I have a friend that has two old Red Delco ignition coils. One of them is embossed with the number "240 and CD", the other one is embossed "241 and CD". I would believe they came on 67, 68 or 69 Olds or Pontiac with the UHV ignition. The only ones I have seen before had the numbers "248 and CD". Are the coils he has actually assembly line coils and the "248" coils I have seen later over the counter replacements? So, I guess the real question is, what did the 240 and 241 coils come on originally? Any help will be greatly appreciated.
John, Can't help you there, coils were already on the engines when they came over from the engine plant. I'll pursue further through the Olds site. That place is getting nasty....good men have gone in and not come out.......
This was posted last night. Run to Rund Joined: 17 Apr 2006 Posts: 1752 Location: Albuquerque, NM PostPosted: Fri Dec 04, 2009 11:08 pm Post subject: Reply with quote GMPD books show 1115248 coil for 67-9 V8 UHV. No other part number; all other V8 64-72 take 1115238 in the 11/72 book. The 11/67 book shows 1115134 for 66-7 V8 exc. UHV. In 68, 350s went to 1115238. _________________ 1966 Club Coupe OCA #3150 GMPD was formed in 1970 and took over all the division's service and parts warehouses. They commonized applications and scrapped all kinds of stuff. Any Parts manual after about that date shows mostly service replacement part numbers, not necessarily what the car came with... My guess is that 248 represented the last 3 digits of the part number as his info jibes with yours. Others were probably Pontiac..
Dave, I also have the 72 Oldsmobile parts book down in the basement along with Delco Remy catalogues and buyers guides from 1968 thru 1971 and that's pretty much the information I came up with too. I sure wish the guy that replied to your question had elaborated on what the 11/67 book shows as the correct coil for UHV applications, but, ferreting out in depth information is usually not easy. Thanks for trying though. I guess I'll have to try on some of the Pontiac boards. Have any suggestions??
John: Joseph (Joe" Donnelly) is a really nice guy. He owns and restored a perfect replica of Vance Brady's record setting 66 W30 (Run to Rund)with John Molnar driving. He shows it at the OCA nationals and they run it at the accompanying drag race..John takes a break away from his funeral home in Southgate, MI to drive the car with Joe. He's a wealth of information on anything Oldsmobile, especially the earlier models like his 66. He did a lot of research over the years. You two would get along great. He can be reached through Realoldspower as he posts there regularly. Uses the Run ro Rund screen name. Rund Oldsmobile was the sponsor of that car (and a few others) on its day. His email address is: Donnellyj@msn.com;:bglasses:
I have a 66 parts manual, but it wouldn't show that. May even have some other years down there, lots of it there. I'll look. The 67, 68, and 69 assembly manuals may call out the production part numbers, too. I'll check that. :bglasses:
The problem with using the assembly manual to look up the production part numbers for coils is that the listed part number is for a subassembly -- one in which the coil is already mounted in the bracket (with RFI suppression capacitor, too). The engine assembly manual then shows this completed subassembly being installed on the engine. So you really have no idea which coil was part of a given subassembly. At least that's what I see in the 1970 engine assembly manual. Maybe earlier years would be different.
I'm thinking the reason that these coils used the 240 and 241 numbers that were embossed on them instead of 248 was because they were to be placed into coil brackets and the numbers on the coils would then be used to identify which engine got which assembly. I've heard that reasoning advanced for the different coils on say a 69 Camaro that got a 238 coil on a open air cleaner Z28 and a 270 coil on a cowl induction Z28. The coils were internally the same, but the different numbers visible on the assemblys were to differentiate for the coil brackets, which had a different angle on them to give clearance for the air cleaner. So, maybe one of these red coils would have gone on a car with ram air, and the other could have gone on a car without ram air. o No:
I have some evidence from looking at 1971 Oldsmobile and Delco literature that the three digits embossed in the coil can are the last three digits of the GM part number for the coil itself (less bracket) -- but that in many cases these coils were only factory installed. The replacement coils from any parts counter were immediately condensed into fewer part numbers. Again, this evidence is not conclusive. Sorry, I don't feel like typing it all out. I welcome opinions and facts from others.
I finally got my hands on the Red Delco coils. The numbers on them are 240 and 241, but they both are embossed with 12-V and not CD, even though they are for the UHV Olds/Pontiac CD ignition. Let me try to attach some pictures. The first pictutes are of the 240 12-v coil. There is a small dent at the bottom edge of this one. A fresh paint job wouldn't hurt anything either.
Here's what the 241 coil looks like. It says 12-V also. This one could use a fresh paint job too, but there are no dents in it.
