[Tim Corcoran]

I admit I'm a little confused about getting the correct length pushrod. With a solid valve lifter it's pretty straight forward. With a hydraulic lifter is where I need some insight.

I have the comp cams evolution lifters and preload travel is .125"

I bottom out the travel making the lifter act like a solid lifter.

With an adjustable checking pushrod I find the best pattern towards the center of the valve with the shortest sweep.

Since the lifter was bottomed out when checking now I need to add or subtract a certain amount to make up for bottoming out the lifter. This is where I get confused. Do I add or subtract for the correct pushrod length and by how much?

Also is it better to have the pattern more towards the exhaust side or the intake side?

Thanks for any guidance on this