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Re: Intake question for the engine guru's....
The RPM kicks in about 2500 rpm iirc....the performer starts at 1500 and will give you more low end torque. I had Vortec heads on mine and wasn't that impressed, there's better heads out there for sure.
The 268 cam will help a bunch.
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Kelly
'05 GMC Sierra SLE Z71
Bone stock except for new bed rail caps.
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