waxenate

iTrader: (5)

I am swapping a 2000 LS1 into a 95 Z28. I know that the LT1 flywheel will only work if I use a spacer to line up the teeth with the starter. My question is what if I used a flywheel from a 2000 Z28? Any issues bolting up to the older 4l60E tranny?

Thanks

gofastwclass

iTrader: (2)

The older flywheel will NOT work - the bolt patterns are incorrect.

The LSx flywheel is what you need with the spacer after the flywheel and six longer bolts. The bolt holes will have to be elongated for the torque converter with a die grinder, Dremel or file (it's not far off). There are conversion kits with what you need but if you aren't racing the factory stuff is fine.

waxenate

iTrader: (5)

I'm pretty much a newb...just to the point of knowing what questions to ask! lol Thanks for the info. I can get a flywheel from a 2000 Z-28. If I get that where can I get the spacer? And what is the correct term for it?

Thanks

gofastwclass

iTrader: (2)

GMPP sells the spacer and bolts you need but there are other places that have them too. I have a GMPP dealer close to me and when I bought mine there weren't many other options. I think it was around $90 for the adapter and six new longer bolts.


The GM part numbers are 12563532 and you will need six of 12563533. The big online performance houses sell this stuff too, but I got it cheaper through my GMPP connection. There are other companies that sell the same parts form aftermarket manufacturers but I don't have any info on them.

You do realize the LSx PCM can't control the 1995 torque converter lockup and shifting, right? The 1996 and newer transmissions are Pulse Width Modulated and the older ones are not. This and the spacer info are covered in my Thunderbird build topic in my signature.

Earl Filter

iTrader: (1)

Is that the same spacer that would be on the flexplate of an LQ4/4L80E? If so, I have the flexplate and the spacer.

gofastwclass

iTrader: (2)

Same, same.

flame

iTrader: (13)

The 95 4L60E is PWM TCC so yes it will work. I used the flexplate and spacer kit from advanced adaptors part# is in my swap thread.

waxenate

iTrader: (5)

What other cars is the 4L60E in that will work? Btw...good write up on your swap...fun read! I could relate to the part searching!

flame

iTrader: (13)

You can use your original transmission

waxenate

iTrader: (5)

Funny.....I had been thinking I should pm you! Thanks

gofastwclass

iTrader: (2)

You said that twice.

That would be cool if he could. The things I read in multiple places from trans shops, etc. when I was searching said you can't and 96 was the magic year. I know spotting one is as simple as removing the converter and looking for PWM on the front pump. I've been wrong before, so my feelings won't be hurt if I'm wrong again.

flame

iTrader: (13)

When he asked about getting a trans I figured he didn't catch that the first time. The trucks didn't use PWM until 96 so you are partly correct.

I included a pic of the wiring diagram to take away any doubt you have whether it will work or not.