LT1 swap, transmission questions

4speed79z
12-01-2002, 11:41 PM
I've been thinking. I know, my friends have warned me about that, but . . .

I thought if I was considering aftermarket fuel injection for my car, maybe I should consider swapping in an LT1. I read through some of the info on this forum and on camaro.net and I still have a couple of questions. First, if I only want to swap the motor to start with, is there any reason that I cannot keep my m-21 trans until I decide what to do next. Also, if I found a good deal on a vette LT1 and ZF trans together, how bad of an idea would it be to try the ZF? If it might work, where can I find specs for the ZF?

Thanks

texlurch
12-02-2002, 01:41 PM
You can use any GM trans behind the LT1, it will bolt up. But, you have to get the correct, externally balanced flywheel or flexplate to match the LT1. I have a T350 behind my LT1 in my 68.
The LT1/ZF would be a nice combo, I think it is about the same size externally as the T56, but has a little higher torque rating. Don't know specifics tho! :cool: