I have an LS3 that I am putting a 4L80e behind. What flex plate and spacer should i buy for this swap. Is there a way to do this other than a spacer or? Trying to gather parts to throw this LS3 into my gbody.

 

There is a sticky at the top of this forum section that details flexplate/converter options.

Yes you can do it without a spacer.

You can get a custom converter with longer pilot, and a bolt pattern to match your stock flexplate
you can use a crank pilot adapter sleeve and then "hog out" the bolt holes in your flexplate

Go read how 999 other guys have done this...it's quite simple

 

Thanx for the help, yes i just ran through all the stickies. Seems like most of the info is Ls1 based. Will this e bay item allow me to do what I am after. I need the flex plate anyways. https://www.ebay.com/itm/Flexplate-f....c100040.m2060

 

Take whatever info is out there for the LS1 and use it for your ls3

Same crank length
same bellhousing pattern