burbalanche

iTrader: (3)

Im putting a 400 behine an 04/05 lq4 and i spoke with tci and the told me that flexplate 399753 will bolt it right up.can anyone confirm this? Im trying to figute if i need to get the crank spacer and bolts as i dont have the trans yet trying to get everything i need.any help. Thanks

Circle-D

iTrader: (21)

The TCI 399753 has the LS and small GM bolt pattern. And most performance converters will have both the large and small GM bolt pattern. The TCI should come with a pilot extension as well, so if your converter has the shorter style pilot it will extend it to fit the LS crank. If you get a converter with the longer pilot just do not use the extender. Hopefully all that made sense...

Chris

burbalanche

iTrader: (3)

Yes that makes sense.so i dont need to worry about the crank spacer then? Just when i get convertor determine to use or not use pilot spacer correct? Thanks for thr help

Circle-D

iTrader: (21)

Correct, and I like the term pilot extension over pilot spacer. I think it describes it a little better.

Chris

burbalanche

iTrader: (3)

ok n yes true srry lol thanks for the help

burbalanche

iTrader: (3)

ok so i have trans bolted to motor but with convertor locked in trans i have about 2 washer thickness between flexplate and convertor.is that still to much space or can i just put a washer or 2 between the two of them before bolting it all up?

silverls1z28ofdeath

I've always heard 1/8 inch to 3/16. You can use a 1/8 drill bit to get a idea

Circle-D

iTrader: (21)

Depends on how thick said washers are... The drill bit trick works well.

Chris