Identification VIN C20 or C10? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-08-2018, 12:59 AM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
Identification VIN C20 or C10?

Have a further problem with me Chevy Pickup
Want to order lowering parts - spring coils 3"
But I am not sure what car it is definitly?
I found out this data:
VIN = CCS247Z192763
C = CHEVROLET (DIVISION CODE)
C = Conventional CAB* 106 (2,6924 m) (CAB CHASSIS TYPE)
S = 454 205*/240 4BBL (ENGINE CODE > C.I.D./L - N.H.P. CARB)
2 = TON (SERIES)
4 = CAB & PICK-UP BOX OR VAN WITH HI-CUBE BOX (MEDIUM DUTY BODY TYPE)
7 = LAST DIGIT OF MODEL YEAR
Z = FREMONT CA (PLANT CODE)
192763 = PRODUCTION SEQUENCE NUMBER

Fourth digit 2 means TON (SERIES) -> should be a C20?
But it is a short bed with wheel base 298 cm = 117" -> could not be a C20?

Can anyone help?
Thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-08-2018, 02:01 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 53
Posts: 19,000
Wiki Edits: 0

Thanks: 312
Thanked 3,751 Times in 3,110 Posts
C10 will have 6 bolt wheels. 8.5" ring gear 10-bolt rear axle, rear cover needs to be removed and c-clip pulled from axle shaft end to remove axle. Wheel and brake drum also must be removed to remove the axle shaft.

C20 will have 8-bolt wheels and full floating rear axle where the axle shaft can be unbolted from the center of the hub, slid out, and replaced without even having to remove the rear wheel.

It could be you have a truck that has been rebuilt from several parts trucks, with a cab that originally came from a 3/4 ton but it is now placed on a 1/2 short box chassis. Something like this is rather common here in the United States. My Dad, my Uncle, and one cousin, along with many friends and acquaintances have all done this with Chevy Trucks from the 1970's and 1980's.
Especially common in Rust Belt states to use good rust free parts shipped up from the southern states and out west states to replace rotted out cabs and boxes on northern trucks....almost like a small cottage industry...there are several truck parts houses in the state of Michigan who specialize in having a large selection of rust free southern parts for rebuilding our rotten northern trucks....and there are a few guys out there who build a truck or two in their spare time just to sell and make some side money.
There are even some who do it to make a living, building high lift 4WD trucks to sell.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-08-2018, 02:29 AM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
Thanks ..
My truck has 5-bolt wheel (like C10) and 12 bolt axle/diff
I made new rear breaks and the 2" brakets are fitting
Bolt circle should be 5x4,75" but my measure say round about 4,803" mid bolt to mid bolt
Is my measure is incorrect? Should it be from outside to outside bolt? Then it could be 5x5.0" ??
Mounted aluminium wheels 7x15 have a long hole bore - fitting for different bolt circles????
What kind of shaft drive could this be in my truck?

Nothing of this car seems like stock :-(
Reply With Quote Quick reply to this message
 
  #4 (permalink)  
Old 05-08-2018, 02:42 AM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
Thank for your explanation.
Is there a easy way to find out, if the front suspension is from C10 or C20?
Bolt circle front is equal to rear (4.75" or 5")
Are there differences at the spindles? I think spindle is stock (C10 or C20) with short coils (cutted and heated)
So now I want to replace the coils with 3" lowering coils for C10 (maybe from Western Chassis or Chassis Tech) But I am not sure if they are fitting to my current upper and lower arms
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-08-2018, 03:28 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 53
Posts: 19,000
Wiki Edits: 0

Thanks: 312
Thanked 3,751 Times in 3,110 Posts
I miss-typed in my first response, C10 1/2 ton 2WD is a 5 bolt pattern, 5 on 5.0" bolt circle(^ bolt is 1/2 ton 4WD, K10 designation).
To correctly measure a 5 bolt pattern circle, measure from center of one stud to outside edge of the opposite stud. It won't be to the decimal point exact, but will let you determine which bolt pattern you have. From the dimensions you gave, it's the 5 on 5.0" 1/2 ton pattern.

3/4 ton will have 8 bolt wheels on both front and rear, and either 16" or 16.5" rims.

1/2 ton spindle won't accept 3/4 ton hubs/brake rotors so if it has 5 bolt front wheels it is 1/2 ton.

Sounds like you've got a built up truck, 3/4 ton cab(by VIN designation) on a 1/2 ton chassis/frame.

The pictures you posted in another thread were of the 1/2 ton rear axle housing.
Reply With Quote Quick reply to this message
The Following User Says Thank You to ericnova72 For This Useful Post:
hanson (05-08-2018)
  #6 (permalink)  
Old 05-08-2018, 04:00 AM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
Yes, only the cab is stock.
And the big block has switched to a little 327/307 - worst change :-(((
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-08-2018, 07:30 AM
RWENUTS's Avatar
Registered User
 
Join Date: Nov 2011
Location: Bowser, BC, Canada
Age: 68
Posts: 5,311
Wiki Edits: 0

Thanks: 492
Thanked 771 Times in 695 Posts
Any evidence that the frame has been shortened?

Check here for more info on your truck. Look in the index for decoding info.

Truck Parts & Truck Accessories for Chevy, GMC, Ford & Dodge Trucks
Reply With Quote Quick reply to this message
The Following User Says Thank You to RWENUTS For This Useful Post:
hanson (05-08-2018)
  #8 (permalink)  
Old 05-08-2018, 08:58 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 53
Posts: 19,000
Wiki Edits: 0

Thanks: 312
Thanked 3,751 Times in 3,110 Posts
Quote:
Originally Posted by hanson View Post
Yes, only the cab is stock.
And the big block has switched to a little 327/307 - worst change :-(((
This is just my opinion...but few guys would go to the trouble of turning a big block 3/4 truck into a small block 1/2 ton, just too many things to change.
I suspect your chassis, engine, transmission, rear axle, frame are all 1/2 ton and has always been small block powered....someone just replaced the wrecked or rotted original 1/2 ton cab with one that came off a wrecked 3/4 ton big block truck, and now the VIN on the cab means absolutely nothing as far as identifying what parts are on the chassis.

The 1979 3/4 ton my Dad redid he bought new in 1980, rebuilt the entire body in 1994 using a cab, bed, and front clip from 3 different western states trucks. All the parts were purchased from Dick's Southern Truck Parts in Middlebury, Indiana, right on the Michigan/Indiana state line....cab was blue 1985 and from Texas, box was silver 1983 and from Oklahoma, and front clip was brown 1986 and from Texas also. Cab and Front clip was also the '81-87 style, he wanted the more streamlined look, all we had to do to make that fit was trim the frame horns up front on a slant, to match the '81-87 bumper. It all bolted right onto the stock 1979 frame.

I suspect trying to use your cab VIN to identify and source parts is just going to frustrate you to no end since it doesn't appear to match what the rest of the truck is..
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-28-2018, 05:52 AM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
Is it possible that a stock C20 from 1977 has short bed????
Lable in glove box says wheelbase 117,5"
data of lable is identical with vin plate at driver door

i have so much trouble with german registration because i have a C10
but title and VIN says C20 :-)))
can anybody help?

VIN = CCS247Z192763
C = CHEVROLET (DIVISION CODE)
C = Conventional CAB* 106 (2,6924 m) (CAB CHASSIS TYPE)
S = 454 205*/240 4BBL (ENGINE CODE > C.I.D./L - N.H.P. CARB)
2 = TON (SERIES)
4 = CAB & PICK-UP BOX OR VAN WITH HI-CUBE BOX
(MEDIUM DUTY BODY TYPE)
7 = LAST DIGIT OF MODEL YEAR
Z = FREMONT CA (PLANT CODE)
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 08-28-2018, 07:58 AM
RWENUTS's Avatar
Registered User
 
Join Date: Nov 2011
Location: Bowser, BC, Canada
Age: 68
Posts: 5,311
Wiki Edits: 0

Thanks: 492
Thanked 771 Times in 695 Posts
No c20 short bed!
Of course the glove box label matches the vin plate. It’s supposed too.
As stated before you have a truck with a cab swap.
You should join up over here for more info.
The 1947 - Present Chevrolet & GMC Truck Message Board Network - Powered by 67-72chevytrucks.com

Here’s a post from there about where to find your vin stamped on the frame.
VIN number - cab swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

I’ll bet your frame number doesn’t match your vin.
Reply With Quote Quick reply to this message
The Following User Says Thank You to RWENUTS For This Useful Post:
joe_padavano (08-28-2018)
  #11 (permalink)  
Old 08-28-2018, 09:49 AM
75gmck25's Avatar
Registered User
 

Last journal entry: Engine replacement
Join Date: Aug 2006
Location: Alexandria, VA
Posts: 2,557
Wiki Edits: 0

Thanks: 4
Thanked 238 Times in 216 Posts
It sounds like you have a half ton frame and drivetrain, but they swapped in a 3/4 ton body and kept all the 3/4 vin stickers on the body. Too bad they did not give you all the details.

According to this article, the VIN is also located on the frame, so you might want to see what you find there to determine what 1/2 ton you have. https://www.gmsquarebody.com/threads...ocations.8053/

In the U.S., having a 3/4 ton VIN can be an advantage, since emissions controls came in later for 3/4 ton trucks. For example, my '75 3/4 ton with 8200 GVW rating never had catalytic converters, air pump, EGR, or any other emissions add-ons. It only has a PCV system and a choke stove for the air cleaner intake. This makes it a lot easier to comply if you live in an area that requires visual checks or emissions measurement.

You will also find that having a small block usually means cheaper parts that are easier to find. Having a 454 would not be bad, but you can easily build up an SBC 383 stroker that has much more power than the original 454.

Bruce
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 08-29-2018, 08:12 PM
Registered User
 
Join Date: Dec 2004
Location: ohio
Age: 72
Posts: 1,025
Wiki Edits: 0

Thanks: 0
Thanked 146 Times in 129 Posts
Quote:
Is it possible that a stock C20 from 1977 has short bed????
Yes it is possible. It would have to be special ordered but you could get one. I worked for a company that had several of them at our location, they were used primarily for towing long tool trailers. They had more at other locations, and they may have been COPO trucks.

Also the C10 front crossmember and rear end will bolt to a C20 frame. But in any case you have a C20 with C10 suspension.

Last edited by enjenjo; 08-29-2018 at 08:19 PM.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 08-30-2018, 10:14 AM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
I have been searching for the number of the frame and found this number

466422
T 325 S

can anyone find some news with this information?
or wer can i search for?

thanks
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 08-30-2018, 11:02 AM
RWENUTS's Avatar
Registered User
 
Join Date: Nov 2011
Location: Bowser, BC, Canada
Age: 68
Posts: 5,311
Wiki Edits: 0

Thanks: 492
Thanked 771 Times in 695 Posts
The 466422 should be the last six digits of your vin.
If it’s not then you know you’ve got a switched cab.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 10-22-2018, 12:06 PM
Registered User
 
Join Date: Apr 2018
Posts: 33
Wiki Edits: 0

Thanks: 12
Thanked 0 Times in 0 Posts
Can anyone help with dimensons for my german registrations?
I need for my Chevy C10 1977 fleet side shortbed 117,5 inch
- height
- width
- length
Thanks a lot guys
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
1964 Chevy truck C20 covert to C10 Young978 Suspension - Brakes - Steering 13 11-26-2018 05:42 PM
1963 C10 Disc brake swap from 86 C10 John's63C10 Suspension - Brakes - Steering 4 10-14-2016 11:13 AM
C10 cab vs C20 cab mjgord51 Body - Exterior 5 05-25-2015 06:55 AM
fitting 1972 c10 brakes on a 1963 c10 hman17024 Suspension - Brakes - Steering 3 04-09-2013 08:20 AM
(vin)dash replace,vin plate gone. runndmy General Rodding Tech 7 12-07-2011 04:20 PM


All times are GMT -6. The time now is 01:52 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.