![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Dec 2019
Location: Sacramento, CA
Posts: 99
|
What chassis do I have?
I have a 1965 GMC 3/4 ton truck...that's what the VIN number tells me anyway...
At some point in its lifetime, someone did a 5 lug swap and drivetrain swap; it has leaf-springs in the rear. I believe everything that was swapped was from a 1975 C10 (based on casting numbers and the PO's story). I plan on lowering the rear-end a few inches. I don't want to buy parts and see if they fit only to find out that they are wrong. My question is this; is there a difference between a 1965 chassis and a 1975 chassis...and if so, how can I tell which one mine is?
__________________
-Tim '65 GMC that identifies as a Chevrolet |
![]() |
![]() |
![]() |
#2 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,631
|
Re: What chassis do I have?
Are you asking about the frame?...I would suspect a big difference In the frames..are cab and body mounts stock looking or homemade looking?...is the rear soa or aos?...if aos ,then a simple drop block and ubolts would do it
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
![]() |
![]() |
![]() |
#3 | |
Registered User
Join Date: Dec 2019
Location: Sacramento, CA
Posts: 99
|
Re: What chassis do I have?
Quote:
It is soa, so I can't do blocks and U-bolts. I've been searching for a bit and haven't been able to find any definitive way to tell them apart...I'm hoping someone on here has the answer!
__________________
-Tim '65 GMC that identifies as a Chevrolet |
|
![]() |
![]() |
![]() |
#4 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,631
|
Re: What chassis do I have?
If all the body mounts look stock to the frame, then most likely they did a drivetrain swap...can you get pics of the drivetrain parts and mounts?
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Dec 2019
Location: Sacramento, CA
Posts: 99
|
Re: What chassis do I have?
It looks factory to me for the most part.
More photos: Driver side body mounts: The bracket is riveted and looks stock...but why are there two sets of holes? Leaf-spring mount: Rear-end: Welded-on shock mount:
__________________
-Tim '65 GMC that identifies as a Chevrolet |
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Dec 2019
Location: Sacramento, CA
Posts: 99
|
Re: What chassis do I have?
I had big plans for this truck this year but unfortunately I got laid off about 3 weeks ago. I am going to have to hit the pause button for a while on the "big" stuff.
__________________
-Tim '65 GMC that identifies as a Chevrolet |
![]() |
![]() |
![]() |
#7 |
Senior Member
![]() ![]() ![]() Join Date: Jan 2018
Location: Hickory Flat, GA
Posts: 4,460
|
Re: What chassis do I have?
Most GMCs came with leaf springs in the rear from the factory. Do the front frame horns match the contour of the bumper?
__________________
Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson |
![]() |
![]() |
![]() |
#8 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,631
|
Re: What chassis do I have?
From what I can see it looks like your on a stock frame,,, but the rear axle has been swapped...
For a quick easy/cheap drop in the rear , you could pull a couple of leaves outta the spring pack.. It will affect ride and hauling, but if those are stock 3/4t springs it may not matter much.... Drop springs would be the ideal way to do it though....
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
![]() |
![]() |
![]() |
#9 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
|
Re: What chassis do I have?
That is your original frame with a 12 bolt swap likely from the '75 donor. GMC's came standard with leaf springs.
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
![]() |
![]() |
![]() |
#10 | |||
Registered User
Join Date: Dec 2019
Location: Sacramento, CA
Posts: 99
|
Re: What chassis do I have?
Quote:
Quote:
Quote:
You guys rock! ![]()
__________________
-Tim '65 GMC that identifies as a Chevrolet |
|||
![]() |
![]() |
![]() |
#11 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,631
|
Re: What chassis do I have?
How much clearance do you have between the spring eye and the bed floor? It looks fairly close in your pic..
A drop shackle may also change your pinion angle some...
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
![]() |
![]() |
![]() |
#12 | |
Registered User
Join Date: Dec 2019
Location: Sacramento, CA
Posts: 99
|
Re: What chassis do I have?
Quote:
I will probably just buy the leaf springs either way.
__________________
-Tim '65 GMC that identifies as a Chevrolet |
|
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Jun 2014
Location: westminster sc
Posts: 52
|
Re: What chassis do I have?
Hey I got 65 gmc swb used 76 rear axle used flip kit for 73-87 still using original springs replaced bushings and hangers tried to upload a picture but would not load send me a pm if you want info on bushings and hangers
|
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|