GMC Colman 370
- Thread starter offroadrolls
- Start date
Help Support Rat Rods Rule:
OK so I leaned over with my phone and snapped a picture in the general direction of the casting number on the rear of the engine and came up with 3999293. Looked it up and it's a 66-84 366 Tall Deck Truck engine.
It has a Rochester 2 barrel with a governor on it. The distributor is the old points type that have the vacuum running to the governor through a spinner valve in the bottom of it. Non of the plumbing is hooked up so the governor is inoperable as it sits. Also note the distributor is installed about 90 degrees off.
Oh and because of the points dizzy we can narrow it down to a 66-74 366.
Yesterday I said the accelerator pump was not working but I guessed wrong as to why. I popped the top off the carb and found the problem pretty quick.
I pulled the plunger rubber off and put it on correctly and put the top back on. Between fixing the choke and now the accelerator pump, this beast starts right up and will rev up nice and smooth when you push on the gas pedal.
So after I get the water pump and some hoses replaced it'll be on to all the hydraulics on the clutch and the brakes.
It has a Rochester 2 barrel with a governor on it. The distributor is the old points type that have the vacuum running to the governor through a spinner valve in the bottom of it. Non of the plumbing is hooked up so the governor is inoperable as it sits. Also note the distributor is installed about 90 degrees off.
Oh and because of the points dizzy we can narrow it down to a 66-74 366.
Yesterday I said the accelerator pump was not working but I guessed wrong as to why. I popped the top off the carb and found the problem pretty quick.
I pulled the plunger rubber off and put it on correctly and put the top back on. Between fixing the choke and now the accelerator pump, this beast starts right up and will rev up nice and smooth when you push on the gas pedal.
So after I get the water pump and some hoses replaced it'll be on to all the hydraulics on the clutch and the brakes.
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Bamamav
Well-known member
Carb top looks clean. I bet whoever was in the carb accidentally took off the acc plunger cup, then put it back on wrong.
soltz
The Rat Captain
Your going to be driving very soon [cl
