Matt's 1970 C10 Thread
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I posted in the new member forum a few days ago. I figured I better start a thread to document the rebuild of my 1970 C10.
http://www.aprilsawyerphotography.co...JG/i-F8wdD9r/A Here she is in all her glory! This was my first vehicle when I turned 16. It was in great shape when my Dad bought it for me, but I let it deteriorate. I am motivated now to get the truck looking better than it did before. http://www.aprilsawyerphotography.co...JG/i-grJrfrZ/A Here's a picture of the engine. It's a 400 Small Block. I sent the carb off to be rebuilt and plan on throwing it back on later this week to try to start the truck. I checked cranking compression the other day on all cylinders and they were all between 137 to 150 PSI. I think the motor is still sound, but we will see soon. I want to get this truck down to frame and work my way through it slowly. http://www.aprilsawyerphotography.co...JG/i-3KFTJBG/A The interior isn't in too bad of shape. I'm still undecided on if the cab will need to be pulled off, but I will cross that bridge when I get there. This is how I plan on starting my rebuild. You guys let me know if this sounds logical.
I look forward to hearing from you guys and learning more about these beautiful vehicles! http://www.aprilsawyerphotography.co...JG/i-qtfhtbT/A |
Re: Matt's 1970 C10 Thread
"Begin having fun!"
You have the right idea! Good looking truck you got there. Always fun turning a wrench on these old trucks. Welcome to a great site here. |
Re: Matt's 1970 C10 Thread
I would get fresh gas and a new fuel filter on before trying to start it. nothing worse than getting a fresh built carb full of rust and crud. welcome to a very informative and friendly site.... nice looking ride, interesting wheels.
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Nice truck! I really enjoy working on mine I know you will too.
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Hey Matt, awesome truck! I'm in the same boat with my 70 C-10: it was my first truck when I was 16, but has been sitting for some time since. I pulled the plugs and squirted some Marvels Mystery oil into the cylinders, then pulled the valve covers and poured some more over the valvetrain. After some new plugs/wires and a rebuilt carb, she fired right up!
I plan to go a similar route as you: first mechanical (engine, brakes, etc.) then aesthetic (interior, shortbed conversion and paint). Good luck! |
Re: Matt's 1970 C10 Thread
Hey, nice truck there man! Welcome to the site. This place is awesome! I learned so much from all the guys and gals out here when I was getting my '72 C20 back up and running. These trucks are always needing something somewhere, but I love the challenge of getting the job done. Good luck with the project. It'll be a great feeling once you're rolling down the road.
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Nice truck and welcome to the site.
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What kind of thread sealant do y’all use for fuel lines? I’ve read a few boards and the recommendations range from Teflon tape to yellow Teflon tape or pipe dope. Just curious to see what y’all are using.
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Re: Matt's 1970 C10 Thread
'70 is a cool truck.. that's the year I got.
love it. yours in good shape! enjoy the rebuild. Mark |
Fuel Pressure Regulator for Edelbrock Carb
So I picked up my carb from the shop today. It looks nice and shiny! It's an Edelbrock 600CFM. Part number is 1400.
The mechanic made a suggestion that I run a fuel pressure regulator. I though this was odd since I have a mechanical fuel pump, and the pressure shouldn't be too high. He said that these carbs are notorious for running poorly even with a slightly higher pressure than nominal. I took his advice, considering when I move the tank to under the bed I will upgrade to an electric fuel pump and will definitely need the regulator then. I also went ahead and bought a cheap fuel gauge to see what pressure it is running. Hopefully I can get the carb on and tinker some this weekend. Yall have a good day! :chevy: |
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I put a gauge inline. I doubt u need a regular though. See what it's putting out first Posted via Mobile Device |
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And welcome to the board. |
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I don't use any sealer on fuel lines. If it's a flare fitting it sould seal. Where ya having problems.
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So I went ahead and bought a fuel pressure regulator and gauge to check the fuel pressure being supplied to my carb and regulate it if need be. I used 3/8" NPT barb hose fittings on the in and out of the regulator. I used a 3/8" to 1/8" NPT reducer to mount the gauge. I ended up going with Permatex Pipe Sealant on all the hardware. I made sure not to put it on the first couple of threads so as not to get any in the fuel line. https://photos.smugmug.com/photos/i-...-SHSqNxg-L.jpg https://photos.smugmug.com/photos/i-...-n7qmtwS-L.jpg I'll let you guys know if this causes any problems. Here's a picture of the freshly rebuilt carb. https://photos.smugmug.com/photos/i-...-wNmjMvG-L.jpg |
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Carb is on.
https://photos.smugmug.com/photos/i-...-PpbqG2H-M.jpg Ignore the fuel filter and regulator setup as this is just temporary. Hopefully I'll have a chance to change the oil this weekend. I've seen some threads about Marvel Mystery Oil, so I think I'll be putting some of that in with my new oil. Y'all have a great weekend! |
Ignition Coil Test
Past few days have been pretty busy, but I found time to fiddle today. I thought it would be a good idea to check the Ignition Coil to see if it is any good. I pulled it out and put a meter on it and came up with the following values:
1. Primary Resistance = 1.3 Ohms 2. Secondary Resistance = 7.6K Ohms I can't find a part number on the coil, but it seems pretty old. I found specs on-line for similar coil and it states that the acceptable ranges are: 1. Primary = 1.0 - 1.7 2. Secondary = 7.5k - 14k I fall within these ranges but on the lower side. Should I go ahead and get a new Coil? Keep in mind I only want to be able to start the engine to make sure there are no major issues. I plan on pulling the engine and upgrading to HEI in the future. Any suggestions? |
Bought some stuff today
Bought some stuff today.
Also bought this Sears Engine Analyzer: https://photos.smugmug.com/photos/i-...-ttBDV9h-M.jpg My dad had one years ago and I figured I would need something to set the dwell with on my point style distributor.. Found it for $29 on E-bay. We'll see what kind of shape it's in. |
Bad Fuel Pump?
Got a few things accomplished today.
Replaced the point set and set the gap to 0.019". Also replaced the rotor button and the cap. I attempted to test my fuel pressure but ran into a problem. I ran directly from my fuel pump into a 5 gallon gas can. I ran the output line into an empty can. I turned the motor over several times and not a drop of gas came out. Unless I'm missing something, the fuel pump seems to be toast. Did I miss something on testing the fuel pump. Does the gas can have to be fully sealed? I assume not, but I simply put the hose in the can with no cap. Y'all have a good one! |
Re: Matt's 1970 C10 Thread
So I gravity fed the fuel pump and turned the motor over. It built pressure and seemed to function okay.
Before doing this, I installed new spark plugs and changed the oil and oil filter. I attempted to crank the truck but had no success getting it to start. Determined there was no spark at the spark plugs. After a little investigating, I found that there was not a good negative at the coil. I ran a negative wire straight to the battery and connected to the coil negative. I then had a good 12 volts at the coil. Tried again and nothing. Taking the coil wire off of the distributor and grounding it while turning over produced no spark. I think my final conclusion is the coil is bad. When I checked the resistance of the primary and secondary they were both within range but low. I'm going to pick up a cheap coil at Autozone tomorrow and try again. |
Re: Matt's 1970 C10 Thread
I wish I had a picture, but are you sure the condenser wire is not grounded out when you changed out the points?
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It's too dark to get a picture now, but what should the condenser be wired too? If I remember correctly, the condenser and the negative wire from the coil both attached to the backside of the points.
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I know hindsight is 2020, but have you considered an HEI system to swap in? I don't know what your restoration goals are but it might be something to think about at this point.
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