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02-11-2020, 08:28 AM
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#1 |
          
Drives: 2017 ZL1 A10 & 2021 BMW M340i x Dr Join Date: Mar 2009
Location: Tampa
Posts: 5,110
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Stock Pulley sizes
I see lots of post on pulley swaps, but i don't know what the stock upper and lower sizes are. Can someone please post the stock sizes.
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Sold 2012 2LT RS 12.3@112 old setup
Sold 1967 Camaro Pro Street. Ran 10's mild BB on NOS. 2017 HyperBlue ZL1 A10 ** Born 3/17/17**Delivered 4/08/17 2020 Build: Mag2650, BTR Stage2, NW103, BG, 14% lower, 90mm upper, ARH 2" Long system w/no cats, SW Legend mufflers. **807hp/762tq on 93 gas** and **848hp/792tq on e47** Sold 2018 (Go Mango) Dodge Charger Daytona 392 Daily Driver Daily Driver 2021 BMW M340i Xdrive |
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02-11-2020, 09:23 AM
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#2 |
Drives: 2019 ZL1 Crush Join Date: Jan 2019
Location: Colorado Springs
Posts: 564
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I had asked that question some time back is this is what I believe to be true
8" lower and 2.5" upper
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2019 Crush A10
E-Force 2650 670WHP 615WTQ All besides the 2650 is bone stock down to the air filter. |
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02-11-2020, 09:26 AM
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#3 | |
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Drives: 2017 ZL1 A10 & 2021 BMW M340i x Dr Join Date: Mar 2009
Location: Tampa
Posts: 5,110
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Quote:
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Sold 2012 2LT RS 12.3@112 old setup
Sold 1967 Camaro Pro Street. Ran 10's mild BB on NOS. 2017 HyperBlue ZL1 A10 ** Born 3/17/17**Delivered 4/08/17 2020 Build: Mag2650, BTR Stage2, NW103, BG, 14% lower, 90mm upper, ARH 2" Long system w/no cats, SW Legend mufflers. **807hp/762tq on 93 gas** and **848hp/792tq on e47** Sold 2018 (Go Mango) Dodge Charger Daytona 392 Daily Driver Daily Driver 2021 BMW M340i Xdrive |
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02-11-2020, 10:25 AM
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#4 |
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Dyno Show Queen LOL
Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014
Location: Houston
Posts: 4,345
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Going by ATI"s page and available blower pulleys for the LT4 CTSv/ZL1 2016 plus
916153 2.5% Overdrive has a diameter of 7.835 So the lower is under 8 inches if 7.85 id 2.5% more. Of course ATI could be wrong. http://www.atiracing.com/products/da...mserp.htm#CTSV I've always heard the the stock lower us 7.7 something.. As for the upper... Metco says 2.5 https://www.metcomotorsports.com/pro...p?prod=LT42.30
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 Kong Ported 2650, Crawford Racing Port Injection, Weapon X 112mm Adapter, NW112mm TB, Livernois Ported LT4 Heads, Lingenfelter GT32 stealth cam, Haltech Elite, and Carbon by Trufiber Last edited by EDFHOBBIES; 02-11-2020 at 01:46 PM. |
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02-11-2020, 11:21 AM
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#5 |
Drives: 2018 ZL1 Garnet Red Tintcoat A10 Join Date: Jan 2019
Location: NY
Posts: 537
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Stock pulley is 2.5in upper and 8in lower.
Smaller upper = more OD Larger lower pulley = more OD WeaponX has a good chart with alot of good information |
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