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Old 11-25-2019, 09:48 AM   #1
Kedavis
 
Drives: 2017 garnet red ss
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What length belt for ATI underdrive pulley

Nobody seems to know,not even the people who make it. Which is kinda crazy,title says it all. Any help is appreciated..thanks
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Old 11-25-2019, 11:28 AM   #2
driven2exceSS
 
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For ATI Part #918857 I used NAPA Belt #25-060560. This Belt was recommended by others here on the forum who did the install prior to doing it myself. All is good here!!
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Old 11-25-2019, 11:53 AM   #3
Kedavis
 
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Awesome so it is a 56 inch belt..thanks
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Old 11-25-2019, 12:11 PM   #4
7speed
 
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Quote:
Originally Posted by driven2exceSS View Post
For ATI Part #918857 I used NAPA Belt #25-060560. This Belt was recommended by others here on the forum who did the install prior to doing it myself. All is good here!!
Thanks, also does it come with a bolt or do we need to buy another or reuse stock?
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Old 11-25-2019, 12:21 PM   #5
driven2exceSS
 
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Quote:
Originally Posted by Kedavis View Post
Awesome so it is a 56 inch belt..thanks
Yw

Quote:
Originally Posted by 7speed View Post
Thanks, also does it come with a bolt or do we need to buy another or reuse stock?
Does not come with a bolt. Do not reuse stock. Buy a replacement stock OEM Crank bolt, or an ARP bolt #234-2503. The stock bolt washer/flange will need to be ground down a hair to fit in the ATI UDP.
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Vert 2SS, NPP, MRC, 20% tint, Blk Ties, "SS" center & stem caps, Tinted side & rear reflectors, OEM 1LE Splitter, OEM ZL1 Rockers / 3rd Brake / Darken tail lights, OEM Blk rear splash guards, Satin hood wrap, Fuse pull, Sound tube foam removed, Cat delete, Mamo Ported TB, Pray ported stock IM, Dry RotoFab, ARH 1 7/8 headers, E85, "Performance Dyno" Tune, BMR springs, "Track" alignment, Hawk DCT-70/70's, Red powdered calipers, MRR M017's w/ GY SC 3's (285/305 30's), FE4 Vert swaybars, Brake cooling ducts, ATI 10% UD, Vorshlag camber plates, APR Splitter Extension, Velossa BIG MOUTH Ram Air, QA1
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Old 11-25-2019, 01:57 PM   #6
7speed
 
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Quote:
Originally Posted by driven2exceSS View Post
Yw



Does not come with a bolt. Do not reuse stock. Buy a replacement stock OEM Crank bolt, or an ARP bolt #234-2503. The stock bolt washer/flange will need to be ground down a hair to fit in the ATI UDP.
Thanks,

I been sitting on my ATI, until I do a cam maybe.
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Old 11-25-2019, 03:50 PM   #7
Kedavis
 
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Use an ls3 bolt and you wont have to grind it.
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