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Author Topic: Difference in 550 heads  (Read 1135 times)

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traveler

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Difference in 550 heads
« on: January 02, 2010, 06:47:32 PM »
Okay, I remember reading in one of the psots, that someone was saying that there was an improvement made to the 550 head , and that 1977 and newer were better.

Can anyone shine some light on this for me?

Thanks much,

~Joe
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Offline bwaller

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Re: Difference in 550 heads
« Reply #1 on: January 02, 2010, 08:24:52 PM »
Maybe you are thinking about the valve cover? In 76 Honda switched to four long rocker shafts with pins to lock the shafts from rotating in the valve cover. This was a potential problem area previously as rotating rocker shafts caused wear in the cover.
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traveler

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Re: Difference in 550 heads
« Reply #2 on: January 02, 2010, 09:33:17 PM »
EXACTLY! ;)

I FINALLY found it....in a thread talking about a "Gentleman's Express" 590 enigne kit.

Thanks for chiming in though! ;D

~Joe
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