
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
Last edited by transmaro93; 11-23-2009 at 08:39 PM.
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