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im new to this sight and im not sure how to post a new thread but i am thinking about buying a lt1 trans am.. the car has 156k on it but is really clean. i want the car to break 12s by this summer any suggestions on what to do to it? thanks pm me the info it will be greatly appriciated
In your situation I would have Longtubes or atleast MAC mids free flowing exhaust. New valve springs, NSA1.7 rockers on 7/16 studs w/ flat plates and hardened pushrods,255lph fuel pump,Cold air or an Ls1 lid set up,3600stall,3.42 gears, tune,MSD digital6 and a NX 150 shot......ET streets and go have fun!
When I had only exhaust no cats, cold AIR,150 shot, dragradials and No tune...... I went from 13.9na to 12.2 on a 150 shot back in '03 and now my best with Longtubes,tune,1.6rr and 4.10s added to the above I run 12.9na and 11.3 on the same 150 shot. My Lt1 has seen tooooooo many bottles of N2O Nitrous and Lt1s work very nice together.
If bothering to put a kit on I would go ahead and be prepared to run 150hp through it, go ahead and start smaller work your way up learning and tuning, but with decent tune a 150shot is easy and reliable on an LT1, a lot of guys have gone 175 and some go higher, one wingnut with a stock shortblock Impala successfully did 2 stages for a total of 280hp. Most endup scattering the motor when they aim high like that and I have seen a few cases where with stock(unported) heads guys didn't gain anymore past 175 because the system just got so choked.
I would put gears in it, will make it nicer to drive all the time.