Author Topic: Buying a 1975 C-30 dump truck as a project!?  (Read 5063 times)

Offline shawn75c30

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Buying a 1975 C-30 dump truck as a project!?
« on: March 02, 2007, 03:03:00 am »
My grandfather has a '75 Custom deluxe 30 dump truck, hawaiian blue in color. I used to be really into it as a kid, it's what got me into Chevy's, until a tree fell on it and it was repaired poorly, a quick paintjob, wrong grille and bumper, misfit fenders, etc. Wasn't quite the same after that. Other than that it's original, the interior is still good. Just a basic dump truck, no options, just gauges, doesn't even have a dome light. Has a 350, not sure how much it puts out in '75, manual 3-speed trans.

It hasn't been driven on the road in 20 years, it isn't used for anything now (was used for plowing and with a leaf vacuum)and just sits in the back of his driveway. It's solid from not being driven, with the door bottoms and weatherstripping being the worst of it from sitting outside. I had a '70 El Camino project for a while and I imagine a truck is easier to fix up.

If I bought it, I'd tune it up and go through all the basic stuff to drive it on the road. What do you think of something like this as a project? I'd love opinions on this.

How easy would it be to add options to it? Here is what I've thought of doing as I'd go along:

- Add a radio but keep it looking stock
- Get new grille and front end parts (how are repros?)
- Add a dome light, power windows, maybe upgrade the interior from a fancier truck
- Maybe retrofit A/C
- Could it be converted to a dually with a pickup bed?

I'll post pics when I can.  


Offline Blazin

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Re: Buying a 1975 C-30 dump truck as a project!?
« Reply #1 on: March 02, 2007, 06:12:00 am »
AC firewalls are diferent from non AC fire walls. It can be done but the firewall needs to be cut plus swap all the duct work etc. over.
Some reproduction stuff is better than others.
If you want to convert it to a dually you will need to swap in a dually rear end. You will also need to relocate the rear axle as the cab and chassis wheel base wont line up with a bed wheel arch. The inside of the wheel wells on the bed will hit the inside tire on a cab and chassis. You could also modify the bed floor, slide the wheel wells in board and fill the gap with sheet metal or a strip cut from a second pair of wheel wells.

Edited by: Blazin at: 3/3/07 11:34 am
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline shawn75c30

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Re: Buying a 1975 C-30 dump truck as a project!?
« Reply #2 on: March 09, 2007, 10:39:00 pm »
I didn't think it'd be that easy.  Thanks for the info.


Offline Fast68

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Re: Buying a 1975 C-30 dump truck as a project!?
« Reply #3 on: March 15, 2007, 03:51:00 am »
how doe sit have a 3 speed when its a c30 ?

the c30 always got the 465 trans

you sure its all original ?

good luck


Offline Blazin

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Re: Buying a 1975 C-30 dump truck as a project!?
« Reply #4 on: March 15, 2007, 05:29:00 am »
Allot of people call the standard trans in these trucks three speeds as the first gear in the trans. is called low and the second gear is called first. The C30s also came with TH 350s & TH 400s as well.

Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline SUX2BU99

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Re: Buying a 1975 C-30 dump truck as a project!?
« Reply #5 on: April 02, 2007, 02:40:00 pm »
^ Two teachers at my high school had old 70's C10 beaters with a tranny like that. I call them 'farmer fours'.

85 Chevy Silverado C10 short, wide, yellow, 2wd. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3.40 Gov-lok 12 bolt.

Offline Stewart G Griffin

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Re: Buying a 1975 C-30 dump truck as a project!?
« Reply #6 on: May 28, 2007, 01:15:08 pm »
I have seen commerical trucks converted to duallys (sort of) by using a stock bed--the wheel wells were enlarged but the wheels stayed in the stock locations tucked neatly underneath the fenders.  That way you dont' have to change rears.

I think 1tons are awesome but the gas mileage would probably suck.

I say go for it.