PSI 1511 valve springs. It is a Beehive design so easy to deal with and I could not find a reported failure of their springs. I found plenty from PAC springs.
Cylinder head work is expensive and if you're supercharged, I honestly wouldn't bother unless you're making a race truck and need that extra 20hp.
Cylinder head work is expensive and if you're supercharged, I honestly wouldn't bother unless you're making a race truck and need that extra 20hp.