1985 Chevy Truck no power uphill--correcting previous question.
Have a 1985 Chevy Truck 1/2 Ton, 350, 700R4. Will not exceed 45-50 MPH
up hill with foot to floor. Especially backs down when pulling light trailer. New
plugs, filters, tune etc. Please advise on sequence of event to check out.
Is the transmission down shifting?
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