561boii

can you take the heads and intake (upper and lower) off of a 347ci and put them on a 302ci???

FuzzyDiceRule

Yes

however, if its a stock 302, the cam will have those heads and intake's ***** in a vice grip

what brand heads and intake are they?

mjr46

FIRST WHAT DO YOU HAVE ON THE 347???

USMC1775

Yeah you really need to know what kind of heads they are, but they should fit. The 347 is the same block

silver91gt

the 347 uses the same 8.2" deck block as the 302, just has a 3.4" stroke and 5.4" rods instead of the stock 3" stroke and 5.09" rods.
they are the exact same block.

silver91gt

now, a 302 block uses 7/16 head bolts, if the heads are aluminum and are made for a 351 the only difference will be the head bolt holes in the head will be for 1/2 inch bolts, and to use them on the 302 you will need some reducer bushings but thats only if the bolt holes are 1/2".

but you really need to know what heads they are before you try, most inline heads with a 2.02 or bigger intake valve will not clear the stock pistons.