Might be a couple of days before I can get to it. My daughter is coming to stay until Tuesday.
I listed the part numbers Nate.
Probably the two springs shown here, index 8.5720. Looks like people had problems with them back in the 50s. See "Accelerator Control Rod Kit"...
... but, you can gas it up from either side Nate.
I don't have one, but it would be easier to find the right part if you specified make (although it looks like a Chevy, not a GMC) and year.
1939-1954 GMC Master Parts Book page covering master cylinders
Yes, you'll need something with a "start" position (may be marked "sol") on the switch. What year truck?
The switch you pointed to is not a stock switch because it has 5 terminals including one for a starter solenoid which our generation of old trucks...
If you are looking for engine (or ignition) parts, specify the year that the 400 Chevy V8 is from. Distributor parts (points and condenser) for...
A dwell meter will work, no matter what the timing is set to. Engine might (probably won't) run because of the timing, but the dwell can be set....
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