1970 CST K20 4x4 Project - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Nomad74 · 04-01-2011, 09:53 PM

Well, I bought this truck and have been beating my head trying to figure out why I could not get it in timing. Turns out I have a flat spot on the cam. So Next week I will be pulling the cam and replacing it with a Melling MTC-1 Performance Cam. I am alsoreplacing the intake with a Edelbrock performer, carb, headers, and new exhaust. I am taking the Glass packs off, I hate the sound.

Today I replaced the "custom" steering wheel with a NOS wheel and fixed the horn. My plan is to restore the truck to as close as to stock as possible. First I want to get the engine running right so it will be a good tow rig for my boat.

I will post some pics as I go along. The following pics were taken before i changed the carb and steering wheel. Wish me luck

LeftCoast32 · 04-02-2011, 11:10 AM

Very Nice!!

Nomad74 · 04-02-2011, 01:48 PM

Monday the camshaft replacement starts. I can't wait to hear and feel how much better the truck runs with it installed.

Nomad74 · 04-04-2011, 05:00 PM

Started the cam swap, header install, intake and timing chain exchange. Here are some pics with my new Steering wheel vs the other one that was on when I got the truck. also here is a pic of the wheels I will be putting on the truck. I also got a magnetic oil drain plug just in case there are some little flakes floating around. The pics of the engine are of my new Carb installed, but it will be soon be sitting on a new intake manifold.

Nomad74 · 04-04-2011, 05:36 PM

here is a link of a short video of the truck today before the new Cam.

YouTube - 1970 K20 CST before new cam and...

propanemudtruck · 04-05-2011, 04:59 AM

Nice truck!

sandking · 04-05-2011, 04:42 PM

Sounds like a lifter ticking in there as well. Do you have plans to mess with the valve train at all?

Nomad74 · 04-05-2011, 05:34 PM

@sandking

Yes, The lifter that contacted the worn cam lobe was con-caved. It was royally messed up. I replaced all the lifters. I will post a pic of the worn cam and lifter. The engine is almost back together, just fitting the headers, pullys, and little other things back on.

Nomad74 · 04-05-2011, 05:56 PM

Here ya go. The lobe was worn off more than I expected, it is nonexistent. My finger is pointing to where the lobe should be.

Altec · 04-05-2011, 06:34 PM

Thought my stock .390/.410 was lacking lift. Haha!

msgross · 04-05-2011, 08:48 PM

watch out for the glass fuel filter... heard some horror stories about that setup...

nice cheyenne super, is it all original except for the lift?

Nomad74 · 04-05-2011, 09:23 PM

Quote:

Originally Posted by msgross

watch out for the glass fuel filter... heard some horror stories about that setup...

nice cheyenne super, is it all original except for the lift?

Thanks, Yeah, it is pretty much all there. Some mods I am doing to the engine are for more power for towing. The back bumper is a trip. There is an up hitch welded to it that goes through to the frame. The past owner used the truck as a 5th wheel tow rig so did some mods to make that possible. Hopefully tomorrow I will be done with the engine work and can get the new exhaust mounted. I hope I don't get pulled over on the way to the muffler shop for driving with just headers.

What are the stories you heard about the glass fuel filters? Do they break and catch fire?

Altec · 04-05-2011, 09:53 PM

the main issues I know of the filter coming unseated turning it into nothing more then a sight glass. the other thing I've heard is them breaking, causing a fire. Which makes sense considering rubber flexes, metal bends, but glass shatters...

msgross · 04-05-2011, 09:57 PM

glass getting hot, vibrating and breaking... right over your exhaust, not fun then.... some guys even avoid the rubber gas line... I'm going with the braided stainless covering the rubber...

Nomad74 · 04-07-2011, 04:47 PM

Done with the Cam replacement. I ended up also putting on a new water pump. I didn't put a new exhaust system due to lack of funds, but I will get it later. The headers look and work great. The truck is running so much better.

**Dieselwrencher** · 04-07-2011, 05:11 PM

Very nice truck, and nice job on the engine!

Nomad74 · 04-13-2011, 10:45 AM

I ordered a new back window from LMC. The old window would not open and the glass was broken out from one of the sliders. I took my truck to a Auto Glass place and asked them if they would put in the new rear window for me. The guy was all up tight about doing it since the truck was so old. He said that the chrome strip and seal was a ***** to work on and didn't want to risk bending it up. I told him that was the reason I went to him because he is supposed to be a professional. Anyway, I went home and after watching a youtube video, I installed it myself with no damage. It really flusters me when I take an old car to a professional and they are scared to work on them. I would think they would love to work on something that doesn't require a computer or a special set of wrenches.

Below are some before and after pics.

Nomad74 · 04-13-2011, 10:51 AM

Just wanted to post this because someone referred to my truck as a Cheyenne Super. As far as my understanding goes, CST stands for Custom Sport Truck. I don't see any markings that say "Cheyenne Super" on this truck.

N2BOOST · 04-13-2011, 01:58 PM

This is a nice project! I've thought about doing a 70's 4x4 in the future. Keep it up!
Posted via Mobile Device

1985-GMC · 04-13-2011, 10:35 PM

Nice project! Are those the stainless ebay headers? How much room is there between the driver side collector and pto cover on your sm465?

glimmertwin01 · 05-24-2011, 04:27 PM

Jealous of rot free CA Iron!

cheyenne402 · 08-31-2011, 12:43 PM

Are your stock manifolds any good? Might be interested.

C/20Austin · 09-29-2011, 11:07 PM

Nice ! lifted??

Vintage Windmills · 04-22-2012, 08:07 PM

Any updates? Curious how its running and if you've done anything else to it. Also what type of mileage you get with gearvendors and how you like that setup? Whats it like with a manual trans?

Nice truck.

04-01-2011, 09:53 PM	#1
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	1970 CST K20 4x4 Project Well, I bought this truck and have been beating my head trying to figure out why I could not get it in timing. Turns out I have a flat spot on the cam. So Next week I will be pulling the cam and replacing it with a Melling MTC-1 Performance Cam. I am alsoreplacing the intake with a Edelbrock performer, carb, headers, and new exhaust. I am taking the Glass packs off, I hate the sound. Today I replaced the "custom" steering wheel with a NOS wheel and fixed the horn. My plan is to restore the truck to as close as to stock as possible. First I want to get the engine running right so it will be a good tow rig for my boat. I will post some pics as I go along. The following pics were taken before i changed the carb and steering wheel. Wish me luck Attached Images __________________ 1970 CST K20

04-02-2011, 11:10 AM	#2
LeftCoast32 Custom Builder Join Date: Jun 2003 Location: Carlsbad, California Posts: 908	Re: 1970 CST K20 4x4 Project Very Nice!! __________________ 1932 Chevy Roadster Car and Pick-Up - http://67-72chevytrucks.com/vboard/s...d.php?t=465709 1966 K20 Factory 4X4 - http://67-72chevytrucks.com/vboard/s...d.php?t=455484 (Sold) 1972 K5 Blazer (Sold) - http://67-72chevytrucks.com/vboard/s...ad.php?t=87530 2007 TrailBlazer SS - http://67-72chevytrucks.com/vboard/s...34#post4706534

04-02-2011, 01:48 PM	#3
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	Re: 1970 CST K20 4x4 Project Monday the camshaft replacement starts. I can't wait to hear and feel how much better the truck runs with it installed. Attached Images __________________ 1970 CST K20

04-04-2011, 05:00 PM	#4
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	Re: 1970 CST K20 4x4 Project Started the cam swap, header install, intake and timing chain exchange. Here are some pics with my new Steering wheel vs the other one that was on when I got the truck. also here is a pic of the wheels I will be putting on the truck. I also got a magnetic oil drain plug just in case there are some little flakes floating around. The pics of the engine are of my new Carb installed, but it will be soon be sitting on a new intake manifold. Attached Images __________________ 1970 CST K20

04-05-2011, 04:59 AM	#6
propanemudtruck Local Redneck Authority Join Date: Mar 2009 Location: Grand Rapids, MI Posts: 584	Re: 1970 CST K20 4x4 Project Nice truck! __________________ -Kevin four on the floor feel the beat in your soul movin to the rhythym pumpin til ya cant take no more dance if you want to do what you came to you cant ignore the feeling of that four on the floor

04-05-2011, 04:42 PM	#7
sandking .....I am working on it..... Join Date: Jul 2007 Location: Anaheim Hills, Ca Posts: 960	Re: 1970 CST K20 4x4 Project Sounds like a lifter ticking in there as well. Do you have plans to mess with the valve train at all? __________________ . . . . . View my build thread HERE

04-05-2011, 05:34 PM	#8
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	Re: 1970 CST K20 4x4 Project @sandking Yes, The lifter that contacted the worn cam lobe was con-caved. It was royally messed up. I replaced all the lifters. I will post a pic of the worn cam and lifter. The engine is almost back together, just fitting the headers, pullys, and little other things back on. __________________ 1970 CST K20

04-05-2011, 05:56 PM	#9
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	updated pic ofbad cam and lifter Here ya go. The lobe was worn off more than I expected, it is nonexistent. My finger is pointing to where the lobe should be. Attached Images __________________ 1970 CST K20

04-05-2011, 06:34 PM	#10
Altec Getcha Pull Join Date: Nov 2010 Location: MD Posts: 691	Re: 1970 CST K20 4x4 Project Thought my stock .390/.410 was lacking lift. Haha! __________________ '81 K10 454/SM465 '86 S10 Blazer '95 H-D Softail '96 Integra

04-05-2011, 08:48 PM	#11
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: 1970 CST K20 4x4 Project watch out for the glass fuel filter... heard some horror stories about that setup... nice cheyenne super, is it all original except for the lift? __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

04-05-2011, 09:53 PM	#13
Altec Getcha Pull Join Date: Nov 2010 Location: MD Posts: 691	Re: 1970 CST K20 4x4 Project the main issues I know of the filter coming unseated turning it into nothing more then a sight glass. the other thing I've heard is them breaking, causing a fire. Which makes sense considering rubber flexes, metal bends, but glass shatters... __________________ '81 K10 454/SM465 '86 S10 Blazer '95 H-D Softail '96 Integra Last edited by Altec; 04-05-2011 at 09:53 PM.

04-05-2011, 09:57 PM	#14
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: 1970 CST K20 4x4 Project glass getting hot, vibrating and breaking... right over your exhaust, not fun then.... some guys even avoid the rubber gas line... I'm going with the braided stainless covering the rubber... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

04-07-2011, 04:47 PM	#15
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	Re: 1970 CST K20 4x4 Project Done with the Cam replacement. I ended up also putting on a new water pump. I didn't put a new exhaust system due to lack of funds, but I will get it later. The headers look and work great. The truck is running so much better. Attached Images __________________ 1970 CST K20

04-07-2011, 05:11 PM	#16
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,142	Re: 1970 CST K20 4x4 Project Very nice truck, and nice job on the engine! __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

04-13-2011, 10:45 AM	#17
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	install of new back window I ordered a new back window from LMC. The old window would not open and the glass was broken out from one of the sliders. I took my truck to a Auto Glass place and asked them if they would put in the new rear window for me. The guy was all up tight about doing it since the truck was so old. He said that the chrome strip and seal was a ***** to work on and didn't want to risk bending it up. I told him that was the reason I went to him because he is supposed to be a professional. Anyway, I went home and after watching a youtube video, I installed it myself with no damage. It really flusters me when I take an old car to a professional and they are scared to work on them. I would think they would love to work on something that doesn't require a computer or a special set of wrenches. Below are some before and after pics. Attached Images __________________ 1970 CST K20



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04-13-2011, 10:51 AM	#18
Nomad74 Registered User Join Date: Feb 2011 Location: Redding, Ca Posts: 21	Re: 1970 CST K20 4x4 Project Just wanted to post this because someone referred to my truck as a Cheyenne Super. As far as my understanding goes, CST stands for Custom Sport Truck. I don't see any markings that say "Cheyenne Super" on this truck. Attached Images __________________ 1970 CST K20

04-13-2011, 01:58 PM	#19
N2BOOST Registered User Join Date: Jul 2010 Location: Louisburg, KS Posts: 112	Re: 1970 CST K20 4x4 Project This is a nice project! I've thought about doing a 70's 4x4 in the future. Keep it up! Posted via Mobile Device __________________ Jason -1950 Chevy 3/4 4x4, 454... under construction -1992 Plymouth Laser 850hp front wheel drive -1992 Mitsubishi Eclipse AWD, 750hp 9.62@144mph, 3300 lbs on 18" street tires

04-13-2011, 10:35 PM	#20
1985-GMC Chevy Enthusiast Join Date: Jul 2009 Location: Canyon Lake Texas Posts: 2,024	Re: 1970 CST K20 4x4 Project Nice project! Are those the stainless ebay headers? How much room is there between the driver side collector and pto cover on your sm465? __________________ Tony 1985 GMC K2500 restoration Project: Rust, White & Blue 1989 Chevy R3500 CC Cummins & 4X4 swap some day... 1989 Burb (D60, 14BFF, 12V, NV4500, NP205, 37" tires in progress) Last edited by 1985-GMC; 04-13-2011 at 10:40 PM.

05-24-2011, 04:27 PM	#21
glimmertwin01 Registered User Join Date: Mar 2008 Location: Rochester NY Posts: 1,022	Re: 1970 CST K20 4x4 Project Jealous of rot free CA Iron! __________________ 67/68 K/20 "The BEAST" 68 K15 V6 LWB. 73 K20 GMC Burb "The Bomber" 74 K/5 74 K20 Custom Deluxe 86 K10 Shorty 92 K2500 Burb 95 K2500 GMC Life is what you make it Live each day like it was your last Old GM Trucks never go out of style

08-31-2011, 12:43 PM	#22
cheyenne402 Registered User Join Date: Jul 2005 Location: Owosso, Michigan Posts: 783	Re: 1970 CST K20 4x4 Project Are your stock manifolds any good? Might be interested.

09-29-2011, 11:07 PM	#23
C/20Austin Registered User Join Date: Sep 2011 Location: Federal Way WA Posts: 2	Re: 1970 CST K20 4x4 Project Nice ! lifted??

04-22-2012, 08:07 PM	#24
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: 1970 CST K20 4x4 Project Any updates? Curious how its running and if you've done anything else to it. Also what type of mileage you get with gearvendors and how you like that setup? Whats it like with a manual trans? Nice truck. __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

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