but general consensus on here is a good 3600 for good gains and drivability (some say 4000, but I have not riden in one with that) GL 
cam, heads, and intake manifold also 
What to do next?
What to do next? Idk what I should do next. I have ls1 01 trans am a4. 3.73 gears tsp headers and y pipe with slp lm1 exhaust lca with relocation brackets. The question is what should I get next I'm out of ideas.
Plenty of options for you. If you just want to stick to simple bolt ons, you could do a lid and ported throttle body, or a ram air kit. Since you're an a4 you could do a high stall torque converter and trans cooler. Or just skip ahead to heads and cam.
Personally I'd suggest the high stall torque converter next.
Personally I'd suggest the high stall torque converter next.
Last edited by 02'Andy; Dec 13, 2012 at 07:40 AM.
With your 3.73 gears, a 4000 stall would drive better than my 4000 stall does on 3.23s, but it depends on what you want to do with the car. If nitrous is in your future, I'd do a 3600. I love how my car leaves like a monster at WOT with the 4000, but the driveability isn't as good. I only got a 4000 because I'm planning on doing 3.73s and a semi-aggressive cam.
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