Small Block Chevy Heads - 487X - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board

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06-14-2010, 04:09 PM

ericnova72 ericnova72 is offline

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Quote:

Originally Posted by david73

can anyone tell me if i will gain horses by changing from 993 heads to 487x

The switch might help at higher rpm, but stock for stock with no porting you will not be able to tell the difference in the seat of your pants, it will take a dyno or dragstrip testing to tell. Not worth the cost of gaskets to just make a straight swap.

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