Help with starting 79 k20 400SBC

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kgerrish

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Nov 9, 2024
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Location
North Carolina
First Name
Ken
Truck Year
1985
Truck Model
Chevy K20
Engine Size
350
Maybe just dump a little bit of gas down the carb and eliminate a fuel delivery issue. I just went through this on my NEW TO ME and first ever square body. 1985 K20
 
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Craig Nedrow

NADAR UNDER THE RADAR
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Washington State
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Craig
Truck Year
1973 (have two), 1985
Truck Model
K10, K20, C20
Engine Size
350, 454, 6.2 Detroit
Pull #1 spark plug out, have someone turn the motor with you plugging the spark plug hole with your thump, on the outside, no finger in the hole. when air starts to push past your thumb, you are on the compression stroke, watch your balancer, and stop when you see marks. If it is greasy, clean it up and as stated earlier, mark the balancer between 8-12 degrees BTDC. Pull cap look at rotor, it should be pointing at #1, ground plug on manifold and with ign on, turn dist cw viewed from past where the rotor lines up, then ccw until you see the plug spark. that procedure will confirm the timing is close enough to start.
 

peats

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Pennsylvania
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john
Truck Year
72k5, 81c10 short step, 83k10 short fleet, 03 SSR. 25 chevy doodlebug
Truck Model
k5 c10 k10 SSR doodlebug
Engine Size
406 360 6.2 5.3 171
I agree with Nedrow, the timing is way out cause it spits and sputters when it was flipped 180. That means there is spark and fuel present.
 

Bextreme04

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Oregon
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Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Everybody,quit using brake cleaner,looking for intake leaks and as starting fluid,mounting tires etc. Burning brake cleaner creates phosgene gas. ( oh a little won't hurt anybody) yea,how much will? Why take a chance?
To be more specific, that is only chlorinated brake cleaner. The PERC that is contained in the chlorinated cleaners is a major carcinogenic substance and can indeed turn into phosgene when burned.
 

cduneman

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Nov 21, 2024
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Location
Montana
First Name
Chase
Truck Year
1979
Truck Model
K20
Engine Size
400 SBC
:Caffeine: Curious on status.
I got her going, ended up retorquing about everything under the hood, bought a new distributer and wires and plugs, and all new vaccum lines and one of them got it going, not sure what one though .

It idles and revs amazingly but has very low power, and when driven for more than a few miles the coolant starts to bubble and steam out of the radiator. From what I can tell the engine does not overheat though..... I replaced the thermostat and all the coolant hoses and am honestly stumped. Brand new head gasket and piston rings so that should not be the problem.
 

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