3.12 pulley belt size

Stanger00

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113" belt is the stock belt with a 3.6 pulley. According to belt wrap contact law the difference in size should be about a 1/3" difference. If you can find a belt in the 112" range it should work.

If you get a 10% overdrive crank then a 113" belt is the best fit. What I use but I had to get a Thump Racing Tensioner because I kept shredding belts.
 

98 Roush

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I'm starting from scratch Slo984. Hey stanger I'm keep seeing on Web people using 107.3 belts. I not going to run a 10% overdrive pulley yet. So you think a 112 would work? I also have the stock tensioner.
 

Stanger00

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I'm starting from scratch Slo984. Hey stanger I'm keep seeing on Web people using 107.3 belts. I not going to run a 10% overdrive pulley yet. So you think a 112 would work? I also have the stock tensioner.

96-99 2 valves have a 3 bolt tensioner. The 3 bolts use a longer belt over the single bolt tensioner 2 valves. I used to run a 107.3 when I had a single bolt tensioner and the 3.12 pulley.

Try to find a 112.5 or 112.3 if you can. I don't know if there are part numbers for those sizes.
 
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SVTPete83

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Go napa. Ask for a heavy duty gates belt. They are green and last much longer than the standard gates belts
 

01yellercobra

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Just in case they don't have the right size check AC Delco. Gates doesn't have an HD belt in the size I need, but AC Delco does and it's a green HD belt.
 

Brutal Metal

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Let me get you the part #, I actually got a new Gates 112" off a guy on ebay last month for under $30~ OK it's GATES K061123, that one is 3/4 of an inch shorter than the 113..
 

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