Page 1 of 1

lifters for the 276/291

Posted: Tue Sep 30, 2008 5:30 pm
by Spoons
I just got my re-ground cam back from Clay Smith. Is it true you can use a 60's OEM lifter from a 318 as well as the valve springs and retainers??

Spoons

Re: lifters for the 276/291

Posted: Wed Oct 01, 2008 4:45 am
by George
Appaerantly the 318 will work, as well as the 361-413 early 60s BB lifter. Measure the seat pocket, then look in the catalogs for fit & pressure. Standard width 318/340 will fit a Chr, not sure about DeSoto.

Re: lifters for the 276/291

Posted: Thu Oct 02, 2008 11:01 am
by polyspheric
AFAIK they're all .904" OD (same as modern).
Differences include:
1. height of the oil feed band (if the tappet gallery is uncovered during lift you have no oil pressure, if the band isn't fed hydraulics will never pump up)
2. overall height (critical if you have non-adjustable rockers), requires custom pushrods if it's off but otherwise fine - longer is better because it allows a shorter pushrod. I won't do the math, let's just say it's a big help even if it weighs more
3. pushrod socket design - the ball radius must match your pushrod, but you can get custom pushrods with you rocker end and any bottom

Re: lifters for the 276/291

Posted: Thu Oct 02, 2008 11:02 am
by polyspheric
The retainer will depend on what your valve stem cut-out looks like, and your spring OD.
Probably OK, easy to check.

Re: lifters for the 276/291

Posted: Sat Oct 04, 2008 1:19 pm
by Spoons
Bought the custom adjustable pushrods from Smith Brothers...I see they are all( lifters) .904 Dia. I guess it depends on where the oiling hole is in the lifters.
I have the stock springs, keepers and retainers. I can use the retainers, keepers with the new springs???

Re: lifters for the 276/291

Posted: Sun Oct 05, 2008 10:24 am
by George
The stock stuff should be OK on stock valves. The OEM springs are dual springs, but both wound the same direction. In theory there is a possibilty of one getting pinched by the other. On my Chr 331 the spring pockets are 1.40". I used Comp Cams dual spring # 988.