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Old 12-02-2009, 09:48 PM   #5
jrpxxii


 
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Drives: 2010 Camaro SS/RS 427ci
Join Date: Jul 2009
Location: Bowling Green, Ky
Posts: 3,210
No disrespect to your tuner but why is 3.4 as safe as he would go if he cant tell you how many psi it will turn with 3.4? With a 3.4 you won't see any difference. Here is a reference guide as to pulleys and boost. I am now running a 2.80" at 12psi and can run pump gas at 93 octane with no issues. I don't run pump gas, as I have my car tuned for 110 race gas but just telling you that changing a pulley at 10psi or less isnt going to harm anything running pump gas.

The stock boost for any Magnacharger TVS 2300 Supercharger Kit installed upon any 2010 Camaro 6.2L V8 with a 3.30" Magnacharger Pulley installed on it is only 7 psi at wide open throttle.

- 3.10" pulley: expect 2.0 psi. more boost over stock pulley -Total boost 9.0 psi
- 3.00" pulley: expect 3.0 psi. more boost over stock pulley -Total boost 10.0 psi
- 2.90" pulley: expect 4.0 psi. more boost over stock pulley -Total boost 11.0 psi
- 2.80" pulley: expect 5.0 psi. more boost over stock pulley -Total boost 12.0 psi
- 2.70" pulley: expect 6.0 psi. more boost over stock pulley -Total boost 13.0 psi
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