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#1 |
Registered User
Join Date: Apr 2014
Location: Burbank, CA
Posts: 2
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64 C30 Questions - Advice desired...
Hello! New to the community...bought a pretty clean 64 C30. Now I need to know what to do with it. (Drive it! I Know!).
A few naive questions... It's a C30 so its more heavy duty, correct? What is different? Is this a towing truck?
Hopefully my pictures work. I can handle the small stuff..but this is my first jump into Chevy territory. Thanks! Clint |
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#2 |
Registered User
Join Date: Apr 2014
Location: Burbank, CA
Posts: 2
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Re: 64 C30 Questions - Advice desired...
Let's try that again...
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#3 |
Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: 64 C30 Questions - Advice desired...
Neat truck. I drive my '65 C-30 as a daily driver. You have pretty short tires on your truck, and may not have 4.10 gears. (4.57 or 5.14 is what they came with new) You very probably have an SM420 Muncie four speed--if it has a very low first gear and you shift 2-3-4 that's what it is. M21 will only make the gears closer together. Disk brakes can be taken from a 71-87 3/4-1 ton, or burb up to '91.
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#4 |
Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: 64 C30 Questions - Advice desired...
The biggest complaint I have with mine as a DD is fuel mileage. I don't go real easy on it and drive with traffic (something like 55-65MPH, normally around 55), and in a big, heavy truck with what a lot would consider deep gears that means I seem to average around 12.75MPG; although driving easier/slower I saw 14.5MPG, so I'd guess an OD trans would help a good bit. The lighter C-10's seem to get a good bit better mileage, although I haven't done an A-B-A comparison to say exactly how much.
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#5 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,475
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Re: 64 C30 Questions - Advice desired...
Nice ride C30's were 1 ton trucks. Some were used for tow trucks, 1 Ton dump trucks etc. Some were dual Rear wheels, I had a 66 C30 single wheel long bed step side. C30 had heavier axles, leaf springs had extra set of helper springs, lower gear ratio. engine tends to howl at 60mph. 283/327 was common, valve cover gaskets should interchange. 350 will also interchange, but won't be any better on the hwy. Swap all the running gear you could use C10 parts disk brakes up thru 1987. then add drop spindles.
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#7 |
Registered User
Join Date: Nov 2013
Location: Blacksburg, VA
Posts: 289
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Re: 64 C30 Questions - Advice desired...
To get the gear ratio to a more highway friendly range you could swap the gears or even swap out the complete rear end. Use something like a 14 bolt 70's rear out of a pickup with 4.11's. Or you could keep the stock rear end and find some of the 19.5 inch rims like the old bread trucks used which would require a taller tire, essentially lowering the rpm's. Those rims can be hard to find, I'm looking around now for a set to use on my '62 dually.
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Tags |
c30, disc brake conversion, drop kit, motor swap, transmission swap |
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