1970 C-20 options list and general questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70LongbedC20 · 03-14-2008, 04:50 PM

Hello,

I own a 1970 C-20 with a 350/350, 8 lug wheels and leaf springs. I searched the site but was unable to find an options list for the 1970 model year. If anyone has an options list that they can post I would appreciate it.

I am somewhat confused about suspension and drivetrain options for the C-20. As I understand, coil springs rears were standard and leaf springs were an option. But from different posts, I've found that there are many people are interested in changing from leafs to coils. Why is that? I can understand that the coil spring rears are easier to lower and ride better, but can the leaf spring equipt trucks carry a heavier load?

Also, my truck has 8 lug hubs. I have no problem with this but I know it reduces the possibility for many aftermarket wheels. Were the C-20's offered with different lug options? If so, is there a load capacity difference between an 8-bolt hub, leaf spring truck and a 6 lug hub, coil spring truck?

I've come to understand that there aren't many differences between C-10 and C-20 frames, but I can't really understand the general differences that distinguish the two models then. Were the main differences in the trim packages or type of springs installed?

Why are some people attempting to change a C-20 to a C-10?

Sorry for all the questions, but I appreciate any answers.

Cheers,

**special-K** · 03-14-2008, 05:46 PM

Swaps from leaf to coils is for lowering reasons.I guess a more car-like ride,also.Nothing wrong with leaf springs.That`s what`s been used since`73 (and before 1960).
All C/20s had 8-lugs and bigger wheels/brakes/bearings/rear axle.Those are the only differences between C/10 and C/20.Trim options didn`t vary.Except,because of the bigger wheels,no full wheelcovers were availble on C/20s.
I don`t know why guys want to change C/20s to C/10s.I guess they can`t find the more common C/10s and don`t appreciate a C/20.Personally,I like a longbed C/20 or a shortbed C/10 and just buy them for what they are.

70LongbedC20 · 03-14-2008, 06:08 PM

Thank you for the information. Do you know where I could find a concise option list for the 70 model year?

**special-K** · 03-14-2008, 07:13 PM

The absolute best source would be the dealer`s book that they ordered from.I have a`71 book and know the differences between the years.If I could copy that I would,but I don`t have a way right now.Maybe someone else knows a link or...

03-14-2008, 04:50 PM	#1
70LongbedC20 Registered User Join Date: Feb 2007 Location: France Posts: 53	1970 C-20 options list and general questions Hello, I own a 1970 C-20 with a 350/350, 8 lug wheels and leaf springs. I searched the site but was unable to find an options list for the 1970 model year. If anyone has an options list that they can post I would appreciate it. I am somewhat confused about suspension and drivetrain options for the C-20. As I understand, coil springs rears were standard and leaf springs were an option. But from different posts, I've found that there are many people are interested in changing from leafs to coils. Why is that? I can understand that the coil spring rears are easier to lower and ride better, but can the leaf spring equipt trucks carry a heavier load? Also, my truck has 8 lug hubs. I have no problem with this but I know it reduces the possibility for many aftermarket wheels. Were the C-20's offered with different lug options? If so, is there a load capacity difference between an 8-bolt hub, leaf spring truck and a 6 lug hub, coil spring truck? I've come to understand that there aren't many differences between C-10 and C-20 frames, but I can't really understand the general differences that distinguish the two models then. Were the main differences in the trim packages or type of springs installed? Why are some people attempting to change a C-20 to a C-10? Sorry for all the questions, but I appreciate any answers. Cheers, Last edited by 70LongbedC20; 03-14-2008 at 04:50 PM.

03-14-2008, 05:46 PM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: 1970 C-20 options list and general questions Swaps from leaf to coils is for lowering reasons.I guess a more car-like ride,also.Nothing wrong with leaf springs.That`s what`s been used since`73 (and before 1960). All C/20s had 8-lugs and bigger wheels/brakes/bearings/rear axle.Those are the only differences between C/10 and C/20.Trim options didn`t vary.Except,because of the bigger wheels,no full wheelcovers were availble on C/20s. I don`t know why guys want to change C/20s to C/10s.I guess they can`t find the more common C/10s and don`t appreciate a C/20.Personally,I like a longbed C/20 or a shortbed C/10 and just buy them for what they are. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

03-14-2008, 06:08 PM	#3
70LongbedC20 Registered User Join Date: Feb 2007 Location: France Posts: 53	Re: 1970 C-20 options list and general questions Thank you for the information. Do you know where I could find a concise option list for the 70 model year?

03-14-2008, 07:13 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: 1970 C-20 options list and general questions The absolute best source would be the dealer`s book that they ordered from.I have a`71 book and know the differences between the years.If I could copy that I would,but I don`t have a way right now.Maybe someone else knows a link or... __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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