Conversions & Hybrids - Transmission crossmember?

I'm putting a LS1 and 4l60E in my 94 formula. I know the LS1 crossmember does not bolt in so what I was wondering if I need a LT1 auto crossmember or can I use a manual one? I have a manual one but my auto one got lost and ofcourse I have a LS1 auto one also.

You need the LT1 auto one and grind the hole out for the mount. Check the link in my sig for a pic. That is using the LT1 4L60E so using an LS1 trans it may line up a bit differently.

I would use the LT1 Auto Cross Member..and you are going to have to extend the slot in it about 1" to the rear..maybe more. The LS 4L60E Mount sits a little farther behind the LT 4L60E Mount on the Tranny.

A T56 Crossmember would be too far back.

Here is an important question..are you using the LS K-member and Motor mounts?

Yes i have a stock LS1 k-member with motor mounts

Ok..just checkin..the Conversion Mounts kick it back about 3/4".

Go with the LT1 Auto Cross Member..you will probably have to extend the slot.

Ok I bought an auto cross member oblonged the hole put it in and well my trans mount is sitting behind the whole crossmember!! talk about bad luck figures it would be off.. any other suggestions lol... you say the manual one is back further??

Weld a perch on the rear of the stock crossmember

Weld a perch on the rear of the stock crossmember

Thats the plan but I just really hate having to do that

How come? You put a non-stock engine in the car, you have to fudge some things

How come? You put a non-stock engine in the car, you have to fudge some things

:D Oh I'm fudging a few things here and there

You should see what Ive got in store

:D