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Re: Oil pressure at idle
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What where the standard gear ratios offered in 67 on the LWB, 3-speed Sag with the 283?
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I don't know but I have a tach that reads way too high. They did make a lower gear than 4.10 but you would definitely be buzzing at 75 or even 65.
Check the ratio again carefully (turn the wheel and multiply the DS revs by 2 with an open diff.and one wheel stationary). Temporarily hook up a shop tach and check your accuracy too.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.
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