Were these distributors only made with an aluminum housing?????? Chevrolet by the #'s says there suppossed to be aluminum and I have seen a few many years ago before restamping and they were aluminum. But lately have seen 1 or 2 that were cast iron, all earlier 65 dates . I just assumed the cast iron ones had a new band stamped. Were these ever made in cast iron. This is the last piece I need for a JUNE dated "EG" block I have. THANX

Were these distributors only made with an aluminum housing?????? Chevrolet by the #'s says there suppossed to be aluminum and I have seen a few many years ago before restamping and they were aluminum. But lately have seen 1 or 2 that were cast iron, all earlier 65 dates . I just assumed the cast iron ones had a new band stamped. Were these ever made in cast iron. This is the last piece I need for a JUNE dated "EG" block I have. THANX

Do not listen to Chevrolet by the numbers on this one. True 65 dated #1111100 distributors are cast iron. They did later on make service dated pieces in aluminum. If memory serves me correct, I have seen 67 and 68 dates of these aluminum ones. But all original 65-66 dates are cast iron. The only aluminum 66 distributors are for small blocks. The aluminum one did not have the blockoff between the two bottom rings for the early type oiling system.
By the way, currently have a 5J dated #100 distributor, so I can back up what I am saying.

Jeff Dotterer
Dated Components
Diamond Restored Judge

I seen one on ebay about 3 months ago it was aluminum and date was June something 69. I thought maybe the 6 was upside down never knew the had service distributors. A friend has one that is aluminum and is dated june of 66. He bought it 12-15 years ago at carlisle for 20 bucks from someones dist pile. I will have to call him to see if it has the notch for the oiling (U would think it would have to), never thought of it. Did they make service dated water pumps I have a #284 dated A 12 9.............THANX

Gm/Delco #1966407 housing.....used on 1111100,1111109,1111138
My 360hp dist.is 1111138....cast iron.

Delco "Service Parts" catalog.

Did they make service dated water pumps I have a #284 dated A 12 9.............THANX

Hi,
Yes, they did make water pumps for service use, since they would use whatever casting was available at the time. It is more likely it came from a Corvette or Pickup truck, both of which still used the short water pump in 1969 even though the other car lines went to long water pumps. The casting number was still the same (#284).

I really doubt the #1111100 in Aluminum factory installed, but theoretically it is possible. I have seen some late 66 cars with the 67 casting number #406 block. These blocks were the later improved oiling system, and would not need the distributor blockoff. It is possible a few distributors were made in aluminum for these engines, since the alum dist did not have the blockoff. I am positive they were made in aluminum as service units, and I have seen them on occasion. And a late 66 date such as you mentioned could have been an early service date. If one would turn up in a late 66 with the #406 block, than the theory would make sense.

Jeff Dotterer
Dated Components
Diamond Restored Judge

Supposedly the last month of 66 production used the #406 casting block. I have a 4bolt #406 with casting date of F-16-6. It was a service block and starter pad is stamped T0705........deck is virgin and is blank. I also seen a late july assembled 66 L78 car original that had a #406 block. THANX AGAIN

Jeff...as it turns out #1966407 is the number this catalog shows as a replacement housing for 1111094(65 396 Chevelle)1111073(65 full size 325hp)1111100(listed as 65 full size w/375hp?!? and 66 chevelle 375)1111109/138(66 325/360hp)1111169/170(1967-8)1111445(68 350hp manual)
1111497-8-9(1969)..information in this section states "revised to Feb.1,1978".
Probably just what the title of catalog says "Service" replacement.:D...and
it would probably be aluminum if its used on all these units.
Could you explain about the "oil block off"?:confused:

Could you explain about the "oil block off"?:confused:

On all early 65 and 66 Big Blocks, a groove is cut in the center of the rear cam journal. This feature was eliminated for the 67 model year. The Distributor also had the bottom two rings ( the part that centered it in the block) joined together for about 1 1/4 inches. Small block cast iron distributors do not have this blockoff, or joined section. This is all part of the early style big block oiling system.

Jeff Dotterer
Dated Components
Diamond Restored Judge