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Re: Rear Posi (is it worth the money)
1969Stepside -- Nice 327 build!
Maybe I missed it, but I didn't see which transmission your truck has, or how tall the rear tires are. Those are factors in determining which axle ratio to use for spirited performance. Your 3.08 may work fine if the trans is a TH350 with a slightly higher stall converter and/or 26-27" tall rear tires. But with 29" tall tires, things may be a bit sluggish, especially with a 327 and a 219/227 cam.
My 69 once had a mild 383 with a 3.08 axle, and a TH350 with Hughes 2000 converter. That thing would smoke the tires in low gear and do a serious chirp on the 1-2 shift. However it probably made at least 50 lb/ft more torque than your 327.
Looks like a good site to calculate and compare tire dimensions.
https://www.calculator.net/tire-size-calculator.html
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Mike
1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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