- Aug 9, 2007
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any 1 know a company i can get a 1969 351w long block m code 4bbl heads cuz all the company's i see only have h code 2bbl or they have 4bbl only in 1975 to 1980
so should i get a 69 h code and just put a 4bbl on it or should i get a 75 351 thats made to use a 4bbl?
I need to read up on that...69 2V and 4V motors used the same heads. The difference in compression was built into the piston.
69 was the only year for 4v carbs on the 351w in cars.
in fact the 69 was the only year for a 4bbl carb on any 351w until the mid 80's when ford finally put the 4bbl carb on a 351w in trucks.
so should i just buy a 69 351 with 2bbl heads and put a 4bbl on it?
just buy any 351w and put a 4bbl carb on it. doesnt have to be a 69 specifically.
there is a very slight difference between 69 2v and 4v heads but only in so much as the vlave springs were different. the 4v heads used a "dual" spring with an inner damper and the 2v's used only a single spring.