NV WTB - OEM rear sport bumper brackets off a 2WD, SWB with leaf springs

[71CHEVYSHORTBED402]

Originally Posted by Richard

Not oem, but if I recall correctly these are what you need. Bought a set of these quite a few years ago and they were good quality. Matched oem very well. https://www.classicparts.com/1967-72...nfo/65%2D348B/

Rumor is the brackets you posted work for my truck. They don't, but can I ask what you installed them on?


For what it's worth, here's some info. about the parts. Incidentally, my frame is a 5.3/10" bolt pattern. The reason my application is different is a 5" bolt pattern wouldn't clear the shackle bracket. That and it's SWB frame, so the rear hole has to be further back in the frame rail.


I believe all the rest are a 5" bolt pattern. http://www.gmpartswiki.com/getpage?pageid=22606

3885614 - Chrome Rear Bumper Bar. 67-72 C-10-20 (Sub, Fleetside) Blazer

3890391-2 - Inner Brackets. 71-72 Ser. 10-30 (Stepside, Fleetside) and more.
Reads excludes leaf springs. Found an NOS on the Chevy site, it’s the bracket folks call “coil spring” inner brackets. The same part was used for the front bumper on 67-70 "pick-ups" (excludes 4x4)

3952089-90 - Inner Brackets. 69-72 Ser. 10-20 (4WD) (Pick-up)
Reads Rr. Bumper, which is rear bumper. No NOS available for reference. These are likely what folks call “4x4” inner brackets (see Richard's link for reference).

3891985-86 - Inner Brackets. 68-72 SWB 2WD with leaf springs.
No reference found on the web for this bracket. Not surprising. My Chevy is an outcast

3891987-88 - Outer Brackets. 68-72 SWB 2WD with leaf springs.
My outer brackets are an oddity as well........... There are quite a few hits on the web for this outer bracket, reproductions. They're referencing the wrong part number. Been 50 years now, stuff gets lost. The brackets they're selling fit everything but a 71 SWB 2WD with leaf springs, I can't speak for other years.

3892477-78 - Outer Brackets. 71-72 and more. Ser. 10-30 (Conv., 4WD), Blazer (Stepside, Fleetside) and more.
Reads “Aux. leaf springs excluded”. Can’t say what an “Aux.” leaf spring is, but OK.
This is the common outer bracket. Found an NOS on the Chevy site, looks like the typical outer bracket. Other than that nothing found on the web.

[sawman]

Originally Posted by 71CHEVYSHORTBED402

Rumor is the brackets you posted work for my truck. They don't, but can I ask what you installed them on?


For what it's worth, here's some info. about the parts. Incidentally, my frame is a 5.3/10" bolt pattern.
I believe all the rest are a 5" bolt pattern. http://www.gmpartswiki.com/getpage?pageid=22606

3885614 - Chrome Rear Bumper Bar. 67-72 C-10-20 (Sub, Fleetside) Blazer

3890391-2 - Inner Brackets. 71-72 Ser. 10-30 (Stepside, Fleetside) and more.
Reads excludes leaf springs. Found an NOS on the Chevy site, it’s the bracket folks call “coil spring” inner brackets. NOTE: The same part was used for the front bumper on 67-70 "pick-ups" (excludes 4x4)

3952089-90 - Inner Brackets. 69-72 Ser. 10-20 (4WD) (Pick-up)
Reads Rr. Bumper, which is rear bumper. No web reference found. I believe these are what folks call “4x4” inner brackets (What Richard's link shows).

3891985-86 - Inner Brackets. 68-72 SWB 2WD with leaf springs.
No reference found on the web for this bracket. Not surprising. My Chevy is an outcast

3891987-88 - Outer Brackets. 68-72 SWB 2WD with leaf springs.
My outer brackets are an oddity as well. Ironically there are quite a few hits on the web for this outer bracket, reproduction. They're referencing the wrong part number. The brackets they're selling fit everything but a SWB 2WD with leaf springs.

3892477-78 - Outer Brackets. 71-72 and more. Ser. 10-30 (Conv., 4WD), Blazer (Stepside, Fleetside) and more. Reads “Aux. leaf springs excluded”. Can’t say what an “Aux.” leaf spring is, but OK. This is the common outer bracket, works on everything but a SWB 2WD with leaf springs. Found an NOS on the Chevy site, looks like the typical outer bracket. Other than that nothing found on the web.

would these work.

[71CHEVYSHORTBED402]

Originally Posted by sawman

would these work.

If the center of that round hole is 11/16" from the end of the bracket they're the common outer brackets.