00exjay

Is it worth the extra $$$ to get the severe duty gasket?

DeadCellM60

It couldn't hurt. If you're gonna go through all that trouble you might as well get the best stuff you can. That's my philosophy anyway.

XJeepWerks

When I upped my compression ratio I installed a mopar performance head gasket. I have been trouble free so far. Bought mine from summit if I remember correctly

stephenfarris

Like to know myself, I just rebuilt mine with the felpro severe duty gasket.

00exjay

I asked this guy at work who has rebuilt engines and got 480hp out of a 306. He said it just helps it seal better and is worth the extra $12 bucks

good_ole_xj

Just don't get a rock head gasket!!!!

00exjay

It's felpro from advance. Now my new problem is new valves are $200 bucks. How do I know if my old ones are bad?

good_ole_xj

Intakes are usually fine as they run much cooler than the exhaust. How many miles on the engine. The exhaust valve are probably pitted.... If they aren't too bad and the guides feel ok you can probably just lap them in.

00exjay

I have no clue my old head was a cracked 0331 this one is a 0331 off a 04 grand Cherokee. No clue how many miles were on it. If I took it to a machine shop they will be able to tell me if there bad?

good_ole_xj

Should be able to. They would have an inspection charge probably. They can check the casting for cracks and check the guides and how bad the exhaust valves and the seats are.

00exjay

Sounds better than $200 bucks that I might not need thanks for the advice

XJeepWerks

An auto machine shop should be able to check the valves for you and regrind them fairly cheap if they need it. I had my head ported, decked, magnafluxed, and had a three angle valve job done for a little over $300. He reground my valves and they looked brand new.

Willys55

This is they it should be done.