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Old 02-13-2018, 10:45 AM   #1
khess
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1970 C40 Build

Just picked this up this week. Havent really dug into it yet but I know it's a V8 with most of the parts still with it. Trying to figure out what parts cross over from other models since all the parts sites I use go from C30 to C50 and skip this model. Not entirely sure of my plans yet but will update as i go !


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Old 02-13-2018, 11:00 AM   #2
C10 - C90 Bill
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Re: 1970 C40 Build

Most C-50 parts should fit your C-40.

Welcome to the site and keep us posted on it.
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Old 02-13-2018, 11:06 AM   #3
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Re: 1970 C40 Build

Thanks !
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Old 02-13-2018, 11:08 AM   #4
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Re: 1970 C40 Build

Trying to decipher the VIN so I have a better handle on the truck :
CE43DP159114
4x2
V8
??? (4)
Cab and Chassis
1970
Pontiac Plant

Any decoder I've tried to use wont let me since the VIN is too short and most other ones on here are for smaller trucks. If anyone could correct any information that might be wrong that would be great, I've struck out and kind of pieced it together lol
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Old 02-14-2018, 01:02 AM   #5
Robert1970C20rstbukt
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Re: 1970 C40 Build

Cool truck, don't see C40's very often. I've only seen one around here, local junkyard had a '69 C40 several years ago. If I could have saved it I would have, but had no extra money back then.

I think the D in your VIN might be a 0:

C Conventional cab 4x2
E V8 gas engine
4 13,5 to 18,000 GVW
3 Chassis Cab
0 1970
P Pontiac plant
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1984 Chevrolet C30 welding truck 454/SM465
1977 GMC C15 pickup 350/TH350
1970 Chevrolet C20 pickup 307/TH400
1970 Chevrolet K20 Suburban 454/TH350
1969 GMC 8500 fire truck 478M V6/5 spd 1200 gallon pumper

Last edited by Robert1970C20rstbukt; 02-14-2018 at 01:11 AM.
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Old 02-14-2018, 04:25 AM   #6
Bob B.
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Re: 1970 C40 Build

A C/40 is just a light duty C/50. Many had 250 6's or 307 V-8's, and they were regular light duty pickup truck engines. I think only transmission available was a CH-465. Many were sold with a factory installed 9' or 12' stake bed. Low cost truck for farmers, ect..
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Old 02-14-2018, 09:26 AM   #7
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Re: 1970 C40 Build

Thanks for shedding a little more light on the truck. I know it's got a V8 so I'm assuming its the 307 then; Previous owner said it had a 4 speed with a 2 speed rear.

I know the path I want to go with it. It's going to get bags and wheels. Clean it up some. Undecided if I want to toss a modern drive train in it or just keep what's there.

Tossing ideas around for the back half of the truck. Everyone does the stake body, flat bed or something custom. I'll think of something original. I appreciate everyone's comments and help thus far !
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Old 02-14-2018, 11:42 PM   #8
Robert1970C20rstbukt
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Re: 1970 C40 Build

Sounds good! My 1970 service manual also lists the light duty 350 with a 2 barrel carb as an option, best bet is to check the casting numbers.
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1977 GMC C15 pickup 350/TH350
1970 Chevrolet C20 pickup 307/TH400
1970 Chevrolet K20 Suburban 454/TH350
1969 GMC 8500 fire truck 478M V6/5 spd 1200 gallon pumper
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Old 02-15-2018, 08:40 AM   #9
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Re: 1970 C40 Build

It's definitely going to be a learning experience. What I'm gathering is that a lot of the parts from the light duty trucks do transfer over the the c40/c50, If I've read correctly?
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Old 02-15-2018, 10:29 AM   #10
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Re: 1970 C40 Build

Quote:
Originally Posted by khess View Post
It's definitely going to be a learning experience. What I'm gathering is that a lot of the parts from the light duty trucks do transfer over the the c40/c50, If I've read correctly?
Some parts from Pick-ups will fit, most parts from a C-50 will fit, it all depends on the part.

By the way, make sure your doors are from a C-50 or C-60. They look the same, but they are different (unless you want to do some modifying).
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Old 02-15-2018, 10:39 AM   #11
khess
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Re: 1970 C40 Build

The doors are in the barn on the Previous Owners property. Waiting for the weather to clear up a bit so I can bring her to storage, so i'm only going off what I saw when I was there. VIN # doesn't seem completely right so I'm being patient until I get the truck in my hands to see what I've got.
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Old 02-18-2018, 01:04 PM   #12
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Re: 1970 C40 Build

Well Apparently I don't listen very well. The truck does in fact have a 350. The '71 C10 I' might be buying from the same person has the 307. Oops lol
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