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		zz4 
		alright i have this 350 ZZ4 engine, and i have a 350 in a 72 chevy truck, i was wondering if i can throw a carberated intake on the zz4 if it would bolt up to the stock L31 heads, i was also wondering if my 186 camelhump heads would bolt up to the engine if the water holes are the same, also the zz4 has a roller cam setup in it and i have a high-perf cam in a n other engine but the cam is not a roller, can i use the roller lifters and the other cam or no. 
 
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		If you have the ZZ4, why change the heads?  The ZZ4 heads are better than either of the two you mention.
 
 And NO, you cannot use roller lifters in a conventional cam.
 
 
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		the L31 heads are what is on the ZZ4 engine