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08-04-2024, 05:29 PM | #1 |
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What spark plugs for 1963 230 engine
Hi folks, I am gathering parts so I can clean up the engine, carburetor, distributor and coil, etc. and then I would like to see if this engine will run. The truck has been sitting in a yard since the early 90's and the spark plugs were removed. I haven't done anything serious yet except some external cleaning of mud dobber nests and cobwebs. One spark plug I found was laying in the engine compartment, it is an AC R44LTS6 and I don't know if it came out of this engine. How do I figure out what spark plugs to get? The hole where the spark plug goes has a narrow opening that would accommodate a spark plug with 5/8" hex nut, but I see some listings on O'Reilly Auto Parts and Amazon where the "confirmed fits 1963 C10" show the larger spark plug, I assume that is 13/16 nut. I cleaned the threads on the old unknown spark plug with a wire brush and put some oil on the threads of the engine and installed the spark plug into each of the holes in turn to clean up the threads on the engine.
Last edited by dmjlambert; 08-04-2024 at 05:46 PM. |
08-04-2024, 10:03 PM | #2 |
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Re: What spark plugs for 1963 230 engine
That is the correct type of plug for that engine but I don't believe its the correct number. The parts store should have a listing on it.
Have you tried turning the engine over to see if it is not stuck. Setting that long & with the plugs out it is liable to be frozen. George |
08-05-2024, 05:33 PM | #3 |
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Re: What spark plugs for 1963 230 engine
wrong plug should be ac r44xls
https://www.carparts.com/details/Che...B&gclsrc=aw.ds
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Old dogs and children and watermelon wine Last edited by dmb; 08-05-2024 at 05:38 PM. |
08-05-2024, 05:44 PM | #4 |
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Re: What spark plugs for 1963 230 engine
you can go up to a 46 for a hotter plug, I think they came with a r46n but that is an old number
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Old dogs and children and watermelon wine |
08-05-2024, 10:28 PM | #5 |
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Re: What spark plugs for 1963 230 engine
Thanks. Can you help me figure out what engine I have? Is it a 1966 230?
The numbers are difficult to read, but here is what I think they say Numbers from head 12 GM 6 B26 3872708 Numbers from block CON2 636 3877178 |
08-05-2024, 10:29 PM | #6 |
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Re: What spark plugs for 1963 230 engine
Serial number F0204CD
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Yesterday, 04:19 PM | #7 |
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Re: What spark plugs for 1963 230 engine
it is a 1966 year model 66 was the first year a 250 was available in a c10
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Old dogs and children and watermelon wine |
Yesterday, 11:25 PM | #8 |
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Re: What spark plugs for 1963 230 engine
My old Fix Your Chevrolet book from 63 shows the 230 taking an AC 46N with a .035 gap. Should be a flat seat plug with a washer. I think taper seat plugs started with HEI.
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Today, 11:08 AM | #9 |
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Re: What spark plugs for 1963 230 engine
Easiest way to tell if 230 or 250 is to remove fuel pump and turn engine. If you see 2 counterweights come past one on each side of the pump slot it is a 250. The 250 crank has more counterweights .
Adriaan. |
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