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Old 05-04-2010 | 11:46 AM
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MetallicaJunkie
 
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From: Donna, TX
Default RE: Evolution 61

ORIGINAL: plaurence

Can anyone tell me how O.S. labels their mufflers? I have two that say 744 with different bolt patterns.
The 744 came out in 1970's or so and was used on the 60/61 FSR line of engines, which had a bolt on muffler...then sometime in the mid 80s they came out with the SF (61)l.. that 61 used the same 744 muffler but has a bolt through pattern
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