Re: 1974 - 232

[Matt Haas <mhaas@xxxxxxx>]

<snip>
> 2. Shaft (1964-71 and mid 73-74) vs. bridged rocker arms (all other 
> years). Shaft systems have a passage in the block to oil the shaft. 
> Bridged systems oil the rockers through the pushrods. A bridged rocker 
> head can be put on a shaft block as the head gasket blocks the oil hole. 
> Just remember to change to hollow push rods! Mounting a shaft head on a 
> bridged block would require an external oil line. The line as described in 
> the TSB to fix an early six (64-65) oiling problem would work nicely, but 
> there is no real reason to use a shaft head since late model 258 and 4.0L 
> heads are readily/cheaply available. The reason AMC went back to shafts in 
> mid 73 was due to a patent dispute with GM over the bridged rocker design. 
> I don't know how the settlement was reached, but when it was AMC went back 
> to a bridged design for the 1975 model year.
<snip>

Someone please correct me if I'm wrong but doesn't the second coming of the 
shaft rocker setup oil through the push rods? I thought I read that 
somewhere but maybe I'm wrong.

Matt

mhaas@xxxxxxx
Cincinnati, OH
http://www.mattsoldcars.com
1967 Rambler American wagon
1968 Rambler American sedan
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