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Old 12-23-2022, 03:07 PM   #1
ChadSZL1
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Talking LME lower size?

Does anyone know what size lower pulley LME is running on their 850 flex package? I am currently running an 8.66 Lower and with the cam I just barely over stock boost. Trying to squeeze another 30-40rwhp with the addition of the DSX aux pump and a lager pulley.

Last edited by ChadSZL1; 12-23-2022 at 04:39 PM.
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Old 12-23-2022, 03:52 PM   #2
JSH


 
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Quote:
Originally Posted by ChadSZL1 View Post
Does anyone know what size lower pulley LME is running on their 850 flex package? I am currently running an 8.66 Lowe and with the cam I just barely over stock boost. Trying to squeeze another 30-40rwhp with the addition of the DSX aux pump and a lager pulley.
FWIW, my HPE 850 pkg. includes a 9.18 lower. They're both in the same city and it's a small industry, so that would be an obvious guess.
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'20 ZL1 1LE A10.
LME 390, E2650, FBO, 100 oct.
1116/967.
1.35/9.25/151 at 3500 ft. (only one pass)
15" conversion/MT ET Street R 325/50R15.
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Old 12-23-2022, 04:40 PM   #3
ChadSZL1
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Thanks JSH! What boost does that put you at? I am guessing 12-13 psi?
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Old 12-24-2022, 09:08 AM   #4
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I would Port the blower or look for one already done. Better than a pulley swap...makes more boost without spinning it harder.
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Old 12-24-2022, 09:28 AM   #5
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Originally Posted by KingLT1 View Post
I would Port the blower or look for one already done. Better than a pulley swap...makes more boost without spinning it harder.
^I’d listen to this guy. You don’t have to pulley to make power on an LT4 and the extra heat is a power killer.
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Old 12-24-2022, 11:15 AM   #6
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Originally Posted by ChadSZL1 View Post
Thanks JSH! What boost does that put you at? I am guessing 12-13 psi?
Going back to those first logs, yea, 13 psi is about right.

What does LME's pkg. include?
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'20 ZL1 1LE A10.
LME 390, E2650, FBO, 100 oct.
1116/967.
1.35/9.25/151 at 3500 ft. (only one pass)
15" conversion/MT ET Street R 325/50R15.
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