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Old May 17, 2003 | 01:29 AM
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Default head question

Approx how much hp would be gained going from a 3927185 to a rebuilt set of 3927186 with 202's? Thanks in advance
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Old May 17, 2003 | 04:00 AM
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Default Re: head question (telk)

3927186-3927185=1. Just ONE unit of head telk. :jester
Sorry. Couldn't resist. :D
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Old May 17, 2003 | 12:04 PM
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Default Re: head question (telk)

20 years ago they were popular(186).
But with all the better flowing aftermarket heads out now, why would you want them?
To answer your question i need to know how many HP the 185's give you and what the difference is between them(valve and port size, etc.). In general, if you pocket port them look for +20-25 hp.
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