308 springs

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Robbie2734

Robbie2734

Lambcharger
Joined
Aug 6, 2005
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Location
Milford NJ
I'm getting my heads redone and need some information on these heads. I know the castings are a little thin and need to cut the spring pockets to get the spring pressure down a bit. What is the maximum I could get away with, the final seat pressure will be 140 closed and 320 open. How much cat I take off the spring pads safely. This is for a street motor (3:23 rear) that won't see much over 5500.
 
IMO, I wouldn't worry to much about the spring pressure. Good question though. I'd like to know that one myself.
 
Right now we have 177lbs on a closed valve, thats a tad high. I want to run my 273 rockers, I'm not sure how they will like that. By the way, this is a roller cammed motor.
 
Ummmmmm, yea, a bit high. Pm one of the engine builders?
 
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