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Discussion Starter · #1 ·
My Dad picked up a 84. its got a 351 High Output in it.. my Question is.. what makes it a high output? i know it has a holly 4v carb, but whats the diff between the high output and the regular 351W? (i did search)
 

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Different cam specs and slightly higher compression. Not sure if the increase is from pistons or heads.
 

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Discussion Starter · #3 ·
any idea of what the compression ratio is? or the factory cam specs? my plan is to rebuild this motor to replace a 302..
 

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I dont have mine handy, but I bet its in Haynes. I never paid attention whether the HO was specified, but I know it has cam specs and cr's for the 300, 302, 351W and 460.
 

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Discussion Starter · #5 ·
i lost my Haynes so i can't look it up without going to the library.....
 
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