Chevy Truck Frame Dimensions and Specs - Chuck's Chevy Truck Pages.com

Chevy / GMC C/K Frame Dimensions

Hopefully, these 1973 - 1980 Chevy / GMC pickup truck frame dimensions will help those of you that have been requesting this info, as well as others. Frame dimensions are helpful, and a necessity when considering possible custom body swaps. Also handy for dump beds, and tilt noses. The oval shaped holes in the chassis are gauge holes. Pins can be inserted, and then measurements can be taken from these pins to verify that a frame is not bent or twisted.

Updated 4-30-03

Model
CA107
CA109
CA209
CA210
CA310
CA314
KA107
KA109
KA209
CA105
KA105
A
13-3/8
13-3/8
13-3/8
13-3/4
13-3/4
13-3/8
13-3/8
13-3/8
13-3/8
13-3/8
13-3/8

B
15-1/4
15-1/4
15-1/4
15-1/4
15-1/4
14-7/8
15-1/4
15-1/4
15-1/4
15-1/4
15-1/4
C
16
16
17
16
16
16
17
17
17
17
17
D
19-7/8
19-7/8
19-7/8
18-1/2
18-1/2
18-1/2
19-7/8
19-7/8
19-7/8
19-7/8
19-7/8
E
12
12
12
10
10
10
12-1/2
12-1/2
12-1/2
12
12-1/2
F
13
13
13
13
13
13
13
13
13
13
13
G
10
10
10
10
10
10
10
10
10
10
10
H
14-7/8
14-7/8
14-7/8
14-1/4
14-1/4
14-1/4
14-7/8
14-7/8
14-7/8
---
---
I
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
---
---
J
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
14-1/14
14-1/4
K
19-7/8
19-7/8
19-7/8
19-7/8
19-7/8
19-7/8
19-7/8
19-7/8
19-7/8
20
20
L
16-3/4
16-3/4
16-3/4
---
---
---
16-3/4
16-3/4
16-3/4
17-3/4
17-3/4
M
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
15-5/8
N
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
17-3/4
P
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
69-5/8
R
76-1/2
86-1/2
86-1/2
105
105
129
76-1/2
86-1/2
86-1/2
46
46
S
110
120
120
131
131
155-1/2
110
120
120
88
88

 

Model # Name
CA107
CA109
CA209
CA210
CA310
CA314
KA107
KA109
KA209
CA105
KA105
Short Bed C-10
Long Bed C-10
Long Bed C-20
Van - G-20
Van - G-30
Step Van P-30
Short Bed K-10
Long Bed K-10
Long Bed K-20
Blazer - 2wd
Blazer - 4wd


Here's the top view....



Chevrolet used 39,000 PSI Carbon Steel to make all 10, 20, & 30series frames. 

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These diagrams are out of a 1977 GM Service manual, I know it covers 1973 - 1980, and may be the same up to 1987. I do not have ANY OTHER specs for any other years. I get about 50 e mails a year asking for them. Sorry I can't help.

 

Rob is putting a 2wd on a 4wd frame - Here

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