s trim pulley

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Nov 7, 2009 | 12:50 PM

jeepbeast

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Joined: Jul 2003

Posts: 259

From: newport, mich

s trim pulley

i plan on getting a 2.75 pulley and am wondering if there is a difference between the specific lt1 pulley and the other ones? part numbers are 2A038-275(universal) and 4GH038-275(lt1)?

Nov 8, 2009 | 11:03 AM

ponyackn

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Joined: Jan 2002

Posts: 990

From: Sac to SoCal

Yes, there's a difference. Definitely specify, this is what happened in my situation:https://www.camaroz28.com/forums/sho...58#post6165858.

Nov 12, 2009 | 09:09 AM

blown94

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Joined: Oct 2004

Posts: 1,228

From: Florida

How much boost will a 2.75 make on an s-trim with the stock crank pulley? How about with a 7" crank pulley?

Nov 14, 2009 | 08:34 AM

Kevin Blown 95 TA

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Joined: Oct 2001

Posts: 2,684

Maybe 12+ , but boost also depends on your intake tract, heads & valves, etc... how well they flow. To some extent, more restrictive=higher boost.

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