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Old 11-27-2011, 10:38 AM   #1
Dahawk
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78 rearend in 67

Can a 78 rearend fit in a 67? Do I have to alter it to make it fit if i want run 22 in the rear and lay frame
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Old 11-27-2011, 11:12 AM   #2
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Re: 78 rearend in 67

assuming your 67 is a leaf spring truck no. the leafs are wider in 73 up rears, so it wont just bolt right in. why you want the 78 rear? just curious
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Old 12-04-2011, 09:42 PM   #3
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Re: 78 rearend in 67

I wanted to change the bolt pattern from 6 to 5. I got the 78 12 bolt for almost free. I don't have a bed on my truck yet so I'm not sure how big i can go in the rear. I welded in a stepnotch and tacked in PB four link
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Old 12-04-2011, 11:08 PM   #4
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Re: 78 rearend in 67

well if you doing all them mods......sure. the 78 12 bolt will have the same track width as a discs brake conversion. you should be good to go.
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Old 12-07-2011, 01:23 AM   #5
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Re: 78 rearend in 67

You can install the 78 rearend and have no problem with it matching up with the leaf springs but you will have to move the shock mounts. I put a complete 1974 Chevy 1/2 suspension under my 67 gmc. It isn't a hard to do at all, just alot of motivation.
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Old 02-15-2012, 09:54 PM   #6
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Re: 78 rearend in 67

rear end is fitting fine, no clue still on what size tire I can run. 22 is the goal in the rear with 20s up front
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Old 02-16-2012, 01:02 AM   #7
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Re: 78 rearend in 67

Quote:
Originally Posted by Dahawk View Post
rear end is fitting fine, no clue still on what size tire I can run. 22 is the goal in the rear with 20s up front
22x9's w/5.5"bs seems to be the popular 'common' (readily available/not custom built) rear size. The wider 71-87 rear housing makes it more difficult to tuck the rollers when trying to lay frame (it would be easier w/the narrower 67 housing).

Tire size could be 265-40-22 or 285-35-22's on a 9" wheel or about 29.8 - 30.25" tall. A 20x8.5" front, 5.25-5.75" bs & 245-40 or 255-40 would be a good match.
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Old 02-24-2012, 11:56 AM   #8
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Re: 78 rearend in 67

So what size would tuck under mine? My rearend is a 78
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Old 02-26-2012, 12:54 AM   #9
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Re: 78 rearend in 67

I have a 1965 gmc 10 bolt 6 lug that im taking out and got a 77" c10 12 bolt 5 lug rear end
its my first swap , what should I be looking for?? or pay attention to wen im swapping it out, iam I going to have to modifie anything ? Do I use the original leaf springs from the 65" on it or the ones from the 77"???
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Old 02-26-2012, 01:04 AM   #10
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Re: 78 rearend in 67

Whats the best choices I wanna run 15" steelies on my truck 65' gmc long bed step side.. Rim ls and tires I want a mean agressive look on them
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