Pushrod length

Author Topic: Pushrod length  (Read 500 times)

Offline shatar4

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Pushrod length
« on: May 16, 2010 - 06:17:39 PM »
I am changing cams in my stock 340. Still has the stock iron heads (2.02 & 1.88 valves, 1.5 rocker arms). I am looking at the Whiplash cam.

Camshaft Technical Details
Intake Valve Lift 1.5
Exhaust Valve Lift 1.5 .512"
.518"
 
Intake Valve Lift 1.6
Exhaust Valve Lift 1.6 .546"
.552"
 
Intake Duration at .050"
Exhaust Duration at .050" 223°
236°
 
Lobe Separation Angle 107º
 
Intake Opening at .050"
Exhaust Opening at .050" 7.5° BTC
48° BBC
 
Intake Closing at .050"
Exhaust Closing at .050" 35.5° ABC
8° ATC

or the VooDoo cam

Basic Operating RPM Range  1,400-5,700
Intake Duration at 050 inch Lift  220
Exhaust Duration at 050 inch Lift  226
Duration at 050 inch Lift  220 int./226 exh.
Advertised Intake Duration  262
Advertised Exhaust Duration  268
Advertised Duration  262 int./268 exh.
Intake Valve Lift with Factory Rocker Arm Ratio  0.475 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio  0.494 in.
Valve Lift with Factory Rocker Arm Ratio  0.475 int./0.494 exh. lift
Lobe Separation (degrees)  112
Intake Valve Lash  0.000 in.
Exhaust Valve Lash  0.000 in.


My question is can I use the factory 7.5 pushrods with these cams?
1971 Triple black 340 Challenger




Offline Chryco Psycho

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Re: Pushrod length
« Reply #1 on: May 16, 2010 - 07:25:44 PM »
Maybe the lifter cup can be at different heights depending on the lifter make
the cam base circle should be the same height

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