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#1467356 Tue Sep 20 2022 01:52 AM
Joined: Jan 2014
Posts: 2,342
J
JW51 Offline OP
'Bolter
Starting to think about a swap. The 55-62 HO30/ 55T in my 51 3100 is at least half worn worn out. I’d like to keep my stock 16 inch 6 lug wheels.

Parts to rebuild this particular rear are expensive and the expertise to do so is probably scarce, although I think I’ve found the right guy that could do it.

Actually the old timer that could do this work was the one who recommended looking for a more modern rear.

* I’ve seen the early Chevy Colorado rear recommended.

* Somewhere I’ve seen Coilover recommend a Ford Explorer rear and use steel adapter to get back to 6 lug.

* I’ve heard of of Camaro/firebird rears being about the right width, but then again you’re looking at adapters

What else should be be looking out for?

Last edited by JW51; Tue Sep 20 2022 03:44 AM.
JW51 #1467363 Tue Sep 20 2022 02:20 AM
Joined: Mar 2010
Posts: 10,289
5
'Bolter
What transmission are you running?

JW51 #1467369 Tue Sep 20 2022 02:40 AM
Joined: Jan 2014
Posts: 2,342
J
JW51 Offline OP
'Bolter
SM420 open driveshaft. But have a t5 waiting in the wings.

JW51 #1467502 Wed Sep 21 2022 12:23 AM
Joined: Mar 2010
Posts: 10,289
5
'Bolter
I would make the decision on which transmission you plan on ending up with before i would select a rear end with emphasis on the gear ratio.
A SM420 will need highway gears in the rear end. A T-5 will benefit greatly from a rearend ratio between 3.73 and 4.64, depending on the the overdrive ratio that comes in the T-5.
If the 5th gear ratio .86, a 3.73 rearend would likely be optimal.
It the 5th gear ratio .73, a ratio as high as 4.64 would be recommendable.
Keep in mind that you can dial in the setup by selecting a specific tire diameter.
I have a T-5 with a 2001 Nissan Xterra six lug (Chevy pattern) limited slip axle with a ratio of 4.64. I tweaked it into perfection by changing to 30.5" diameter tires.
With this set up, I can pull a tree stump, and drag it down the road at 80 MPH.

JW51 #1467513 Wed Sep 21 2022 01:06 AM
Joined: Jan 2014
Posts: 2,342
J
JW51 Offline OP
'Bolter
My tires are 215/85r16. Need to go look up the OD ratio on the t5. I had it at one time and forgot.

52Carl #1467517 Wed Sep 21 2022 01:23 AM
Joined: Jan 2014
Posts: 2,342
J
JW51 Offline OP
'Bolter
Originally Posted by 52Carl
I would make the decision on which transmission you plan on ending up with before i would select a rear end with emphasis on the gear ratio.
A SM420 will need highway gears in the rear end. A T-5 will benefit greatly from a rearend ratio between 3.73 and 4.64, depending on the the overdrive ratio that comes in the T-5.
If the 5th gear ratio .86, a 3.73 rearend would likely be optimal.
It the 5th gear ratio .73, a ratio as high as 4.64 would be recommendable.
Keep in mind that you can dial in the setup by selecting a specific tire diameter.
I have a T-5 with a 2001 Nissan Xterra six lug (Chevy pattern) limited slip axle with a ratio of 4.64. I tweaked it into perfection by changing to 30.5" diameter tires.
With this set up, I can pull a tree stump, and drag it down the road at 80 MPH.

Did you have to have the Nissan hubs drilled for different studs? That’s an interesting option. Never knew they were 6 lug.

JW51 #1467546 Wed Sep 21 2022 01:04 PM
Joined: Jun 2011
Posts: 4,650
E
'Bolter
I think they came that way, Toyota LC, etc., also.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
JW51 #1467559 Wed Sep 21 2022 03:02 PM
Joined: Jan 2014
Posts: 2,342
J
JW51 Offline OP
'Bolter
The Xterra/Frontier rear seems like a really good option from a width and lug pattern standpoint. I think they’d be easy to find as well.

Curious how folks have done the wheel stud conversion (or not).

JW51 #1467562 Wed Sep 21 2022 03:53 PM
Joined: Apr 2005
Posts: 3,090
C
'Bolter
The Toyota 2wd are 5 lug. A plastic wheel lug pattern gauge and a tape measure plus a visit to a junkyard are an option. The Explorer solid axle rears are getting a bit harder to find but not scarce yet. Most in yards now have the swing axle rear. Used a Trailblazer rear in a recent swap and would NOT recommend it.


Evan
coilover #1467568 Wed Sep 21 2022 04:18 PM
Joined: Mar 2007
Posts: 1,909
Crusty Old Sarge
Originally Posted by coilover
The Toyota 2wd are 5 lug. A plastic wheel lug pattern gauge and a tape measure plus a visit to a junkyard are an option. The Explorer solid axle rears are getting a bit harder to find but not scarce yet. Most in yards now have the swing axle rear. Used a Trailblazer rear in a recent swap and would NOT recommend it.

Evan, just curious as to why you would not recommend the Trailblazer set up.


Craig

Come, Bleed or Blister something has got to give!!!
'59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)
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