You should be using 8.050 length pushrods in your hydrolic roller 351W. I have a set of Trick flow twisted wedge heads and that info was in the Installation notes in the manual for them.
"289/302 engines with any recommended rocker arm
Camshaft Type Pushrod Length
Hydraulic roller 6.750 in.
Hydraulic flat tappet 7.300 in.
351W Engine with any recommended rocker arm
Camshaft Type Pushrod Length
Hydraulic roller 8.050 in.
Hydraulic flat tappet 8.600 in. "
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-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway
-1994 Ranger w/ 427cid windsor (daily beater)
check it out!
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