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sleepertruck72 02-16-2008 03:52 AM

new rear end
 
I have a 72 c20 with a new 330 hp 350 ci crate motor. Holley 600 700r4 and I have a Dana 60 with 4.10 gears. How hard would it be to get a rear end from a newer 2500HD to bolt up to the frame and be able to have rear disk brakes ? Or should I just keep the one I got ? I use the truck mostly for work. I do tile work and general construction so I do carry alot of weight usually. Would 3.73 gears be better or worse ? Thanks !!!:metal:

greasy68 02-16-2008 04:01 AM

Re: new rear end
 
3.73 gears would probably make it a litlle more daily driver friendly. It would probably be pretty hairy to swap a new HD rear end in. It would probably be easier/cheaper to just buy one of the rear disc kits from a site vendor.

69halfton 02-16-2008 04:09 AM

Re: new rear end
 
if your pulling alot of weight around, and your not doing a whole lot of freeway driving, you'l really miss your 4.10 gears.

they make a world of difference in terms of low end torque.

what a nice job getting to drive around in a c20 :metal: ...are you hiring? :lol:

chrislehr 02-16-2008 04:27 AM

Re: new rear end
 
Someone in here must know - 1970 Custom 10 - what rear end is this?

http://i213.photobucket.com/albums/c...0/IMG_0216.jpg

chrislehr 02-16-2008 04:29 AM

Re: new rear end
 
trying to match using:
http://www.drivetrain.com/gmdanadiffgaskets.jpg

crazy longhorn 02-16-2008 04:38 AM

Re: new rear end
 
Quote:

Originally Posted by chrislehr (Post 2579977)

8.875 /12 bolt......the gasket is turned 90degrees on the chart....

crazy longhorn 02-16-2008 04:42 AM

Re: new rear end
 
Quote:

Originally Posted by 69halfton (Post 2579948)
if your pulling alot of weight around, and your not doing a whole lot of freeway driving, you'l really miss your 4.10 gears.

they make a world of difference in terms of low end torque.

what a nice job getting to drive around in a c20 :metal: ...are you hiring? :lol:

I agree, if you are runnin a 700 r4, I would leave that big dana in there. Even on the highwy, she will run easy with that .7 OD. Thats a good stout diff, just go aftermarket on the disc brakes ,& keep a big smile on your face;) crazyL

chrislehr 02-16-2008 04:44 AM

Re: new rear end
 
Quote:

Originally Posted by crazy longhorn (Post 2579989)
8.875 /12 bolt......the gasket is turned 90degrees on the chart....

Hence my confusion.

Thanks.

What gear ratio is stock on those?

crazy longhorn 02-16-2008 05:52 AM

Re: new rear end
 
Quote:

Originally Posted by chrislehr (Post 2580000)
Hence my confusion.

Thanks.

What gear ratio is stock on those?

If its a V8 /auto, figuer 3.07 ratio....6 /stick , 3.73 is most common...

sleepertruck72 02-16-2008 06:15 AM

Re: new rear end
 
Thanks alot this site is really helpful for people like me

chrislehr 02-16-2008 06:22 AM

Re: new rear end
 
Quote:

Originally Posted by crazy longhorn (Post 2580071)
If its a V8 /auto, figuer 3.07 ratio....6 /stick , 3.73 is most common...

Yep, V8 auto... and dont laugh, im a RWD n00b (last project was a 2003 WRX) but people go for a higher ratio for more top end, right?


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