split or solid valve guides

[gundoca]

I am in the middle of rebuilding a 39 221 v8 and have one chipped valve. The engine has the mushroom split valves, do I have to stick w/ these or can I replace all the valves w/ a solid valve kit??? What's the advantages of one over the other???

[JM 35 Sedan]

You can go with straight stem valves and one piece guides. Easier to assemble and disassemble. Lower cost valves more readily available especially if you use chevy valves. JMO

[ford3]

go with the straight stem valve, as was stated they are easier ti work with, chevy valves are longer, great if your using a reground cam and adjustables (which i dont like or recomend) original ford intake valves have an indentation on top of the valve, exhaust valve heads are flat

[Ol' Ron]

The biggest advantage of using the later valves and lifters in a rebuilt early engine is the better oil control and sealing of the later guides. If you plan on going through with this change use 52-53 valves springs and rotators, this will improve longevity and better sealing of the valves.

[Jack E/NJ]

gundoca>>>I am in the middle of rebuilding a 39 221 v8 and have one chipped valve. The engine has the mushroom split valves, do I have to stick w/ these or can I replace all the valves w/ a solid valve kit??? What's the advantages of one over the other???>>>

If you already got most of those suckers out without destroying them --- and money is an object like with me --- I'd prolly try hard to put as many of them back together as I could without replacing them all. It doesn't really bother me that one of my valve assemblies doesn't match the other 15. And my 21-studder doesn't seem to mind either ---- yet. 8^)

Jack E/NJ

[gundoca]

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Thanks guys, that helps alot. Now I'm trying to decide to replace one or all cause money is an issue...

[ford3]

at the moment i would just replace what needs to be, go with the solid guide, your engine wont know or care