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Need advice on bottom overdrive pulley for LT4

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Old Mar 29, 2026 | 05:52 PM
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Default Need advice on bottom overdrive pulley for LT4

So I'm getting close to getting everything together. It's been over a long year collecting parts. Given exspensive parts and labor constraints. I was thinking about using the stock LT4 supercharger temporarily (With 30 sum K miles) and using a overdrive pulley for a little more boost. Some info about what build we are doing. We pulling the dry sump LT1 engine out and rebuild the motor for boost. Diamond forged pistons, Compstar Rods, DOD delete and VVT delete. Bigger Cam etc,, CHS trunion upgrade LT4 HPFP and LT4 injectors, many more parts, everything to get this motor prepared for boost. Then doing the LT4 supercharger conversion on the LT1 platform.

I was looking at different pulleys ( That will fit the ATI917315 damper) like DSX ect... And I ran into the Lingenfelter 6.2L LT4 5%/ 10% / 15%/ 20% Supercharger Overdrive Pulley L220685505. And I can't find any info if this Lingenfelter pulleys will fit the ATI 917315 damper? The Lingenfelter Damper looks identical to the ATI dampers. And the Lingenfelter pulleys look identical to the DSX pulleys. Has anyone had experience with using Lingenfelter pulleys on ATI dry sump dampers? Also what percentage of overdrive pulley would you start with? I really don't want to spin the stock LT4 blower to hard until i can send it to Kong performance for Xporting & rebuild. Highly appreciate your time in advance. Any advice would be greatly appreciated. Have a blessed day.


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Old Mar 30, 2026 | 08:49 AM
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6 bolt is what your looking for to ad to a ati super damper . doesn't really matter what brand. what you will find is you need the dsx countersunk bolts to attach it as ati using a Torx head bolt (dont ask me why!). Dave will sell you a set if you email him they aren't listed on his page.

most people use a 9.45 lower then play with upper pulleys to ad boost also adding in a dsx idler kit to help with belt slip. a 9.84 is about as big as you can go.
I have a 9.06 lower im not going to use can get you a deal on it. where in tn are you im in the bro close to nashville
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Old Apr 1, 2026 | 01:39 AM
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Originally Posted by 9sec
6 bolt is what your looking for to ad to a ati super damper . doesn't really matter what brand. what you will find is you need the dsx countersunk bolts to attach it as ati using a Torx head bolt (dont ask me why!). Dave will sell you a set if you email him they aren't listed on his page.

most people use a 9.45 lower then play with upper pulleys to ad boost also adding in a dsx idler kit to help with belt slip. a 9.84 is about as big as you can go.
I have a 9.06 lower im not going to use can get you a deal on it. where in tn are you im in the bro close to nashville
Sorry just now seeing this. I appreciate your response that helps alot. I own a foundation repair company here in middle Tennessee. My office is currently being moved out of Murfreesboro. I work all over middle Tennessee for the last ten years. Especially around Nashville, Smyrna, Murfreesboro, Franklin, Brentwood, etc.. Good to see a fellow Tennessee guy around here. Yeah i like to have multiple pulleys to play with. I'll hit you on pm about the pulley tomorrow. Thanks a million 😊
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Old Apr 1, 2026 | 07:07 AM
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Originally Posted by Allen650HP
Sorry just now seeing this. I appreciate your response that helps alot. I own a foundation repair company here in middle Tennessee. My office is currently being moved out of Murfreesboro. I work all over middle Tennessee for the last ten years. Especially around Nashville, Smyrna, Murfreesboro, Franklin, Brentwood, etc.. Good to see a fellow Tennessee guy around here. Yeah i like to have multiple pulleys to play with. I'll hit you on pm about the pulley tomorrow. Thanks a million 😊
sure swing by my house I’ll show what you need to look for. I’m in tge boro southside
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