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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: philo_beddoe on November 07, 2015, 08:27:34 pm

Title: C-10 or Bonanza 20?
Post by: philo_beddoe on November 07, 2015, 08:27:34 pm
The emblem on my fender says "Bonanza 20",  but i could swear its a c-10.  So what is it? I already  checked the vin #,  which points to  c-10.  So why does it say 20 at the bonanza fender emblem?  I do have the build sheet and it says heavy duty rear leaf springs. Thats all i know.
Title: Re: C-10 or Bonanza 20?
Post by: Jason S on November 08, 2015, 12:47:14 am
From the photos you've posted, it's a C-10...

Is this on one or both fenders? 

Do you think that the fenders were swapped from a 20-series truck? It's also possible someone just put 'Bonanza 20' emblems on there as they couldn't find the proper fender badge(s).
Title: C-10 or Bonanza 20?
Post by: philo_beddoe on November 08, 2015, 07:22:31 am
That is a slight possibility, but of all the emblems available in all the catalogs and online parts companies, none offer the bonanza emblem, they offer most of the others though. Pretty sure fenders are original. The bonanza emblems are extremely rare, as you dont see very many bonanzas out there, in general.  What does the  "20" indicate??

(http://images.tapatalk-cdn.com/15/11/08/60d888067ab5682008c8c8c5336d3ed1.jpg)(http://images.tapatalk-cdn.com/15/11/08/a54947daae7a671e8c80d0227208b4b7.jpg)
Title: Re: C-10 or Bonanza 20?
Post by: csdineley on November 08, 2015, 08:09:04 am
10 = 1/2 ton
20 = 3/4 ton
30 = 1 ton
Title: Re: C-10 or Bonanza 20?
Post by: Stewart G Griffin on November 08, 2015, 10:15:04 am
If it is a 3/4 ton, then wouldn't the rear axle be full float?
Title: Re: C-10 or Bonanza 20?
Post by: Irish_Alley on November 08, 2015, 11:46:16 am
or you could just count the lug nuts ;)
Title: Re: C-10 or Bonanza 20?
Post by: zieg85 on November 08, 2015, 12:01:37 pm
The only true way is to find the RPO sticker or build sheet.  If the VIN indicated a C10 then the truck has had the fenders/emblems changed at one time or another.  20 series indicates a 3/4 ton thus having 8 lug rims.  The dash pad insert would also have a Bonanza on it.
Title: Re: C-10 or Bonanza 20?
Post by: zieg85 on November 08, 2015, 12:24:00 pm
Prior to the 1980 model year, the Bonanza/Royal Sierra packages were based on the Z62 trim level with the addition of floor carpeting; after that time, the packages offered a choice of Z84 or YE9 interiors.

The above statement was found on http://www.73-87.com/7387info/7387trimlev.htm
Title: Re: C-10 or Bonanza 20?
Post by: philo_beddoe on November 08, 2015, 01:26:39 pm
I have 5 lugs all around.  Here is dash pad emblem. (http://images.tapatalk-cdn.com/15/11/08/6cc8acf37fe8ace1ea23d4ef6ca8713d.jpg)
Title: Re: C-10 or Bonanza 20?
Post by: Irish_Alley on November 08, 2015, 01:34:20 pm
prob what happened was someone was redoing the truck and all they could find was the 20. but ive seen trucks with v10 emblems and only having v8s and this was from the factory.
Title: Re: C-10 or Bonanza 20?
Post by: philo_beddoe on November 08, 2015, 01:39:05 pm
Yeah, its gotta be something like that.  Officially and obviously its a c-10.  I'll visit the previous owner sometime.
Title: Re: C-10 or Bonanza 20?
Post by: philo_beddoe on November 09, 2015, 02:52:11 pm
Still weird though, I bought the truck from an old guy who I think bought it back in 77 and kept it garaged often. Maybe they messed up at the factory..doubt it.  I go visit him and ask some questions.