I just bought a 1954 GMC 5 window with a 503. It hasn’t run since 2011. We got it running but it’s over heating not sure where the thermostat is? Not many videos on these.
Got here from the rebuild thread on 67-72chevytrucks.com. Sounds great! I'm about to start getting all the parts together to rebuild my 503. Any pointers on where to look?
They use a Chrysler starter??😂
Gas mileage is probably 2mpg...
That loping idle reminds me of an old Pratt & Whitney radial, waking up a little bit grumpy. Sounds great! 🍻
Perfect sound track for a movie where the thing that’s threatening you is coming and that engine is powering your escape vehicle. A real knee knocker.
I just bought a 1954 GMC 5 window with a 503. It hasn’t run since 2011. We got it running but it’s over heating not sure where the thermostat is? Not many videos on these.
why no shots of the engine !!!!! J A
back timing off a few degrees. To advanced. Close points easy
Starter sounds like a 80s dodge starter on a chevy lol. I love the sound would love to see a video with the lights and Q siren
Idle speed: 174
Out of time
inline 6.mack had a 707 inline 6.
Was that a gasoline engine?
inline 6.
Did they drop the oilpan before starting the engine?
Just picked up a 52 with the same engine. What spark plugs does it use?
Got here from the rebuild thread on 67-72chevytrucks.com. Sounds great! I'm about to start getting all the parts together to rebuild my 503. Any pointers on where to look?
Was that made by American Fire Apparatus?
I love your truck. Just fired up my 503 and put the video on UA-cam. Long live the 503!
I just fired up my 503. I put the video on UA-cam. Please check it out!
Nice to hear a running 503. Like the coachwork between cab and rear body. Hope to see more of this in future. Thanks for posting. Go the big 6!
Could you please show some more videos or pictures of this truck. and maybe of the engine it's self