What have you done to your square lately??

410 John said:

I looked up my engine block 3 letter code. Turns out my 83 C10 has a 1975 350 rated at 165HP. It’s now power house. It’s definitely been rebuilt. I wonder if it has the original cam.

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Truck82 said:

Found out my ‘82 c20 has a 1970 350. I love surprises!

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grummy said:

I'll take this challenge, But It's a list of what I did since the middle of August. I dragged home an '83 GMC that had been in a shed perhaps since around 1988. Wisconsin Truck, so there are a few little holes but nothing major. 71,000 miles on the clock. I'm 65, retired just a few months earlier and this was a lot of work for one old guy ! While there is more to do, I love driving it. Wherever I go, someone comments or asks if it is for sale. Can't sell it... I'm over budget ! Image below is how she looks currently.

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First 28 Days:

Rough Cleanout, Remove Driveshaft, Exhaust and Transmission, Remove Rear Bumper, Remove Truck Bed / Fuel Fillers, Remove Fuel Tanks, New Brake Lines Front/Rear, New Hard and Soft Fuel Lines to Valve for Dual Tanks, Complete Frame Cleanup/Paint, Bed Underside Cleanup/Paint, New Fuel Tanks Installed, 700r4 Replaced, Bed Reinstalled, Fuel Filler Tubes and Hoses Painted and Reinstalled, New Exhaust, Front/ Rear Brakes Rebuilt, Steel Wheels Painted, Hub Caps Polished, Cooling System Flushed, Radiator Repaired, Vacuum Lines Replaced, Dash Lights Replaced, Gutted Interior for Cleanup, Complete Cleaning, Heater Ducts Cleaned, Seat Shampooed, Interior Replaced, New Brake Pedal Pad, Register Truck, Drill/Tap Broken Seat Belt Bolts, Re-glued Rear View Mirror bracket, Fix High Beam Light Connections, Replaced all Bad Markers/ Tail/ Stop/ Interior Bulbs, Paint/Reinstall Rear Bumper, New Front/Rear Shocks, New Parking Brake Cables, Replace 700r4 Tailshaft Bushing and Seal, Oil Filter/Change, ATF/Filter Change, Front Inner Fenders Replaced, Make Cab Corner 6x9 Speaker Panels, Install Fosi Stereo in Dash Pocket, Install New Heater Hoses, Relocate Seat Slider Brackets (1.5” more Rear Travel), Cut /Remove 1.5” Foam - (Contour Seat Backrest), Purchase/Polish OE Bullet Aluminum Wheels, Mount new Tires, Replace Door Strikes, Knockdown/Touchup Exterior Body Rust, A First Pass on Body Polish/Cleanup.

The following work completed since:

Clean/Paint Driveshaft, Test a different 700r4, Replace TC Seal on First 700r4, Replace first 700r4, Fixed Windshield Washer, Replace Valve Cover Gaskets, EGR Path Cleaned/ Gasket, Paint/Reinstall Bed Rear Deflectors/Bed Fuel Filler Pans, Complete Fluid Film Soak, New Vent Window Hardware, Tailgate lower Pinch cleaned, prepped and Oiled, Ceramic Wax Job, New Spark Plugs, Minor Drivers Rust Cleaned/Prepped/Evaporust/Painted, Carb Cleaned/Adjusted, Install New Tonneau Cover, Clean Fuel Tank Switch Contacts, Install Courtesy Light in Box, L/R Frt/Rr Speakers Installed, Power Feed into Box for Cooler, Fixed Glove Box Latch, Rear Axle Drained/Inspected, New Gasket (2.73:1), Fuel Tank Plastic Covers Reinstalled, Spare Tire Bracket Reinstalled, Build Toolbox Shelf Under hood, Noted Sloppy Pitman Arm Bearing (not leaking though), Install Tachometer, Finalize TC Lockup switching, Swap better gear in for Speedo Accuracy, Install New upper and lower control arms/bushings/joints, Shimmed Bent rear axle flange until I can replace, Painted Front Grille/Headlamp Doors, Make Domed GMC Wheel Center Decals, Make a TS Stalk Button for Wiper Single Wipe, Install Bolt on Receiver Hitch to Step bumper, Install Used Front Sway bar, Remove both doors, install door wiring boots, Install Remote Entry Power Door Lock Kit.

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Truck82 said:

It’s new valve cover day for me

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Travlr said:

Oh maaaaan... I like the ones with the patina.

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justhorns said:

I have a visitor in for service! 350 with a quadrabog runs like **** over 8000 feet of altitude. Cannot pull the hills. (it doesn't fit in the shop)

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JamesSam said:

Recently I depressed the parking brake and the parking break light has stayed on on the dash. This is why I have avoided using the parking brake. In the past I have managed to get the light to finally go off but I cannot remember what I did. It seems like it is directly related to the parking brake pedal being so loose it pulls up just enough to make the ball sensor on the end of the line rest on the metal and send the light to the dash. I have looked in to a few things that may lead to this indicator staying on. The truck drives fine and brakes with no issues. To me it seems to brake with all four. I read about how the proportioning valve works but this doesn't seem to be what is sending the light on. Maybe someone with more insight on this could educate me as to how it actually could be within the proportioning valve. Again, the light on the dash only stays on after the parking break has been used and when released it seems to release all the way but the pedal drops back down just enough to set the light. I also have seen videos of people demonstrating going back and forth from auxiliary to on on the ignition column can clear it but on my 87 truck there is no auxiliary to turn the key backwards in to. Do I have a not original to the truck steering column possibly? Any insight would be greatly appreciated.

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mtbadbob said:

Try rebuilding or adjusting it properly. No one has EVER made a carb better when it's tuned properly.

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carfanatic63 said:

Finished installing fender badges and dash badge. Officially showing GMC rep now!

Also bonus pic of engine. Still struggling with AC freon not flowing through orifice tube properly and freezing up. May just give up and take it to a shop at some point. Will be the first time this truck sees a shop outside an alignment in over a decade.

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