Yes there were different heads for the for the 4bbl engines. They had the heavy duty valve springs installed on the 4bbl engines.
True, the castings were the same. But they were different.
I did verify with my machinist, when I went thru my 273, that my valve spring pressure at full lift was 280, not the stock 170lbers.
Guys...there no such thing as "4 barrel " factory heads for a 273, no matter what year we're talking. The only difference is the bolt size and angle of the 64-65 heads.
----- Original Message ----- From: "Gary H." <
62to65mopar@xxxxxxxxxxx>
To: <
1962to1965mopars@googlegroups.com>
Sent: Friday, July 25, 2014 6:07 PM
Subject: Re: SMALL BLOCK MOPAR 273 318 340 360 ELIMINATOR ALUMINUM INTAKE MANIFOLD
Perhaps they meant the optional 318 V8 that was available in the Plymouth and Dodge M-bodies 1981 to 1989; it had a 4bbl mated to 360 heads. I recall these as popular in the 1980s Pick-a-Part type places to pull and use in earlier Mopars.
Thanks,
Gary H.
-------Original Message-------
From: Tom Watters
LA heads are 64-65, and 1966 up, the post is wrong saying it fits all four barrel heads, 65 was the first year with four barrel heads with the stronger valve springs, And they had the 5/16 bolt at the 65 bolt angle.
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Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks!
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