What have you done to your square lately??

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

legopnuematic

Licensed Junk Dealer
Supporting Member
Joined
Oct 27, 2016
Posts
3,372
Reaction score
9,731
Location
MO
First Name
Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
@Chris64 you did bypass/eliminate the resistor wire and give the HEI a good solid 12v right?

That’s something that is often overlooked doing an HEI upgrade, they will work being under volted for a while, but issues will arise at some point.
 

1976dully

Junior Member
Joined
Oct 26, 2023
Posts
18
Reaction score
67
Location
Kansas City MO
First Name
Eric
Truck Year
1976
Truck Model
C30
Engine Size
5.3
Got 6 new tires for the '76. Painful, but they'll probably outlast me. Lol
Got the new offering from Cooper. Stronghold AT 10 plies
You must be registered for see images attach
You must be registered for see images attach
You must be registered for see images attach
 

WesN

Full Access Member
Joined
Feb 15, 2018
Posts
221
Reaction score
624
Location
Edmonton Alberta Canada
First Name
Wes
Truck Year
1981
Truck Model
C1500
Engine Size
350
Installed a shifter by using 1” tubing bolted to seat frame so not to put holes in my new carpet. Extra long cable so it goes through firewall. Two bolts and undo cable and it can be removed leaving the cab stock. I race the truck in the NHRA Sportsman class so that is why the shifter, column shift with no safety stops for hitting neutral or reverse was a concern.
You must be registered for see images attach
 

Strick

Full Access Member
Joined
Nov 25, 2020
Posts
1,643
Reaction score
4,288
Location
Dunn, NC
First Name
Harold
Truck Year
1979
Truck Model
C20 Crew
Engine Size
350
Well, it is black now. Didnt come.out as good as I had hoped but better than it was. Hopefully nothing a whole lot more damn sanding can fix
You must be registered for see images attach
I worked on my '87 & it's not perfect but it's good! Considering it was almost 40 years old with mostly original paint, I've given the next owner a much better guide coat than what I started with.
Your ride looks great, put the adornments back on & go ride!

HS
 

brooksman9

Full Access Member
Joined
Sep 26, 2021
Posts
662
Reaction score
1,946
Location
Olive Branch, MS
First Name
Patrick
Truck Year
1986
Truck Model
Silverado & Custom Deluxe
Engine Size
350 & 305
I did do the sanding/wet sanding today. Rubbing compound and polish next. This chit is for a much younger person. Following this guy's plan from the SPI forum (mostly)
 

Blazerlady

Junior Member
Joined
Apr 11, 2025
Posts
15
Reaction score
71
Location
MI
First Name
Andrea
Truck Year
1985
Truck Model
K5 Blazer
Engine Size
5.3 converted
Oil pressure sending unit in my blazer, oil pressure gauge was not reading well. Did oil pressure test which I did have and the sending unit was bad, the 5.3. Did notice an oil leak too coming from it
 

Phillippio

Junior Member
Joined
Feb 22, 2025
Posts
3
Reaction score
42
Location
Tucson
First Name
Greg
Truck Year
1977
Truck Model
C15
Engine Size
350
Nice long weekend to put in a Edelbrock Performer intake and general top half clean up. I also replaced a leaking freeze plug. NOT Fun. Not hard, just very difficult to get to. I have to get the rest done since one failed.
She runs well. Timing set to 10 degrees BTDC. New tach will be here Wednesday to help set the carb.
Next in line is fuel tank replacement. The PO included a new tank and sending unit. It would be nice to know how much gas I have in the tank. I can get rid of the jug I have been carrying around for when I run out.
When warm she only has around 15 psi of oil pressure at idle, jumps to 30 by the time I hit 800 to 1k RPM. Then nudges higher with more RPMs.
 

Attachments

  • 20250418_153702.jpg
    20250418_153702.jpg
    154.5 KB · Views: 8
  • 20250419_073326.jpg
    20250419_073326.jpg
    249 KB · Views: 8
  • 20250420_105716.jpg
    20250420_105716.jpg
    227.6 KB · Views: 7

brooksman9

Full Access Member
Joined
Sep 26, 2021
Posts
662
Reaction score
1,946
Location
Olive Branch, MS
First Name
Patrick
Truck Year
1986
Truck Model
Silverado & Custom Deluxe
Engine Size
350 & 305
Not horrible but I'm not going to win any Good Guys awards either. Kind of resembles the way they came from the factory. Only this front corner is polished so far.
You must be registered for see images attach
8
 
Last edited:

Chris64

Full Access Member
Joined
Sep 16, 2024
Posts
151
Reaction score
227
Location
San Diego
First Name
Chris
Truck Year
1974
Truck Model
K20
Engine Size
350
@Chris64 you did bypass/eliminate the resistor wire and give the HEI a good solid 12v right?

That’s something that is often overlooked doing an HEI upgrade, they will work being under volted for a while, but issues will arise at some point.
:oops: I sure did...err...tonight.

So that line going to the coil isn't 12v? TIL.
 

legopnuematic

Licensed Junk Dealer
Supporting Member
Joined
Oct 27, 2016
Posts
3,372
Reaction score
9,731
Location
MO
First Name
Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
:oops: I sure did...err...tonight.

So that line going to the coil isn't 12v? TIL.
On a 1973-1974 (or 1975 with Electronic ignition delete, so points) they use a resistor wire that with key on drops the voltage to ~7-9 volts to keep the points from burning up. They also use the post on the starter to provide 12V to the coil to bypass the resistor wire when cranking.

Basically serves the same purpose as the ceramic ballast resistors found on Chryslers.

If you search the forum you should find some discussions on removing the resistance wire and feeding the HEI the 12v it wants.
 

Chris64

Full Access Member
Joined
Sep 16, 2024
Posts
151
Reaction score
227
Location
San Diego
First Name
Chris
Truck Year
1974
Truck Model
K20
Engine Size
350
On a 1973-1974 (or 1975 with Electronic ignition delete, so points) they use a resistor wire that with key on drops the voltage to ~7-9 volts to keep the points from burning up. They also use the post on the starter to provide 12V to the coil to bypass the resistor wire when cranking.

Basically serves the same purpose as the ceramic ballast resistors found on Chryslers.

If you search the forum you should find some discussions on removing the resistance wire and feeding the HEI the 12v it wants.
I tried to find a good thread on best practices to remove the resistor wire and replace it in the wire harness etc but I need a tach wire run anyway so I'll just run two new wires (one for Tach) and just cap the resistor wire to off in the wire loom. Thanks for warning me about that.
 

Spider

Junior Member
Joined
Nov 24, 2024
Posts
13
Reaction score
23
Location
Montana
First Name
Craig
Truck Year
1990
Truck Model
gmc v2500 sub
Engine Size
5.7 tbi
Drilled and installed a t stat, Installed a retro sound stereo, one lmc headlight (they made it sound like a set), noticed the entire ac bracket was loose, removed it and the water pump, tapped out a broken bolt in the head, reinstalled said parts and made another list.
 

Edelbrock

Senior Member
Joined
Mar 28, 2025
Posts
138
Reaction score
105
Location
Earth
First Name
Grumba
Truck Year
1977
Truck Model
K5 Blazer
Engine Size
400
There have been 4,668 days since July 11, 2012. That's when this topic started.

So if your kid was born at that time, he/she would be..... 13.

And if you bought a new car at that time, then its overdue for that first oil change.

And if you had purchased a new bottle of Scotch at that time, then its ready to enjoy.

Oh, and if you are reading this, then you should grab a beer and say cheers!
 

Latest posts

Forum statistics

Threads
45,488
Posts
984,441
Members
38,542
Latest member
McLovin21
Top