distributor id #110985

[Nelson Perez]

Can someone out there help me identify my distributor? It has a band id #110985
with a date code 7 H 28. It also has 171 cast upside-down into the body alongside the tach drive. Oh, by the way it has no vacuum advance. Should it have vacuum advance? Does this matter if I plan on converting it to breakerless?

[Jack H.]

Re: distributor id #110985

Do we guess, or are you going to share the target car (year/engine configuration) with us?

[Jack H.]

Re: distributor id #110985

Do we guess, or are you going to share the target car (year/engine configuration) with us?

[Ed Jennings]

Re: distributor id #110985

Vacuum advance may or may not be correct for your car/engine combo. On the other hand, almost all street driven cars will get substantially better fuel economy with vacuum advance, regardless of whether or not you install a breakerless trigger. Like Martha Stewart says, " It's a good thing".

[Ed Jennings]

Re: distributor id #110985

Vacuum advance may or may not be correct for your car/engine combo. On the other hand, almost all street driven cars will get substantially better fuel economy with vacuum advance, regardless of whether or not you install a breakerless trigger. Like Martha Stewart says, " It's a good thing".

[Joe L.]

Re: distributor id #110985

Nelson------

The distribotor number that you provided is one digit short of a complete part number. In this case, I expect that the distributor which you have is a GM #1110985. This distributor was originally used on 1962 Corvettes with 340 hp engine. It is a dual point-type distributor which was not equipped with vacuum advance. Many of these units were sold in SERVICE for folks that wanted to convert their Corvettes (or other Chevrolets) to dual point distributors and, by the date code, it looks like that's where the one you have originated.

Due to the machining configuration of this distributor, it is not feasible to convert it to vacuum advance. However, it can be converted to breakerless, if you wish. Quite frankly, though, since most Corvette distribuor applications used vacuum advance and since vacuum advance is desirable for a street engine, your best bet would be to obtain another distributor core for conversion and rebuilding. Unless, of course, you have a 1962 with 340 hp. In that case, your best bet would be to leave the distributor in its present configuration, rebuild it, and use it.

[Joe L.]

Re: distributor id #110985

Nelson------

The distribotor number that you provided is one digit short of a complete part number. In this case, I expect that the distributor which you have is a GM #1110985. This distributor was originally used on 1962 Corvettes with 340 hp engine. It is a dual point-type distributor which was not equipped with vacuum advance. Many of these units were sold in SERVICE for folks that wanted to convert their Corvettes (or other Chevrolets) to dual point distributors and, by the date code, it looks like that's where the one you have originated.

Due to the machining configuration of this distributor, it is not feasible to convert it to vacuum advance. However, it can be converted to breakerless, if you wish. Quite frankly, though, since most Corvette distribuor applications used vacuum advance and since vacuum advance is desirable for a street engine, your best bet would be to obtain another distributor core for conversion and rebuilding. Unless, of course, you have a 1962 with 340 hp. In that case, your best bet would be to leave the distributor in its present configuration, rebuild it, and use it.