LY6 to 4L60e - wrong flexplate...

[BanditDave]

Hey guys,

I was so excited to have been able finally install my engine and trans in my project car - 2008 LY6 with a 2000 4L60e from an F-body that I managed to miss one "small" detail and I am about to cry now...

When I went out there last night I was getting ready to mate up the converter with the flexplate when I noticed the holes were ever so slightly off...like a 1/4 of a bolt diameter. I also noticed that I had a lot more flexplate holes than converter holes when it dawned on me that I mounted a 4l80e flexplate to the crank. It is pushed out with a spacer but I am not sure if it is far enough out...i.e. fitting into the center of the spacer.

That aside, here is my question and I cannot believe I am even entertaining this, but I have done this in the past - could I elongate the bolt hole the little bit necessary to mate with the converter and if I can are the 4L60e converter holes 120 degrees apart? I would assume so, and I know this sounds ghetto, but I took so much care getting that thing in it is going to be a nightmare to have to pull it out...again.

Let me know if I am crazy here...thanks! Any suggestions are appreciated. I have another flexplate on the way...just really don't want ot have toe pull it again, but will if that is the only way.
Dave

[camcojb]

did you try rotating the converter to the next set of holes? On some flexplates the holes are not all the exact distance from centerline, there's actually two sets of three matching holes for two different converter bolt patterns.

If not, I would not elongate the holes................ I would swap the correct flexplate in there.

Jody

[BanditDave]

Hey Jody,

Yea, several rotations and no luck...kicked myself in the azz last night repeatedly for my stupidity then had the engine out in about 20 minutes (getting really good at it now...haha)

"Correct" flexplate is on the way...we shall see.

Thanks bud,
Dave