just had a customer bring me a 71 240z with a SBC and lt1 6spd. he decided that he wants to put an ls1 in it so my question is, are there any flywheels out there to use the lt1 clutch assy, and bolt it to an ls1 so no input shaft changed/bell housing mods are necessary.

thanks

Blake

 

lil help guys?

 

could you not use an lt1 splined disc with an ls1 flywheel and ls1 pressure plate?As long as it is the same diameter clutch disc and the input shaft is the right lenght and diameter.

 

I believe that the Imput Shafts are a different length..that might be the kicker there..

 

He would be better off, in the long run, to sell the LT1 T56 and just get one made for an LS1. That way, you know everything is going to bolt up and work right.

 

i have both transmissions so i took some measurements:

LT1 t56:
input shaft length - 5.31in
splines - 26
input shaft dieameter(roughly) - 1.19in
bellhousing depth(to machined surface on front plate) - 5.5in

LS1 t56:
inputshaft length - 7.25
splines - 26
inputshaft diameter(roughly) - 1.19
bellhousing depth (to machined surface on front plate) - 6.25

hope this helps...

 

yea you cant do that...you need a ls1 specific tranny...not worth the trouble....

 

He's right. There are no flywheel/clutch set-ups made to convert a LT1 tranny to work with an LS1. The LT1 T56 can be converted over to LS1 use though. You would need a front plate, input shaft, and belhousing.

If the LT1 T56 is in good condition I would probably sell it and buy a LS1 T56. Both versions seem to command the same prices so the out of pocket cost wouldn't be too bad.

Re'

 

...or buy a trashed ls1 t56 and switch the front plate, bellhousing and input shaft onto the lt1 style t56...