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Bending Push Rods 390 FE

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  #1  
Old 05-30-2016, 11:27 AM
sonny1965
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Bending Push Rods 390 FE

Good Morning Guys

This is what I have
FE 390
was bored 030
crank 010/010
all new valves, springs, valve guides
mild rv camshaft
proformer intake and 600 cfm vac secondaries holley

Drove truck had immediate miss found

bent # 2 exhaust push rod
replaced push rod drove it a little not much at lower rpm,s

bent # 6 intake push tube

Have any ideas where I need to look first?

Thanks
Sonny
 
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Old 05-30-2016, 03:14 PM
85e150six4mtod
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Springs matched to the cam?

Heads milled or block decked?

Rocker oiling correct?
 
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Old 05-30-2016, 04:49 PM
sonny1965
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Bending Push Rods 390 FE

Originally Posted by 85e150six4mtod View Post
Springs matched to the cam?

Heads milled or block decked?

Rocker oiling correct?
Will have to get with the machine shop they did both thanks
 
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Old 05-31-2016, 07:09 AM
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How did you re-install the rocker arms? There is a procedure.
 
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Old 05-31-2016, 08:33 AM
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If you reused the old push rods, dollars-to-donuts they are too long after the rebuild.

Sounds like a valve-lash check is in your future.
 
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Old 06-01-2016, 07:15 AM
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Thanks for all of your help will check valve lash
 
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Old 06-03-2016, 07:38 AM
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Probably a hydro cam so no "lash", his lifters should have preload. You probably will need different length p.r. now because aftermarket cams are likely ground on a different base circle plus all the new parts and machine work that's been done. It has to be checked now.
 
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Old 06-03-2016, 07:42 AM
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You still check the "lash" with hydraulic lifters, there just a much wider range that's acceptable
 
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