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The heads will work, only difference is the 302 head bolts are 7/16" and the 351 is 1/2". The the lower intake will not fit. The 351 has a taller deck and im not sure if the 302 upper will bolt to the 351 lower. Although you wont gain much of anything using 351 heads on a 302.
 

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The heads will work, only difference is the 302 head bolts are 7/16" and the 351 is 1/2". The the lower intake will not fit. The 351 has a taller deck and im not sure if the 302 upper will bolt to the 351 lower. Although you wont gain much of anything using 351 heads on a 302.
+1,
 
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