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Old 05-16-2010, 03:45 PM
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4.3 shot in the dark

I`m dealing with a 1997 4.3 V6. I`ve got it stripped all the way down and getting it ready for clean up and honing. I was taking a look at the heads. The tonawanda GM plant on 4.3`s switched to "net lash" valve adjustment. Since I`m going to with a Comp aftermarket roller grind it has to be changed over to adjustable. The head studs are already screw in type with threads only half way down the stud. I`ve looked at aftermarket studs that convert it and they are expensive. I`ve also thought about buying standard small block chevy studs and having the holes retapped in the heads but this would also be expensive. This is a shot in the dark but thought I`d ask. What if I took the studs on there and threaded them all the way down like a regular screw in stud is? Is this possible or am I missing something here? This would be the cheapest and easiest route. Thanks for any views on this issue.

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Old 05-16-2010, 03:57 PM
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From looking at mine it looks like you would have to turn down the OD in a lathe before you could run a die down them and don't you still need a shoulder for the pivot to rest against? Plus how hard are the studs and how deep are they hardened? I don't know what the conversion studs cost but every time I try to save a few bucks this way it ends up costing me twice as much as what I was trying to save.
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Old 05-16-2010, 04:03 PM
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Lol that sounds like me Hippie. I`ll likely just order a set of conversion studs then and be done with it. I have to strip the heads next and run them over to my machinist so he can clearance the valve guides for the higher lift cam.
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