Re: New Member
Quote:
Originally Posted by bigblockv6
The biggest difference is the 305A & B engines were 1 bbl carbureted while the 305C,D & E were the same basic Bendix/Stromberg ww 2bbl. Heads were all the same on these engines, yes valves did get bigger in later years with the 305E and C engines. Horsepower went up with cam profile changes in 1966 with both 305E & C engines, they gained a total of 15 net horsepower, the only changes to these engines 1968 was a new breather cap mounted on the valve cover with a hose that ran to the air cleaner which eliminated the breather assembly and tube from the back of the engine.
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Pete, what exactly were the cam changes? More lift? If so, you know what they were and what they went to? I was guessing around .380
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"Excuse the rust I use my truck"
1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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1964 Chevy C20 292/SM420
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