pushrod length
 

I'm planning on upgrading to a new set of 1.7 rocker arms and figured I might as well replace the stock pushrods. The problem is that I'm running into different size pushrods available for the roller cams. Comp Cams has a set that are 6.250, Ford Racing has a set that are 6.272, and Crane has a set that's 6.258 inches long. I would think that the Ford racing rods would give the stock cam with 1.7 rockers would be a good combo with my Comp Cams valve springs. But I'm worried about too much valve lift, and piston to valve clearence..
If anyone has any input I'd greatly appreciate it....
Thanks

Re: pushrod length
 

Get an adjustable pushrod length checker.
Color the valve tip with some black magic marker.
install the checker and rocker arm.
manually rotate the engine a few times.
take the rocker off.
check where the marker was rubbed off.
it should be worn off in a stripe sideways across the middle of the valve tip.
measure the length checker.
Presto.

Re: pushrod length
 

Stud mount or pedistal mount rockers?

Re: pushrod length
 

they have the stock pedistal mount rockers

Re: pushrod length
 

Thats only accurate if you use a light "checking" spring in place of the valvespring. Otherwise you will bottom out the plunger and the readings will be off. You can also modify a stock lifter to simulate a solid one.

Why are you replacing the pushrods? Is there something wrong with them?

Re: pushrod length
 

Nothing's wrong with them, but I figured since I already had them taken apart, I might as well replace them. They are basically one of the only stock components left in the motor.