HOW TO: Swap in a 3500 (LX9)

[realestdriver]

Originally Posted by Grandamgtblk99

So for that tranny to engine bracket, if you swap over the upper bracket from the 3400 it'll work? I read 2000gagt's thread about his being a pain and taking an hour to get together.

I believe I read the same thread and this is the way I choose to do it. But yes, upper bracket only from the 3400. Instead of three bolts to the tranny on that side, you will not have the lower one from the lower bracket.

[razobladez]

Originally Posted by realestdriver

I believe I read the same thread and this is the way I choose to do it. But yes, upper bracket only from the 3400. Instead of three bolts to the tranny on that side, you will not have the lower one from the lower bracket.

Have you done any dyno work? Im currious.

[2000GAGT]

correct, that tranny to engine bracket has two individual parts, the lower part no longer matches up so you can only use the upper part which still works and helps the process. And what was a pain for me was just getting the engine dropped down and matching up the holes to the tranny to mount on the bell housing. of course when i did it i was in a one car garage and it was 40 degrees and raining.

I do have the PDA dyno software and it definitely shows a better power band in the higher RPM range.

[realestdriver]

Originally Posted by razobladez

Have you done any dyno work? Im currious.

Not yet, I got some more work to do first. Also, its not too motivating when your friends are running 12 second street cars and I'm still working on the GA. My car's powerband is rocking and torque gives me a nasty little burnout.