amc 304

amc 304

jeeper78cj5

Jeeper
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Location
sparta,ky
Vehicle(s)
78 cj5 amc 304 t150 dana20,
50s willys truck still being built
i was just wondering how far a 304 can be bored out
 
i was just wondering how far a 304 can be bored out

IMHO thinwall castings are pushing it at .030;)
I would have it sonic tested before you bore & don't forget the deck plates.:cool:
 
they dont grow on trees anymore I also sugest to have youre block sonic checked and bored accordingly it would suck if we gave you a number and it didnt work for your block:chug:
 
i have heard else were that the 304 can go .125 over with no problem
 
i have heard else were that the 304 can go .125 over with no problem

There was a factory service block that had no numbers cast into the side.
It could be 304, 360 or 401, but the blocks with the side are not known to have that kind of thickness. I f it did you'd need some 360 or 401 heads to the the bigger valves, as the 304 has small valve heads. With 360 engines being the most plentiful there seems to be little reason.;)
 

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