318 Belt Size

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318 Belt Size

Postby Tuggle » Tue Feb 27, 2018 9:29 am

Anyone know the belt sizes for a standard 318?
"Deplorable", 1975 32' Express, Twin 318's, Raw Water Cooled, Lake Lanier, Ga.

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Re: 318 Belt Size

Postby javalin390 » Tue Feb 27, 2018 7:26 pm

I can tell you mine, not sure if 318 and 360's are the same. Mine is also a 1975 with 360's and Sherwood single pocket raw water pumps and use a NAPA number 25-7430 for the raw pump and a 25-7459 for the alternators. Hope this helps, still have the old ones?
Jim Elias
1974 37' SedanFlybridge
Twin 360 Chryslers.
Marblehead, Ohio

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Re: 318 Belt Size

Postby Fastjeff » Wed Feb 28, 2018 6:47 am

If in doubt, take the belt to NAPA (or another GOOD auto store) and they'll match it up for you.

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Re: 318 Belt Size

Postby Wilfred » Sat Jul 07, 2018 11:48 pm

For 1984 LM 318B...water pump belt is 15460..Mopar 4027313
Alternator belt is either 15425 or 15430..15430 is a 1/2 inch longer
I am changing one tomorrow and going w/ 15425, will update
W. J. Brockman
1984 Marinette Express Bridge
Twin 318s 235 hp
Bolles Harbor, Michigan