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Got a 96 Impala SS that the customer wants to swap a Ls1 into. My main questions are...what headers work good for this swap. We have some longtubes for the LT1 that have been nothing but burned plug wires...so a user friendly set would be nice. The biggest concern is the tranny. He has built the 4l60e that is in the car, but Im not sure if the LS1 wiring harness can control the older transmission. Are the plugs the same? Thanks for any help provided!
Some camaro long tubes (with light modification) or stock f-body manifolds will work. Trans connector is same as LS1 pinout as they are both 4L60e. Do not use the bolt at the 2 o-'clock position. If you attempt to drill and tap the block, you will hit water. Chk the Imp SS forum.
http://www.brphotrods.comwww.hotrodlane.com i went with BRP for the motor mounts and headers street & performance also has a kit also. but for the tranny one of those guys can help you out with that some guys can still use it they just get the pcm programmed to work with and you would also need a flywheel spacer for it to reach the converter. current performance is a good place to get the wiring harness reworked also speartech does good wiring too. stock drive shaft wont work need a custom one.
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1996 Impala ss,2010 camaro Imperial Blue Met paint,LS3 T56, 4:10 gears,22' Asanti's, 2010 Z06 front & rear brakes,Vortech V-7 YSi-Trim Supercharger with A&A covette kit.
All of the above is true. I hear that the Pacesetter "truck" longtubes fit pretty well. Only have to ding one primary. You can use the older tranny, just follow what everyone else said. Check out my post under Engine Performance at impalassforum.com