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Old 11-15-2004, 04:58 PM   #1
70short
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Question Rear Gear

Does anybody know the gear ratio of A 69 chevy 3/4 ton 396 Turbo-400 trans. The truck is all stock.

Gary
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Old 11-15-2004, 05:12 PM   #2
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3.54 more likely than not.
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Old 11-15-2004, 05:22 PM   #3
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Longhorn Man Would you know the gear ratio in my 70 1/2 ton 4-speed (original truck trans).350 engine. THANK YOU VERY MUCH!!!!!


Gary
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Edel 600 cfm carb
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Old 11-15-2004, 05:34 PM   #4
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its all about the +6 inches
 
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3.07 acording to the books.
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Old 11-15-2004, 10:52 PM   #5
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I thought the 3/4 ton only had two choices. 4.57 with the 4 speed, 4.10 with the automatic.
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Old 11-15-2004, 11:06 PM   #6
Robert1970C20rstbukt
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If it has an Eaton rear end it could have 4:11's, mine does. Originally had a 350/TH350, now has a 350/TH400.
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Old 11-15-2004, 11:22 PM   #7
Longhorn Man
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the big block trucks usually got the dana, and acording to the GM catalogs, came standard with the 3.54 gears. I would have to look, but I don't remember seeing an option gear for 396/402 trucks.
This is why I would give my left nut for a one ton big block rear axle. Caddys don't like to rev up much.
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Old 11-15-2004, 11:27 PM   #8
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Quote:
Originally Posted by Longhorn Man
...I would give my left nut for a one ton big block rear axle...
i got one but i dont take left ones just right ones j/k
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Old 11-16-2004, 12:04 AM   #9
Longhorn Man
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OK...let me rephrase....
I would give my left nut for one in my area that is affordable.

There...I feel better now.
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Old 11-16-2004, 12:30 AM   #10
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Andy, I thought the dana 60 only came in the 3/4 ton trucks and the 1 tons all got the Eaton HO72.

Oh, and PM sent.
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Old 11-16-2004, 12:33 AM   #11
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Hmmmm, right you are.I'll have to look up the one ton big block stuff tomorow.
Good catch.
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