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I was told by a machine shop that if I used a stainless exhaust valve that I did not need to have hardened seats installed for unleaded gas. He told me that the hardened seats only needed to be installed if I was running a stock steel valve. Is this correct? It kinda makes sense to me.

I just picked up a running 77 440 out of a motorhome. Gonna drop it in my Valiant in more-or-less stock form just to get my car on the road and have something to play with. Does anyone have any info on the engine specs for this engine? Did they have any extra performance goodies in them...

ok, from what I've read, the early truck 318 engines designated "318-3" on the block casting had a forged, hardened crankshaft... I just picked up a 318 that is supposedly the original engine out of a 73 Cuda. This block is also showing the "318-3" casting number on the side. Any one have...

I found a 74 Dodge Club cab truck in a salvage yard. It is a military issue truck, so it doesn't have the normal emissions stickers under the hood. I can't read the casting number or even see it because of the starter and manifold/exhaust. The one sticker that is on the fender says it is either...