1fastWS6

iTrader: (3)

I'm replacing the teflon seals that came on my heads.

I bought some Fel-Pro stock replacement seals (see attached) that are Viton, but they are for a .492" guide / 8mm valve and they won't go on the guides too tight. I need some exactly like these but for a .500" guide and 5/16" valve. This should be a common SBC part but the local parts store idiots can't find anything.

My car has been apart for a week now and I need to find some seals. HELP PLEASE!

Thanks,

LS1derfull

I believe that crane sells what you are looking for.

Ed Curtis

I have the polyacrylic on the shelf and should have Viton next week...

Ed

Richard@WCCH

iTrader: (3)

If your not running dual springs, I've got Viton seals that'll fit. If your using dual springs, I've got factory GM seal kits that will work.

Richard

1fastWS6

iTrader: (3)

Thanks Richard. I'm running stock dia. dual springs. The Fel-Pro's I found fit the springs, just not the larger guide real well. Also, do you think using a seal designed for a larger 8mm valve with a 5/16" valve will be a problem? There's only .0025" difference in diameter.

Paul F

iTrader: (2)

I have the exact seal you are looking for setting on the shelf. Just give me a call if you need them.

mike m

iTrader: (6)

I talked to my machine shop and i was told the seals dont just wear out that fast. excesive guide clearance is the only thing that will cause that to happen. the viton seals may not be the fix. You should bring the heads to a machine shop to check the guide clearance. better safe then sorry.

1fastWS6

iTrader: (3)

The seals aren't worn out........they were cracked from bad install.

Paul,
I'll give you a call. Almost forgot that I talked to you about that on the phone the other day. Thanks,

Craig