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11-13-2009, 11:52 PM | #1 |
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78 diesel rear end!
ok i havent got around to checking the ratio of my rearend all i can say is it was factory 5.7 diesel with and automatic transmission it has a 12 bolt in it oh i brought the truck off the original owner any idea what it could be with out popping the plate off
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11-14-2009, 12:05 AM | #2 |
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Re: 78 diesel rear end!
diesel probably 2.88's
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11-14-2009, 12:26 AM | #3 |
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Re: 78 diesel rear end!
I had a 82 1/2 ton with the 6.2 diesel and it came with a 700r4 and 3.73 rears.
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11-14-2009, 12:41 AM | #4 |
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Re: 78 diesel rear end!
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11-14-2009, 12:55 AM | #5 |
Badass
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Re: 78 diesel rear end!
pop the cover off.and start counting,and its probly time to change the gear oil anyways. and just use some RTV and seal it back up
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11-14-2009, 01:21 AM | #6 |
At the body shop.
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Re: 78 diesel rear end!
The diesel rear i had on the 77 was 2:73s.
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11-14-2009, 09:15 AM | #7 |
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Re: 78 diesel rear end!
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11-14-2009, 06:27 PM | #8 |
At the body shop.
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Re: 78 diesel rear end!
Yes. But the 80 that was sitting at the local junkyard with the axle pads already welded on the bottom of it fit just right in my 77.
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" That didnt make it any newer " " Dont antique the equipment " |
11-14-2009, 08:20 AM | #9 |
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Re: 78 diesel rear end!
The standard axle gear in 1978 for the C10 diesel pickup was 2.76 ratio.
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11-14-2009, 11:50 PM | #10 | |
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Re: 78 diesel rear end!
Quote:
if i punch the accerator on my truck it frys the tyres got me thinking its 3.42 Last edited by 78-5.3; 11-14-2009 at 11:53 PM. |
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11-15-2009, 10:53 AM | #12 |
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Re: 78 diesel rear end!
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11-14-2009, 08:39 AM | #13 |
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Re: 78 diesel rear end!
I think you could do a search on here on how to figure out what your rear diff gear ratio is. If memory serves me correct, you can do this: for posi rear jack up rear end (both rear wheels off the ground), spin tires one rotation, count rotations of drive shaft, example on tire spin to 3 and 3/4 drive shaft spins equals roughly 3.73 gear ratio. If it is an open diff ( one tire burn out), jack up one tire, spin it two rotations and count drive shaft rotations, two tire rotations and 3 3/4 drive shaft rotations equal roughly the same 3.73 rear gear rotation. In either instance, the amount of rotation of the drive shaft gives you roughly the rear gear ratio, 3 rotations = 3.00 ratio, 4 rot = 4.00 ratio, etc. I am sure this is one way to roughly get your gear ratio, if I have misspoken someone will chime in correct me.
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11-14-2009, 09:07 AM | #14 |
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Re: 78 diesel rear end!
my 81 has a 3.08
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11-15-2009, 12:42 PM | #15 | |
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Re: 78 diesel rear end!
Quote:
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11-15-2009, 12:48 PM | #16 |
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Re: 78 diesel rear end!
my 79 is the 3.08.
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