[Hozer 88GTConv]

I have changed seals twice now. The full-metal jacket type to be sure on number 5.
Total head rebuild done two months ago. Fel-pro Gasket is tight, new ARP studs with sealant, bronze guides and plates were perfect. Valve setup is money. Car runs very strong. Until, number 5 fouls then it is barely noticeable by an occassional miss. MSD and a plug two ranges make fouling harder.
As soon as this is done, i'm getting a Kenne Bell. I swear.
No leaks at all, all plugs look perfect except 5.

You are right on the one-way check valve. Dammit. That makes me want to buy beers for everyone who bothered to post and slam my head in a door jamb for being so retarded.

This has gotten the better of me.

I have rebuilt the heads, seals, lapped the valves etc. But number 5 is sucking oil and my gut is telling me the lower intake /head surface is bad.

I just don't want it to be rings, b/c the bottom end is less than 20k from a full rebuild from a very reputable race shop.

Shit, I 'm just going to get a new TFS intake and try it out.

Beers for everyone, on me....