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Old 01-29-2013, 10:00 PM
shane.,herold shane.,herold is offline
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350 Pushrod length

I am buildin a 74-ish 4 bolt main 350 for a racecar. it has:

double hump heads 64 cc i believe
screw in studs/guideplates set up to stock height according to machinist
1.65 harland sharp roller tip aluminium rockers
summit circle track solid lifter cam ( CT-103 )
standard deck height
fel pro head gaskets
arp head and rod bolts
clearanced crank
double roller timing set
cam degreed
.060 over bore
ect.

i have it all put together, but i went to put rockers on and they bottom out on screw in studs before they come into contact with pushrod (standard length comp). So i put my Manley pushrod length checker on it and a standard length is perfect. Yet i put an adjustable pushrod in it and set it up to where the rocker will not interfere with the screw in stud and the tip of the rocker is way far on the outside of the valve stem..

I do not know where to go from here. I could order longer pushrods, but im expecting the guides to chew out or the valves to break at the 7000 rpms im expecting to run this engine. Could my valve spring height be wrong? It has double springs set up to match the cam recommendations.

Please help!!
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