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International Automotive Technicians Network
Re: 3800 GM upper intake
Posted to Technical Discussion Forum on 2/1/2013

Hi All:

Just got this car back together. Visual inspection of front of converter looks good. Honeycomb looks like new. Backpressure test results were, at idle 0 psi,2500 rpm .5 psi, snap throttle 3psi. I am thinking at this point that the sleeve got loose an... Login to read more.