7cuttlas1

My Ly6 currently doesn't have a flex plate and I m looking to mate a 4L80e to it but I'm unsure of the flex plate and spacer needed. Can anyone give me a part number or direct me to where I can find what I'm looking for please? Thanks.

1990iroc

I’m currently running into the same situation.. I have an ly6 with no flex plate and plan to run a 4l80..can you tell me what u ended up doing

MaroonMonsterLS1

crank spacer and flat flexplate

1990iroc

Thanks for the reply.. would you recommend upgrading the flexplate or would a stock gm work .. I am going to be around 500 hp but mostly street driven

MaroonMonsterLS1

I'll never NOT recommend an SFI flexplate.
It's just the smart way to go

Now...I've had customers put WAY more power through a stock flexplate than you have...so spend money where you see fit

1990iroc

What type of starter would I need to use for this set up

MaroonMonsterLS1

Stock LS

EddieK

Is there a reason not to use curved flexplate??

That's what I will be using with my 6.0 and 4l80E. I was told by a converter company that it's fine.
I bought a PQX-1834610 made by PRW. Same as Hughes and many others.

MaroonMonsterLS1

If you're ordering the converter with those specs. Then it is fine.
If you custom order a converter, they can make the bolt pattern match the dished flexplate and they can make the pilot longer so you don't need an adapter.
But, if you're just ordering a "normal" 4l80e converter with nothing custom, the pilot won't engage without the spacer. And the bolt pattern won't be right without using the flat flexplate.

EddieK

Thank you for explaining.

1990iroc

when you say stock LS ..does that mean any type of Ls starter .. so would a 5gen camaro starter work ? Cause in my case I’m using the gm spacer to push back the Flat flexplate .. would I need a truck starter?

MaroonMonsterLS1

For starter ring gear placement

Flat flexplate with spacer between crank and flexplate

==

dish flexplate with no spacer

==

dish flexplate with spacer after the flexplate



so yea, your gen5 camaro starter should be perfectly fine.
The differences in starters are the size of the body and clocking of the solenoid. and some models have 2 long bolts and some have a long and a short. So, just pick whichever fits the chassis/trans bellhousing you have and it should be fine. Ring gear placement is the same as far as I know