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Small block plug wiring

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Old Jul 12, 2020 | 06:53 PM
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Default Small block plug wiring

I was wondering if there was any shielding used if the car was a radio delete? Photos? Must have used a different set of plug wires?
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Old Jul 12, 2020 | 08:09 PM
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Radio was never standard it was always a option so you can never delete it. But a non radio car has no shielding, ground straps and capacitors.
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Old Jul 12, 2020 | 08:14 PM
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No radio ordered on my 65 Coupe has no shielding ............
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Old Jul 12, 2020 | 08:42 PM
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No radio shielding on a non-radio car to be sure.

However, ALL cars came with HEAT shielding for the plug wires whether radio equipped or not.
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Old Jul 13, 2020 | 08:52 AM
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I see, so each spark plug had that small umbrella shield. Well the wires still must have used some kind of loom to keep the wires off the manifold?
pictures anybody?.
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Old Jul 13, 2020 | 09:50 AM
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Check the AIM
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Old Jul 13, 2020 | 09:57 AM
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Originally Posted by MYblu69
I see, so each spark plug had that small umbrella shield. Well the wires still must have used some kind of loom to keep the wires off the manifold?
pictures anybody?.
A web search will turn up pictures of the heat shields.
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Old Jul 13, 2020 | 10:00 AM
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This is the shielding that comes on a non radio car

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Old Jul 13, 2020 | 10:47 AM
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No radio cars used all the same plug wire supports as cars with radios, including the rubber coated two wire clips on the block. When installed at the factory, the wires may not all have been the same. The factory used individual wires of varying lengths, from 37" to 53". Each length had it's own part number, and the Assembly Manual indicated which part number was used for each plug. To determine if any or all were the same, you'd have to compare the part numbers from the radio and non radio pages in the AIM.

The early Corvette Parts Books only show a single, universal, cut to length wire for all Corvette small blocks, not complete sets. AC Delco has always sold complete sets for 63-74 small blocks, with no distinction between radio and non radio cars. The Delco set is part number 508N.

Below is the page from the 1965 AIM, showing the plug wire installation on a no radio car.


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Old Jul 13, 2020 | 11:45 AM
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Thanks OP Great information, all!
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Old Jul 13, 2020 | 12:02 PM
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Thanks for the information, they still used a lot of shielding without a radio. Also interesting that at the factory they might have used different length wires in production.
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