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After researching the forum and other places on the internet, and after rebuilding my 3rd member, I discovered that I have an original 55' axle housing with a 1963 3rd member. 3725899 casting done on April 4, 1963-->D463, built at Buffalo, NY on April 11, 1963-->BB0411. All the bearings, races, shims and seals I bought were for a 55'. I really hope they are the same for the 63'. I will be running a 350 pre 87' 010 block and a 92' 700r4 with the 63' 3:36:1 gears. Will this make a good crusier? (no hot rod here). Thanks....Ted
 

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Trifive Automotive Electrical Wiring Expert
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After researching the forum and other places on the internet, and after rebuilding my 3rd member, I discovered that I have an original 55' axle housing with a 1963 3rd member. 3725899 casting done on April 4, 1963-->D463, built at Buffalo, NY on April 11, 1963-->BB0411. All the bearings, races, shims and seals I bought were for a 55'. I really hope they are the same for the 63'. I will be running a 350 pre 87' 010 block and a 92' 700r4 with the 63' 3:36:1 gears. Will this make a good crusier? (no hot rod here). Thanks....Ted
That's what I'm running. It has plenty of get up an go for me and cruises at 75 around 2000 RPM.
 

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I have a 283, punched 30 over, with a 700R4 and 3.36 gears. It gets up and goes. I am happy with it.
 

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I have the same setup, too.

Good pickup, great cruising on the highway...not so happy with my fuel mileage.
 

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265 V8 with 700R and 3.36 here.....Works for me :):tu
 

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The 700R4's .70 O.D. gear with a 3.36 axle is the equivalent of a TH350 with a 2.35 axle. Both make for very low revs at highway speeds. Actually, the .70 gear will appear to be even taller when the converter locks up and the revs drop 200 RPM or so. For a 350 with a mild cam, that should work OK. However, an engine with a high performance cam, or a car with tall rear tires might like a 3.55 or 3.70 better to keep the revs up a bit higher.

But since you have the 3.36 gears, you might as well try them.

I have to say I'm really surprised that a 283 or 265 would work well with a 700R4 and 3.36 gears. I would have guessed that in O.D. with the converter locked up that those little engines would be would be running at RPMs near the bottom of their torque curves.
 

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I have to say I'm really surprised that a 283 or 265 would work well with a 700R4 and 3.36 gears. I would have guessed that in O.D. with the converter locked up that those little engines would be would be running at RPMs near the bottom of their torque curves.
When the TQ locks up it runs about about 1800 RPM at 65-70mph. Without TQ locked up it runs about 2000 RPM. I have only about 400 miles on this setup but I am well pleased with it, decent fuel mileage @ 17gph, good passing power/speed and engine is just purring...

I do have a Edlebrock 2703 intake, a 1406 carb and a 2102 cam.
 

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I have a 350 with the 700R and 3.08's, at 65 I am at about 1400RPM, below the power band and have to pretty much shift out of OD when I get to a hill unless I punch it and kick it down. I have been thinking of getting 3.36 or 3.55 to help keep the RPM's up.
 

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I run 4:11 gears, 50 series 15" tyre, with TH700 behind a stout 406sb. It sits on 2400rpm at 60mph.
We get 16mpg on a trip while towing a small camper. I haven't done a mileage check without towing but it would have to be 18 or more mpg. Not too bad for an 11 second car. I think with a smaller motor I would go to 3:7 gears.
It all depends on cam etc that defines the sweet spot that your engine likes to sit on without labouring or over revving.
 
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