OBS frames, all the same?

[5spd Z71]

Im looking to start a project, and need an OBS frame. Before I go hunting for them, are they all the same? From 88-98? Ill be needing a 4x4 frame, and just wanting to comfirm that they are the same, or no minor differences.

Thanks!

 

[19trax95]

I believe that 95 may be different since the 95's are a unique transmission as well. But I think its cross member related. Im not sure if its the frame thats different or not. I do know for a fact that 2wd vs 4wd are different and obviously 1500, 2500, 3500 are different.

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[Darkrider]

I believe that 95 may be different since the 95's are a unique transmission as well. But I think its cross member related. Im not sure if its the frame thats different or not. I do know for a fact that 2wd vs 4wd are different and obviously 1500, 2500, 3500 are different.

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Unless its an F44 "Heavy half" truck...then i believe its the same chassis as a 2500 just with 6 lug drivetrain and mounting points.

 

[5spd Z71]

This is going to be a 1500 project, and im sure theres tons of em around. Ive never seen a 'F44' truck/frame/anything. I would assume that about 99% are just the 'normal' 1500's...

I always thought the differences where cosmetic. Besides the OBD1/OBD2 stuff like motor/trans, but mounting points should be the same?

Thanks guys!

 

[great white]

I'm guessing there are differences between a 2500 and a 1500 front frame section at least.

The 9.5 front diff won't go into a 1500 frame without a set of drop brackets or hacking off a diff mount.

Upper control arm mounting points are also different between 1500 and 2500.

In a nutshell, an "F44" rpo code truck is a half ton frame (9.25 front diff) with heavier bars and heavier rear springs.

 

[benz88]

Also has an HD stamp/Tag on the frame. Atleast mine does.

 

[FastOrange]

All 4x4 1500 frames are the same, regardless of being F44 or not, F44 was just 3/4ton springs and t-bars and 6-lug 14-bolt diff.

2WD's are completely different then 4x4 frame.

 

[FastOrange]

I believe that 95 may be different since the 95's are a unique transmission as well. But I think its cross member related. Im not sure if its the frame thats different or not. I do know for a fact that 2wd vs 4wd are different and obviously 1500, 2500, 3500 are different.

Sent from my SCH-I605 using Tapatalk 4

i dont understand where all this non-sense of 1995 4L60E's being any different then any other ones came from. physically they are all the same, its the wiring that is different thats it, thats all.

i have heard everything from crossmembers being different to the bellhousing pattern being different (which really confuses me cause SBC/BBC have had the same pattern since their birth im sure)

 

[Darkrider]

All 4x4 1500 frames are the same, regardless of being F44 or not, F44 was just 3/4ton springs and t-bars and 6-lug 14-bolt diff.

2WD's are completely different then 4x4 frame.

Ohhh so the F44 just has the springs that a lot of 1500 guys swap in for lift...heh nice...so really 1500 keys in an F44 truck would have the same effect as using the 1500 keys in a 1500 that has had the 3/4 tbar swap done.

 

[96k1500]

And obviously there are the ext cab, reg cab, crew cab, short bed, and long bed differences in the frame as well but any 1500 4x4 frame will interchange