Pushrod length?

[jetmech]

Having my heads ported and will be milled flat. Should i measure for new pushrods or is the stock length good. Using stock rocker assemblies. thanks

 

[231Turbo]

I would. Get a adjustable 5/16 push rod from summit or jegs get the cylinder to top dead and measure .Add. 020 or .030 for preload to get the finally lenght

 

[excobraguy]

I would. Get a adjustable 5/16 push rod from summit or jegs get the cylinder to top dead and measure .Add. 020 or .030 for preload to get the finally lenght

Summit has different length specs for their adjustable pushrod tools:

Trick Flow Adjustable Pushrod Length Checkers
Pushrod Length Checker, Adjustment Range 6.125 in. to 7.500 in., Ball Ends, Each
Today $11.95
TFS-9001 Trick Flow Adjustable Pushrod Length Checkers
Pushrod Length Checker, Adjustment Range 7.500 in. to 8.700 in., Ball Ends, Each
Today $11.95
TFS-9002 Trick Flow Adjustable Pushrod Length Checkers
Pushrod Length Checker, Adjustment Range 8.500 in. to 9.800 in., Ball Ends, Each
Today $11.95
CCA-7702-1 COMP Cams Master Magnum Checking Pushrod Kit
Pushrod Length Checker, Adjustment Range 6.800 in. to 7.800 in., Ball Ends, Each
Today $21.95
CCA-7703-1 COMP Cams Master Magnum Checking Pushrod Kit
Pushrod Length Checker, Adjustment Range 7.800 in. to 8.800 in., Ball Ends, Each
Today $21.95

Which one would be the best selection for measuring our GN's length????

 

[excobraguy]

Anyone?????????????

 

[Lee Thompson]

Imho

If you are just having the heads touched up (trued) and going back with the same thickness gasket---NO--stock length will be fine.

 

[ijames]

Stock is 8.2ish so the TrickFlow 7.5-8.7" one is the one to get. Same cam, same lifters, same rockers, same gasket, heads cut less than 0.010", you should be fine with the old pushrods.

 

[WSLN 6]

I have a set of new 8.225 pushrods from Full throttle if that is the measurement you come up with.