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05-21-2020, 03:17 PM
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#1 |
 
Drives: 2018 ZL1 Garnet Red Tintcoat A10 Join Date: Jan 2019
Location: NY
Posts: 537
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ARP balancer crank bolt
I am getting ready to intall a new lower pulley and ATI balancer. There is two bolts that are referenced for the swap. 234-2503 and 234-2504. Which is the correct one I did read somewhere else that the 234-2504 was too long but it was the recommended one?
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05-21-2020, 04:17 PM
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#2 |
         
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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2504 is for the LS7 which is dry sump and has a longer crank snout. Use the shorter one.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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05-21-2020, 04:42 PM
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#3 |
 Drives: 2018 Camaro ZL1 Join Date: Feb 2011
Location: Midwest
Posts: 255
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Here ya go!!
 Sent from my SM-G960U using Tapatalk
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AudioControl 2x LC6.1200, LC1.1500, Audison Bit One Virtuoso, Bit Play HD, Frogs, M650, JLA 12W6
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05-22-2020, 05:19 AM
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#4 |
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Drives: 2018 ZL1 Garnet Red Tintcoat A10 Join Date: Jan 2019
Location: NY
Posts: 537
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Why are some people saying that the longer 234-2504 ARP bolt is the one?
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05-22-2020, 06:38 AM
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#5 |
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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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Just use the ATI bolt.. people screw up here all the time its supposed to be a LS bolt for correct length and most importantly correct flang size to seal and not to crush drawing damper on.. here some useful stuff...
ATI 918856 Damper ATI 916227 or Lingenfelter L220170709 9.17 pulley GATES Greenback k080845HD for 9.17 ring LS1 ATI 951499 damper bolt summit NGK 6510 1 step cooler plugs
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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 |
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05-22-2020, 06:51 AM
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#6 |
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Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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I recently used ARP 234-2503 bolt. No issues. A comparison:
 Note this was on an LT1 with LT4 balancer, but believe they are same.
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05-22-2020, 02:12 PM
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#7 |
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Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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some LT4s are dry sump (Z06) and likely require the longer bolt like the LS7
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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05-22-2020, 03:09 PM
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#8 |
 Drives: 18 ZL1 mostly stock Join Date: Jan 2020
Location: NJ
Posts: 89
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I used the ARP 2503 when I put mine back together. If you use this bolt make sure to put some sealant on the face of the washer that goes into the balancer. if you don't you will have a good chance of an oil leak sooner or later, the factory bolts come with sealant already applied and the ARP does not.
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07 LMB Z06 Cartek 4x heads and cam, ARH, Vararam, FAST 102, NW 102
18 ZL1 M6 MTI cam, FED heads, FBO's |
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09-22-2020, 09:11 PM
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#9 |
Drives: 2016 Camaro 2SS, NPP, A8, FBO, E85 Join Date: Oct 2016
Location: Springfield,VA
Posts: 884
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Hey guys is the 234-2503 the only bolt we need?
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Well............ At least you tried. lol
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