Packard Forum Index » V-8 (1955-56)

nope not 5/16 tips 1/4 tips i didn't mike the thing out. I knew it was 3/8 i measured the 10.5 just assumed the tips would be 5/16 like everything else known to man other then air cooled VW which is also a 3/8 with 1/4 tips and come in a variety of lengths from 10.5 to 11.5 to cut your own.

OK, I've got more than a lifetime supply, PM me with your name and mailing address and I'll send one your way.

PS - packed and mailed.

Why would Packard change the pushrods?

LtRD, I believe they had different end caps with smaller holes to better control the amount of oil going to the rockers. Others are more knowledgeable about this, but there were some oil control issues with the first V-8s.

Nice seeing you in Kerrville on Saturday.

(o{}o)

I'm not familiar with what the changes were between the 55 and 56 push rods and would like to know, but with regard to modifying the oil flow to the valve train there were two changes to the rocker arm shafts, both documented in the TSBs. Also two different rocker arms, with and without an oil "pee" hole at the tip.

Ross and Jack Vines probably know this best, I'd really appreciate their input as to these changes and variations.

Delivery by USPS estimated for 4/11.

A "pee hole"..... I love those technical terms...LOL

John

Thank you sir and I've got something coming your way for your troubles. that hit the valve on the head. I'll be posting some pics next week of all the madness around here.

Quote:

Packard, early Mopar OHV8s and a few others used 1/4" ball pushrod tips. Experience proved these too small for the loads and Mopar changed to 5/16". This difference is why later Mopar lifters don't work in Packard V8s.

Quote:

The Packard V8s sent oil up through the left front and right rear head bolt to the rocker shafts, so the pushrods have no influence on the oil going to the rockers. The pushrod ball ends are solid, with no hole whatsoever.

jack vines

EARLY 55 V8 ROCKER arms had no hole DIRECTLY over the pushrod socket????