1111024 distributor to 1111062

[Paul A.]

I am restoring a 64 corvette 327-365 hp, the distributor I have is an 1111024, what are the major differences between an 1111024 and a 1111062. I want to rebuild the 1111024 to put in the higher hp engine. Any help would be appreciated.

[Duke W.]

Re: 1111024 distributor to 1111062

I converted the ...024 in my '63 340 HP to ...062 circa 1965. The required parts were new centrifugal weights and springs and a "236 16" VAC. The weights and springs are long gone from GMPD, but just buy a Mr. Gasket 928G spring kit and install the lightest spring, which I think are silver.

The current replacement for the 236 16 VAC is stamped B28 and manufactured by Standard Motor Products. I believe is out of production, but you may be able to find one under the Airtex 4V1053 part number.

You should also use the high breaker arm tension points. Although they were not standard on either distributor, but are necessary in most cases to get the engine to rev cleanly to the 6500 RPM redline.

See the attached pdf.

Also search for a thread stated by me in Dec. 2012 that discusses, in detail, the "blueprint overhaul" of a L-79 distributor. The basics apply to any and all Delco single point distributors.

Duke

[Dan B.]

Re: 1111024 distributor to 1111062

According to the 64 applications the 024 distributor you have fits ALL except FI. If you want to change the springs per Dukes message GOLD is lightest of the springs in the kit and will get you all in at 2500 RPM. They can all be altered to whatever specs you want with the proper weights and springs. That being said, I don't know the cam number for the 062 distributor, but I can tell you the one you have is a great platform and can work in many configurations. Good luck. Dan

[Joe L.]

Re: 1111024 distributor to 1111062

I am restoring a 64 corvette 327-365 hp, the distributor I have is an 1111024, what are the major differences between an 1111024 and a 1111062. I want to rebuild the 1111024 to put in the higher hp engine. Any help would be appreciated.

Paul------


Someone with a distributor machine can configure the distributor to any specs you want, including the 1111062.

[Paul A.]

Re: 1111024 distributor to 1111062

Thanks for the info, my reason for asking is that Corvette Central shows different dist. shafts for shp and low hp.

[Joe L.]

Re: 1111024 distributor to 1111062

Thanks for the info, my reason for asking is that Corvette Central shows different dist. shafts for shp and low hp.

Paul-------

Both the GM #1111024 and GM #1111062 originally used the same main shaft with auto cam. It was GM #1961402. Of course, it's long-ago discontinued.

[Duke W.]

Re: 1111024 distributor to 1111062

Thanks for the info, my reason for asking is that Corvette Central shows different dist. shafts for shp and low hp.

Those are just generic parts. I'm not sure of the specs, but they are not necessarily ideal for various engine configurations. (Neither are most of the OE setups except the 365/375 HP engines.) But whoever came up with those configurations didn't understand the differences in the ideal spark advance map requirements for base and SHP engines.

If you have not seen my 2012 National Convention presentation, google my name, San Diego and Corvette for the pdf version of the PowerPoint slides. You don't need a distributor machine. Install the lightest springs and recommended VAC and you will be very close to ideal for a 365 HP engine, and the presentation will explain why.

Once the new parts are installed you can easily check the new spark advance map with a dial-back timing light.

And be sure to find the thread I recommended in an earlier post. As long as the distributor is apart, you should check all the clearances and potential problem areas like the ground wire so you don't end up putting it back together with all the slop that was there when it was first assembled by GM.

Duke