My 1966 C20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rusty66c20 · 06-19-2015, 08:26 AM

First post. First Chevy truck. Have a 1966 C20 that the ppo had started to restore. I have a few questions.

#1 The rear brakes sheen stuck. Drivers side won't roll at all. Passenger side will only roll backwards. How big of a pita will it be to get it freed up?

#2 Not sure what engine I have. 327 or 350? Can I tell by just looking? Also need a radiator.

#3 Does anyone reproduce the C20 fender emblems?

#4 My steering column has a pointer sticking up behind the wheel. Automatic column?
Posted via Mobile Device

corvettejim1968 · 06-19-2015, 08:31 AM

Quote:

Originally Posted by rusty66c20

First post. First Chevy truck. Have a 1966 C20 that the ppo had started to restore. I have a few questions.

#1 The rear brakes sheen stuck. Drivers side won't roll at all. Passenger side will only roll backwards. How big of a pita will it be to get it freed up?

#2 Not sure what engine I have. 327 or 350? Can I tell by just looking? Also need a radiator.

#3 Does anyone reproduce the C20 fender emblems?

#4 My steering column has a pointer sticking up behind the wheel. Automatic column?
Posted via Mobile Device

original engine would be 327
I know they make c10 and maybe c20. brothers trucks,classic parts,LMC are some vendors. So-Cal has radiators

yes auto column

welcome to the forum

1963c-10 · 06-19-2015, 09:21 AM

Easiest thing to do is pull the drums and do a good inspection. Replace what needs replaced.

Only way you'll know what you have for an engine is to run the suffix code.

No one repops any emblems but the light duty trucks (apache 10 or c10 series)

And yep....pointer on top of the column would be an auto column

**DPowers** · 06-19-2015, 09:31 AM

Welcome to the forum. Keep an eye on the parts board for the emblems or swap meet.

OldGMJon · 06-19-2015, 11:11 AM

[QUOTE=rusty66c20;7214684]First post. First Chevy truck. Have a 1966 C20 that the ppo had started to restore. I have a few questions.

The rear brakes sheen stuck. Drivers side won't roll at all.
Passenger side will only roll backwards.
How big of a pita will it be to get it freed up?

Just get under the truck and back off the brake shoes to free up the wheels...

**Captainfab** · 06-20-2015, 01:36 AM

As for the brakes, have you checked to be sure that the e-brake and or cables aren't stuck?

1976gmc20 · 06-20-2015, 11:29 AM

Quote:

Originally Posted by OldGMJon

Just get under the truck and back off the brake shoes to free up the wheels...

That might work. My 1965 would "over-adjust" on one side and then get stuck, and I would have to crawl under and back it off.

I finally just turned the doo-hickeys at the bottom end for end so it became manual adjust only

Also could be the one drum is froze to the shoes

In that case you will have to jack it up, take off the wheel, and heat the outside of the drum with a torch until it pops. I once made a trailer out of an old truck frame and when I got all ready to pull it, one side was froze up like that

rusty66c20 · 06-21-2015, 01:41 PM

Im going to try to post some pictures.

rusty66c20 · 06-28-2015, 02:49 PM

A few more questions. What is the height difference between the low and high transmission hump?

How can I tell what manual transmission is in my truck?

Ditch the split wheels?

**TJ's Chevy** · 06-28-2015, 03:41 PM

Ditch the split rims. She could use some tender love and care fer sure. I'm pretty sure you have the original sm420 tranny.

1976gmc20 · 06-28-2015, 03:57 PM

Heck, at least keep the split rims for spares!

I wish that I still had a set. I can fix flats on those myself at home.

rudyyloverboiii · 06-28-2015, 07:56 PM

If the reverse is all the way to the left n it's a 4 speed I believe it's an sm420. All the way to the right sm456. Muncie 4speeds

jtrichard · 06-28-2015, 07:57 PM

THE high hump is the same height as the hump under the center of the seat, covers all the trans except about inch or 2 of the shift tower

**Captainfab** · 06-28-2015, 11:38 PM

Your truck has the low hump. Trucks that originally came with an auto trans had the low hump.

rusty66c20 · 06-29-2015, 10:37 PM

Quote:

Originally Posted by Captainfab

Your truck has the low hump. Trucks that originally came with an auto trans had the low hump.

That explains the hack job on the transmission hump.

1976gmc20 · 06-30-2015, 12:04 AM

Quote:

Originally Posted by rusty66c20

That explains the hack job on the transmission hump.

Your wheelbase looks too short for a C-20.

I think what you have is a frankentruck

urmyboyblue · 06-30-2015, 07:59 AM

Did C20's have trailing arms or leaf springs? I thought only C10's used trailing arms.

sanford66 · 06-30-2015, 08:44 AM

The engine might be a 350. Newer carb, intake, water pump, clutch fan, etc. You need to look up the casting number to tell for sure, it's on the back of the block behind the driver side cylinder head. Also the frame looks a little short behind the rear wheels, might just be the way the pic was taken though. Joseph

rusty66c20 · 06-30-2015, 10:33 AM

At some point the frame was cut off behind the rear wheels. I can tell...cuts not square.

I also believe the trailing arm cross member on a short bed frame is also under the cab. Also never seen a short bed frame with 8 lug axles.

Lokin4AReason · 06-30-2015, 11:40 AM

boy, if these truck(s) can talk, I bet that they would have some interesting stories to tell ...

06-19-2015, 11:11 AM	#5
OldGMJon Registered User Join Date: Oct 2014 Location: Albion, Ca. Posts: 414	Re: My 1966 C20 [QUOTE=rusty66c20;7214684]First post. First Chevy truck. Have a 1966 C20 that the ppo had started to restore. I have a few questions. The rear brakes sheen stuck. Drivers side won't roll at all. Passenger side will only roll backwards. How big of a pita will it be to get it freed up? Just get under the truck and back off the brake shoes to free up the wheels... __________________ Projects: 65' Chevy C10 swb (rebuilt chassis) 65' Chevy Panel swb 64' Chevy C30 flatbed "above" 80' C30 "beneath") Parts: 66' GMC 2503 & 65' GMC I1500

06-20-2015, 01:36 AM	#6
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: My 1966 C20 As for the brakes, have you checked to be sure that the e-brake and or cables aren't stuck? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

06-21-2015, 01:41 PM	#8
rusty66c20 Registered User Join Date: Jun 2015 Location: Athens GA Posts: 8	Re: My 1966 C20 Im going to try to post some pictures. Attached Images

06-28-2015, 02:49 PM	#9
rusty66c20 Registered User Join Date: Jun 2015 Location: Athens GA Posts: 8	Re: My 1966 C20 A few more questions. What is the height difference between the low and high transmission hump? How can I tell what manual transmission is in my truck? Ditch the split wheels? Attached Images Last edited by rusty66c20; 06-28-2015 at 03:13 PM.

06-28-2015, 03:41 PM	#10
TJ's Chevy Post Whore Join Date: Mar 2013 Location: Southern Oregon Posts: 10,384	Re: My 1966 C20 Ditch the split rims. She could use some tender love and care fer sure. I'm pretty sure you have the original sm420 tranny. __________________ 1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw

06-19-2015, 08:26 AM	#1
rusty66c20 Registered User Join Date: Jun 2015 Location: Athens GA Posts: 8	My 1966 C20 First post. First Chevy truck. Have a 1966 C20 that the ppo had started to restore. I have a few questions. #1 The rear brakes sheen stuck. Drivers side won't roll at all. Passenger side will only roll backwards. How big of a pita will it be to get it freed up? #2 Not sure what engine I have. 327 or 350? Can I tell by just looking? Also need a radiator. #3 Does anyone reproduce the C20 fender emblems? #4 My steering column has a pointer sticking up behind the wheel. Automatic column? Posted via Mobile Device

06-19-2015, 09:21 AM	#3
1963c-10 Registered User Join Date: Nov 2011 Location: fayetteville nc Posts: 10,338	Re: My 1966 C20 Easiest thing to do is pull the drums and do a good inspection. Replace what needs replaced. Only way you'll know what you have for an engine is to run the suffix code. No one repops any emblems but the light duty trucks (apache 10 or c10 series) And yep....pointer on top of the column would be an auto column __________________ 1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual http://67-72chevytrucks.com/vboard/s...d.php?t=519869 1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide http://67-72chevytrucks.com/vboard/s...d.php?t=619024 1964 Short bed trailer

06-19-2015, 09:31 AM	#4
DPowers One foot in front of the other Join Date: Aug 2008 Location: Parrottsville, TN Posts: 5,442	Re: My 1966 C20 Welcome to the forum. Keep an eye on the parts board for the emblems or swap meet. __________________ DP's 66 Build http://67-72chevytrucks.com/vboard/s...d.php?t=361556

06-28-2015, 03:57 PM	#11
1976gmc20 Registered User Join Date: May 2015 Location: Montana Posts: 3,696	Re: My 1966 C20 Heck, at least keep the split rims for spares! I wish that I still had a set. I can fix flats on those myself at home. __________________ Current/past Chevy/GMC trucks: 1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner

06-28-2015, 07:56 PM	#12
rudyyloverboiii Registered User Join Date: Nov 2014 Location: IE California Posts: 225	Re: My 1966 C20 If the reverse is all the way to the left n it's a 4 speed I believe it's an sm420. All the way to the right sm456. Muncie 4speeds

06-28-2015, 07:57 PM	#13
jtrichard Registered User Join Date: Jun 2013 Location: joshua tree ca. Posts: 1,484	Re: My 1966 C20 THE high hump is the same height as the hump under the center of the seat, covers all the trans except about inch or 2 of the shift tower

06-28-2015, 11:38 PM	#14
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: My 1966 C20 Your truck has the low hump. Trucks that originally came with an auto trans had the low hump. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

06-30-2015, 07:59 AM	#17
urmyboyblue Registered User Join Date: Feb 2015 Location: Montevallo, AL Posts: 272	Re: My 1966 C20 Did C20's have trailing arms or leaf springs? I thought only C10's used trailing arms.

06-30-2015, 08:44 AM	#18
sanford66 Registered User Join Date: Jun 2007 Location: Everest Ks Posts: 749	Re: My 1966 C20 The engine might be a 350. Newer carb, intake, water pump, clutch fan, etc. You need to look up the casting number to tell for sure, it's on the back of the block behind the driver side cylinder head. Also the frame looks a little short behind the rear wheels, might just be the way the pic was taken though. Joseph __________________ 1970 Chevelle Nomad station wagon 1966 C-10 lwb,250-six,granny 4speed 1966 C-10 lwb,factory A/C,Custom Cab 1954 Delray 2-door sedan [rat rod project]

06-30-2015, 10:33 AM	#19
rusty66c20 Registered User Join Date: Jun 2015 Location: Athens GA Posts: 8	Re: My 1966 C20 At some point the frame was cut off behind the rear wheels. I can tell...cuts not square. I also believe the trailing arm cross member on a short bed frame is also under the cab. Also never seen a short bed frame with 8 lug axles.



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06-30-2015, 11:40 AM	#20
Lokin4AReason Registered User Join Date: Oct 2014 Location: a beer can .. Posts: 932	Re: My 1966 C20 boy, if these truck(s) can talk, I bet that they would have some interesting stories to tell ... __________________ dont want to hear excuses, i want to hear solution(s)

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