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Head Part # for 520 ALLFUEL???

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37G

10-11-2002 13:27:27




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can't find it from last time i asked thnaks




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Write it down, this time!!

10-11-2002 14:00:32




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 Re: Head Part # for 520 ALLFUEL??? in reply to 37G, 10-11-2002 13:27:27  
The assembly number for a 520/530 All-Fuel cylinder head is AB5351R. The casting number for the cylinder head is B3741R. The only difference between an All-Fuel head and a gasoline head is that the All-Fuel head is machined for slightly larger intake valves---the casting number is the same. An LP-Gas head differs only in that it has valve seat inserts the gasoline and All-Fuel heads do not. Does this answer your question? Anything about this answer you don't understand?

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37G

10-12-2002 16:11:11




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 Re: Re: Head Part # for 520 ALLFUEL??? in reply to Write it down, this time!!, 10-11-2002 14:00:32  
okay if i want to check to see if i have an all-fuel head where do i find the number. I guess i found the casting number which you said was the same for a gas. Where is the all fuel cylinder head number?? Thanks



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One more time................

10-12-2002 17:05:19




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 Re: Re: Re: Head Part # for 520 ALLFUEL??? in reply to 37G, 10-12-2002 16:11:11  
There is NOT a part number on the cylinder head itself---only the casting number, which is B3741R, the same basic casting was used for gasoline, all-fuel and LP-Gas. You can measure the intake valve diameter to see just which head you have----a gasoline head will have 1.73" intakes, whereas an all-fuel will have 1.80" intake valves. Valve size is the ONLY difference between a gasoline head and an all-fuel head.

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