351w Guys, I Need Help!

[jnobles06]

i have a 351w in an sn95 and i stroked it to a 393. i bought world products windsor sr heads that were 64cc new, but they have been milled to 61cc's. i have a lunati hydraulic cam (.496 in .520 ex lift, duration at .050 tappet lift is 224 in 234 ex) i have the lunati hydaulic lifters as well with 1.6 roller rockers. does anyone know what length pushrod i need to use? thanks guys. oh and its a 74 block by the way.

 

[Joes95GT]

No one is going to tell you a correct size. There are too many variables to "tell" someone what the "correct" pushrod size is. You'll have to measure for yourself.

Correct pushrod length = 90* angle between the rocker and valve tip when the valve is exactly half way open.

Joe

 

[yellow1995Cobra]

only way to tell is to get an adjustable pushrod. Stick that pushrod in at various lengths until u get the contact patch from the roller tip of the rocker on the center of the valve. Then just measure it and order the pushrod from summit.