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Re: 1991 chevy 1500 5.7 tbi erratic idle
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Originally Posted by FordeatinZ71
ok, maybe i've missed this...how are you running a '78 cam in a '91 block? the '91 is a roller cam...the '78 is not...again, maybe i missed it as i just skimmed this.
are you sure it's firing on all 8? might wanna do a compression test. have you replaced the coil or ignition module yet? those can both cause weak spark and the ignition module can cause the injectors not to work right.
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91 is not a roller cam.
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