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74’ Cheyenne C10/K30

Overview Gallery Discussion
HINZ28 said:
Stock 350 with a q-jet
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I had a cracked rubber line on the frame rail that was just before the pump. It wouldn't leak fuel, but I think it would allow the pump to pull air in.

Just a thought...
 
Justin V said:
I had a cracked rubber line on the frame rail that was just before the pump. It wouldn't leak fuel, but I think it would allow the pump to pull air in.

Just a thought...
Click to expand...

I’ve chased the lines pretty well. Cut out a crushed part on on feed line to carb. Replaced 2 shitty vacuum caps that were rotted. New air filter

The cell pulls from the bottom and has to go up hill a little. I wonders if the pump has a enough power to pull fuel that route? I have a warrantied Holley blue that I may try? Would that be to much pressure?
 
I had my old '68 act similar once. The mechanical pump wouldn't push enough. I had converted the truck to saddle tanks. But I ended up putting a little electric diaphragm pump under the cab feeding the mechanical pump. I wired it ignition hot, but with a switch too. I could reproduce the problem, turn on the pump and make it run. It apparently cured itself later, cuz I turned the switch off the next year, and no problem.
But anyway, I would wonder if the Holley pump is too much, but if your truck has the factory return line, maybe you could get away with it?
 
6872xtc said:
I had my old '68 act similar once. The mechanical pump wouldn't push enough. I had converted the truck to saddle tanks. But I ended up putting a little electric diaphragm pump under the cab feeding the mechanical pump. I wired it ignition hot, but with a switch too. I could reproduce the problem, turn on the pump and make it run. It apparently cured itself later, cuz I turned the switch off the next year, and no problem.
But anyway, I would wonder if the Holley pump is too much, but if your truck has the factory return line, maybe you could get away with it?
Click to expand...

Yes and the they come with there own regulator but I’d assume the mechanical pump should be able to regulate it just fine.
 
Added inline electric pump. Still does same thing....maybe I’m just used to LS power and higher revs :rotfl:
 
Anyone ever had an Sm465 bind up real bad. Gets stuck in neutral. Couldn’t shift into any gear. Had to pull shifter and wiggle things around and re attach shifter
 
HINZ28 said:
Anyone ever had an Sm465 bind up real bad. Gets stuck in neutral. Couldn’t shift into any gear. Had to pull shifter and wiggle things around and re attach shifter
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I have... very frustrating! :haha:Always made it work though. Not like a auto that decides not to shift.
 
HINZ28 said:
No fun your tour stalled on a incline/rock and gotta pull the shifter without rolling off :eek:
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Yeah that would suck bad!

I had it happen once on a set of train tracks.I wasn’t in a bad spot but I did hurry!? Just in case.:thinking::1zhelp:
 
Change of plans this LQ4 is getting resealed and going on this truck. 567BB0A4-1591-47C0-B9A1-1D7FC5CC17BA.jpeg

Back story. I bought a parts truck 2000 K2500 6.0/NV4500 pickup. Nv4500 will be going in my 1972 Cheyenne/20
 
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