1. Home
  2. Chrysler Cars
  3. Question on checking valve lift 360 motor.

Question on checking valve lift 360 motor.

I have just purchased a Mopar Performance 360ci short block assembly and I am putting in a different cam with less lift. To be sure that I have good clearance between the spring reatainers and the valve seal I did the usual check using the #1 cylinder at TDC and turning engine by hand measured the lift. The problem is that the new lifters bleed down when I do this and they only lift half as much (about .200) as the .450 they are supposed to be. How can I check the lift clearance more accurately without risk of damage to the valve train?

Brett

Reply to
Brett
Loading thread data ...

If you're installing a cam with less lift, I'm puzzled over why you think the seal/retainer clearance needs to be checked...

Any who...

You can temporarily install a solid lifter in place of the hydraulic one you're checking at, your local NAPA store should be able to get you one solid lifter to fit a 1966 Chrysler 273 for just a couple of bucks. (solids are cheap)

An alternate method would be to substitute a weaker spring in place of the valve spring, then you can measure valve travel until the retainer contacts the seal with a dial indicator (make sure the piston is down the bore somewhat and operate the valve by hand while taking the measurement).

Reply to
Neil Nelson

I am using stock heads on the MP short block. The lift on the old engine which heads I am reusing was .410 the MP engine's camshaft is .509 which I'm almost positive will hit so I now have a .450 lift cam instead. I just want to be sure it won't mash the seals because it looks very close when I did a rough check with a small ruler. If anyone is interested I am selling the .509 lift/292 duration Mopar Performance cam which is brand new as well as a M.P timing chain and chrome M.P. timing cover. Photos here:

formatting link

Thanks for the info I will give it a shot.

Brett

Reply to
Brett

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.