I am planting an LS1 in my b-body car. Will an LT1 4L60e tranny bolt up and work with the LS1? I have an LT1 stall too, will these both work behind the LS1?

 

It won't work... Input shafts are different.

 

It'll work just like the conversions to the th350's, th400's. Same thing, you need a '98 flexplate and a spacer. You'll still onlt have 5 bolts holding it in place but it's just like a th350,400 swap.

 

I keep hearing conflicting stories about this swap. If I can use the trans, how big of a spacer do I need for the tranny and where do I need to place the spacer?

 

Where are you hearing conflicting stories, you have two posts here. I have seen this question asked so many times here I can't believe you cannot find and answer.

As long as you use the LT1 4L60E converter it bolts up just like a th350, 400, 700, etc. OR you can get a custom built converter made for an LT1 4L60E with a crank pilot for an LS1 crank.

You need the spacer GM part# 12563532 (put that in the search box here).

Spacer picture.

Non sponsor site so I won't put up the name.

Here is more info I put that part number in google and found all this, and theres more.

https://ls1tech.com/forums/showthrea...ybrid&t=262622

http://www.crateenginedepot.com/stor...2-P1343C0.aspx

http://ls1racer.com/phpBB2/viewtopic...dc7707bd565924

http://www.babcox.com/editorial/ar/eb20421.htm

 

Along with the spacer - are longer bolts needed also ?

 

Yes, thats why they're in the picture. They all come as a set I think.

 

what about the electronics?

 

bump...