Three speed Saginaw top speed ?

[special-K]

My buddy has a '55-1st series 6cyl/spd. He put a 3spd O/D in along with a '72 rear with 3.08s. He didn't like the free-wheeling feel going down hill and pulled the O/D. We now have a '72 full-synchro Saginaw 3spd with that '72 3.08 rear and that thing buzzes right on up the hiway. Plenty of pull on the hills and she rolls on out off the line w/o slipping the clutch. I think it has 235/75-15s on it

[Moneymatt448]

Originally Posted by 54belair

Gear the truck for what youre going to use it for:

If you want a heavy pulling, heavy hauling truck--then stay with a 4.11 gear. If you do mostly town driving and no or little towing then a 3.73 will be perfect.
If you are building a cruiser and wont be towing and want good hiway speed cruising then go with the 3.08 (or even a lower numerical) gear.

As far as "performance" off the line---depending on yur engine, tires, etc, you can launch one of the trucks as well with a 3.08 as you can a 4.11.

Im using a car 4 speed and a 3.08 in mine (when it hits the road again) and I can guarantee that combo will smoke any tire I might run. In my other street machine (the 54 chevy hardtop) Im running a mild 350, a th350 and a 2.56 rear----it weighs as much as a short truck, and it will get it off the line and pulls like crazy in second.

Anyway, just saying,, make life cheap and simple----dont kill your wallet with a 4.11 when a 3.08 might do!!

Hey I have a mild 350 with a three speed on the tree not to sure on my rear end but I'm want my truck for crusin and no towing and maybe a rear end with something that's good off the line what is a good combo to go with if you don't mind letting me in on some info
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[1968aj]

Originally Posted by Tx Firefighter

If the truck has some form of solid fan in it rather than a fan clutch, it will sound more frantic too. A solid or flex fan spinning fast sounds like an extra 1000 rpm to your ear when going down the highway.
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you are not kidding. one of my trucks had a bad fan clutch that stayed locked in. when I replaced it it sounded like I added overdrive to it. sure quietened it down