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Post Info TOPIC: hardened valve seats


Poncho Master!

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Posts: 1921
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hardened valve seats


i know there is different opinions on this and first off my car is just for cruising, soooo, should i be worried about not having them? Should i always use a lead additive? if so,  Which one? Could i put the heads from an 79 305 on, or a 350? confuse

-- Edited by 59poncho on Tuesday 7th of April 2009 02:05:50 PM

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1959 El Poncho!!


Poncho Master!

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Posts: 1921
Date:

And another thing, i dont have any valve noise and would it be worth it to take the heads and manifold off to re-gasket them even if i have no leaks right now, and since i dont know when it was done last or ever.

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1959 El Poncho!!


Poncho Master!

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I used stp in my gto, ran great. The lead is basically a lubericant. As the engine heats up, the valve seats will warp if it gets hot. Something to think about. I personally would redo the heads with hardened seats if you plan on driving it hard, or long distances.

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Poncho Master!

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Posts: 1921
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what about just putting newer heads on? Im not too worried about keeping it original, and i can paint anything and make it look like it was always there! I figure the longest i will be driveing is a couple hrs. now and again. I also have no problem just putting the lead add. in.

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1959 El Poncho!!


Poncho Master!

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Posts: 1921
Date:

i have heads from a 305 and a 350 that i can get for free, both from late 70s engines. Would this be the way to go or should i redo the orig. 283 heads? Is this expensive or hard to do?

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1959 El Poncho!!


Poncho Master!

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Depends on who is doing them. Easier to send them out than playing with them.

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