on my high comp l36 with headers im only knocking 3.6* with a 3.5 untuned.
Bad idea... People suggest a tune for 3.4 pulley's and even more so a top swap, but you're running top swap with pulley drop? Either way, i'll bet its fun.
The OP has a GTP...not a top swapped GT...just Fish has the top swap.
Don't melt your exhaust valves!!! Any KR is bad. I bet I will run faster in the 1/4 with my 0*KR on 3.8 than my knocking 3.4. I need to adjust the timing but don't have a tuner.on my high comp l36 with headers im only knocking 3.6* with a 3.5 untuned.