Vale Seals

[zofo61]

OK.......3500 heads....stock valves.......stock keepers and locks...LS6 springs.

I have dremelled out the copper shims and now have the list of all the seals that have been used.

1991
1992
1994
Cavi 2.2 seals

TEJohnson used Felpro Viton SS 72685's

and there is the Felpro Viton SS 70829

What is the best of all these?

Thanks

[Superdave]

I have used the 1991 2.2L exhaust seals with great success on 2 or 3 sets of heads.

you are using LS1 seats right?

[gectek]

my felpro 2.2s came off....about 3 of them. dont ask me why. i would use the viton style ones. they are better imho.

i think i still have a set of the 2.2l seals if you wanna try them...ill have to look though

[zofo61]

I would love to compare them....hard to argue with TE Johnson....he is a God among Boosted Men.....any other opinions....chime in please

Chris

[IsaacHayes]

Make sure you use the ls1 seats not just copper shims.

[zofo61]

LS1 seats vs copper shims....anyone have pics of them both for comparison so i know what I am using?

Cheers

[Superdave]

LSI seats have a ridge that centers the spring so that it dosen't move around and pull off the valve seal.

regular shims do not, they're just flat.

[onefastV6]

You would know if they were copper if they were easy to dremel out. Copper would cut like butter, however the LS1 shims are not copper but only a copper color.

[ForcedFirebird]

The LS1 seats/shims look like the black part of the stock seats/seals, but gold color and shorter.

I used FelPro part number ss70816, you'll need two packs if you order them like this. I just asked for 1991 Cavi 2.2l seals. I've used them on a few sets of heads and the LS1 shims, no problems to report as of yet.

[Jbrogan]

i use the intake valve seals that go to the old style mpfi 3.1 for all the valves and had no problems. also i use steel shims for valve seats and had no problem.

[Superdave]

Yet...

[Jbrogan]

they r the same as the intake valve seals on a 2.2 so idk why they wouldnt.

[SappySE107]

Experience. I won't even use 2.2 or 3.1 seals any more now that I have a solution that cannot slide off the guide once installed.

If you want to discuss seals, please start a new thread or reply to one that isn't 2+ years old.