Thread: which heads to use?
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  #14  
Old 07-08-2021, 01:15 AM
Dragncar Dragncar is offline
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Join Date: Mar 2004
Location: Humbolt County California
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Find some 13s or 62s, 6X4s. 64 heads work great on 400s too.
13s and 62s are not 72 cc like the manuals say. More like 77. They will get you 9.4-9.6 CR if they have not been milled.

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