Re: rpm's surging at around 30-50 mph! HELP, Is it the Shi@Ty GAS!
could be torque converter clutch coming on and off. What speed are you driving? Not likely to be the throttle body, could be though.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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