should i add more pressure?

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11-21-2012, 10:39 AM

bugy

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should i add more pressure?

should i add more pressure to valve springs when boosting an engine? cam is supposted to work with 140 lb. how much pressure should i add, pro-charger will boost 14psi, into a 408ci

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11-21-2012, 11:25 AM

Brian Tooley Racing

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Quote:

Originally Posted by bugy

should i add more pressure to valve springs when boosting an engine? cam is supposted to work with 140 lb. how much pressure should i add, pro-charger will boost 14psi, into a 408ci

I would add 10-20 lbs on the seat. Which lobes does your cam have? Which heads do you have? Do you know the intake valve weight? Stock rockers?