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02-19-2024, 12:56 PM
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#1 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,787
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Re: tire sizes
Easiest and cheapest way is to reduce speed to 64 mph. A 6mph drop equals about 240 rpm.
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02-19-2024, 01:26 PM
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#2 | |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,672
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Re: tire sizes
Quote:
Back in the days of 55-65 mph speed limits, I put several thousand freeway miles on the truck. Heck, now a 70 mph speed limit essentially means 75-80 here in Texas, which the truck simply doesn't like. Funny, because I remember driving freeways in cars with 27" tires and 3.7x gears back in the day, and we never even thought about needing another gear. Had a friend with 4.11 gears in a 60s Corvette who used to drive a 500 mile round trip twice a month to see his girlfriend. He said the same thing -- he doesn't remember the high revs being an issue. Heck, I'll probably just end up with an OD trans, but then my 3.08 gears will be a little tall. Damned if I do...
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Mike 1969 C10 LWB -- owned for 36 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- converted from 250-six to roller cam 350, Vortec heads -- sold 1981 C10 Silverado LWB, 305, TH350C -- 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 24 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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