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Pulley size and boost levels

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Old 09-15-2017, 11:31 AM
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Originally Posted by flatblack83
Since this was restarted i'll add mine, 03 6.0 1 3/4 stainless works headers, 3 inch dual exhaust, 220/232 cam, 10% od, tvs1900 with a 2.6 pulley i see 14.5 psi in cool temps.
Are you still running a stock short block?
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Old 09-15-2017, 12:29 PM
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I got 383 with tvs2300. 1 7/8 headers with 3" duel into borla xr1's. 228/232 trick flow heads. 10% overdrive . 3" pulley sees 9psi
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Old 09-15-2017, 09:34 PM
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2015 5.3 tvs1900 w/ corsa catback

3.4 = 6# (stock pulley)
w/ CAI 7.5# (GMPP K&N eta: & BBP tune)

will update after i install new pulley soon
Last edited by gat0r; 10-10-2017 at 09:16 PM.
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Old 09-15-2017, 09:47 PM
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I made this sticky so others who are new to supercharging or changing pulley's will have something for reference.
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Old 10-08-2017, 01:46 PM
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Nobody running a Whipple?
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Old 10-09-2017, 11:41 AM
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There are a few. We just need to get them to chime in here...
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Old 10-09-2017, 05:54 PM
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Ok, I'll chime in. I have a Whipple 2.3 on an LQ4 with 216/224 cam and 1 7/8" ARH headers. Haven't had it on long but I'm still on the 3.75 pulley that it came with. Before the cam and headers I was getting 8 lbs, now it's 6.5. I blew up the 4l60 and just installed a Performabuilt Level 3 with 2800 stall so I'll run this for awhile before I go to a 3.5 pulley and will update when I do. 2002 Yukon Denali.
Edit: I ordered a 3.375 pulley today.
Last edited by Rocket Man; 10-10-2017 at 03:11 PM.
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Old 10-09-2017, 07:03 PM
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I have a sidemount
, making about 10 psi with a 2-5/8" pulley. (that was on a 408)
Last edited by MikeGyver; 03-07-2022 at 07:49 AM. Reason: Different engine in signature
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Old 10-10-2017, 04:30 PM
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Originally Posted by Rocket Man
Nobody running a Whipple?
Whipple 2.9 on an LQ9. 1 5/8 headers with 2.5" exhaust.

3.625 pulley - 11#
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Old 10-10-2017, 09:08 PM
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Originally Posted by gat0r
2015 5.3 tvs1900 w/ corsa catback

3.4 = 6# (stock pulley)
w/ CAI 7.5# (GMPP K&N)

will update after i install new pulley soon
You picked up 1.5lbs of boost from installing a new intake?
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