About 20 years ago I had a similar problem with a rocker arm assembly on my
56 235. After replacing the destroyed assembly, I fabricated a line tee-ing
off of the oil pressure guage line, and it worked great.
Karl
----- Original Message -----
From: Gordon Groves <ggroves100@earthlink.net>
To: <oletrucks@autox.team.net>
Sent: Tuesday, July 18, 2000 10:59 PM
Subject: Re: [oletrucks] Oil Line
> I built a '56 235 for my '51 AD 1/2 ton and after getting all put
> together we fired it up and I was shocked to not be getting any oil to
> the top end after much head scratching and a diligent search in about 7
> different editions of "Motors" manual we found that there is a year or
> two that have a oil line in the rocker galley that goes from the bottom
> left drain hole up to where the plug is usually found on all other
> 235's Mine had a plug , but the oil passage wasn't the same as others
> I checked and the bottom left drain hole has threads (man , I had to
> look real close to find em !) otherwise the casting looked the same as
> any other 235 , Mine also had a completely worn out rocker shaft and the
> no oil to the top would explain that .
>
> I just fabbed a line from 1/4" copper tubing flanged the ends like a
> break line and it has been fine since , got something like 12,000 miles
> so far and Im getting plenty of oil up top ,.
>
> A previous mechanic had removed the line at some point and that's what
> broke the motor before I got it , I seem to remember that this
> particular anomaly was only done in '56 but I could be wrong , I was
> only able to find it mentioned in one of seven "Motors" I looked in .
>
> I don't have any kind of tubing in with the rockers though except for
> the usual curved one that feeds the main rocker shaft.
>
> Gordon Groves
>
> '51 1/2 ton
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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