Well I have a 2000 model LQ4 at the machine shop as we speak, its having to go 60 over, so that will make it a 376 correct? I have read alot about the older cranks being longer than the newer ones, and id have to change it out to a 02-up so that i could bolt a 4l60e behind it...question is, im wanting to do a th350 swap behind it, so could i use the longer crank to eliminate having the spacer for the th350/400 swap? thanks guys

 

Yes the longer crank is what you want for a th350 you will just need a different flex plate. Neil Chance makes an excellent converter for LS1 to TH350-400 trans and its not very expensive.

 

I have year block with the long crank bolted to a 4l60....

TCI has a flexplate that will work for your 350trans though

 

How'd you do it, custom torque converter?

 

Thats how I did it...

 

well i dont have the balancer or the flexplate off the longer crank, but i do have the balancer, flexplate, and newer 6.0 crank out of a 04, just gonna use that, and the adapter to put a th350 behind it, thanks for the help fellas