437 Transistor Ignition Coil

[Page C.]

I recently aquired the TI coil pictured below with the 207 adhesive sticker. I knew there was an embossed number under the sticker but was reluctant to remove it. I instead did a rubbing with paper and a lead pencil over the 207 adhesive sticker and the number under it was 437. This appears to be a real Delco coil. The ohm reading on the primary and secondary windings indicate that it is a TI coil. Did a search of the archives and came across a question posted by member Tim Barbieri back in Aug 2007. He also had a 437 TI coil but without the 207 adhesive sticker. He received only one response to contact Dave Fiedler. Dave has written many great articles for the Restorer Mag. including Vol 21 #4 on TI coils. Another great article was written by Ken Kayser (Vol 21#3 and Vol 22#2) on identifying 1953-74 Delco coils. There seems to be no information on the 437 TI coil. Tim and I are hoping someone else possibly has or has seen one of these coils since Tim Barbieri posted back in 2007. There is one currently for sale (not mine) on ebay with the 207 adhesive sticker and the delco box. Adding the GM 1115 part number (1115437) to it was also a dead end. Tim and I think that these coils were made with the wrong number embossed in the can and when discovered rather than throw them away they used the adhesive sticker.207 TI Coil 001 #1.jpg207 TI Coil 002 #2.jpg207 TI Coil with 437.jpg207 TI Coil ebay#1.jpg

[Ara G.]

Re: 437 Transistor Ignition Coil

Very interesting coil. Obviously, normally we expect to see the Delco decal at the top of the units on TI coils - and your decal is on the lower portion of the body of the coil. Odd. I am by NO means an coil expert, but possibly the 437 coil had the same internals/specs as the 207 coils and that's why they put a 207 sticker on a 437 coil. Not sure. Possibly someone on here knows for sure. The age of the box you have does not look as old as the older cardboard canisters with the pull string, so possibly dating has something to do with it. Am interested to see what some others have to say. ARA

[Ken A.]

Re: 437 Transistor Ignition Coil

All TI coils have the same specs. The last 3 digits refer to the coil & bracket assembly so the line worker would put the right assembly on the intake, i.e., 263=all big blocks. The 207 was the ONLY service part sold over the counter and thus wound up all over the place. The 437 could have been a Pontiac/Olds part that was left over, so, hence the sticker cover up.

[Page C.]

Re: 437 Transistor Ignition Coil

The one pictured with the Delco box is the 207 coil that someone has for sale on ebay. I know nothing about it other than it has the same adhesive 207 sticker and the lower TI red/silver sticker like mine. It also has the lower placement red/silver TI decal like mine and Tim's.

[Dave S.]

Re: 437 Transistor Ignition Coil

The one pictured with the Delco box is the 207 coil that someone has for sale on ebay. I know nothing about it other than it has the same adhesive 207 sticker and the lower TI red/silver sticker like mine. It also has the lower placement red/silver TI decal like mine and Tim's.

Page,
My guess is you have some home made coil. Someone took a #437 Delco coil and added a couple of stickers. I've seen a lot of Delco coils over the years and have never seen or heard of anything like what you show. Any Delco TI coil I have ever seen has the TI sticker at the top of the can. Also original TI decals will have a paper back unlike the repro decals that are thin and are made from a foil like material.

[Joe L.]

Re: 437 Transistor Ignition Coil

I recently aquired the TI coil pictured below with the 207 adhesive sticker. I knew there was an embossed number under the sticker but was reluctant to remove it. I instead did a rubbing with paper and a lead pencil over the 207 adhesive sticker and the number under it was 437. This appears to be a real Delco coil. The ohm reading on the primary and secondary windings indicate that it is a TI coil. Did a search of the archives and came across a question posted by member Tim Barbieri back in Aug 2007. He also had a 437 TI coil but without the 207 adhesive sticker. He received only one response to contact Dave Fiedler. Dave has written many great articles for the Restorer Mag. including Vol 21 #4 on TI coils. Another great article was written by Ken Kayser (Vol 21#3 and Vol 22#2) on identifying 1953-74 Delco coils. There seems to be no information on the 437 TI coil. Tim and I are hoping someone else possibly has or has seen one of these coils since Tim Barbieri posted back in 2007. There is one currently for sale (not mine) on ebay with the 207 adhesive sticker and the delco box. Adding the GM 1115 part number (1115437) to it was also a dead end. Tim and I think that these coils were made with the wrong number embossed in the can and when discovered rather than throw them away they used the adhesive sticker.[ATTACH=CONFIG]55861[/ATTACH][ATTACH=CONFIG]55862[/ATTACH][ATTACH=CONFIG]55863[/ATTACH][ATTACH=CONFIG]55864[/ATTACH]

Page------


I have never before seen a coil used in PRODUCTION or sold in SERVICE which had a 3 digit label on it as the one shown here.

The package the coil is shown with is the old style "pull string" box which dates back to the later 60' to-early 70's. However, this one looks like someone has previously "pulled the string". That means you have no way of knowing if what's in the box now is what was originally in the box.

[Timothy B.]

Re: 437 Transistor Ignition Coil

Sorry I took so long to respond to this post, my cable has been out for two days.

The coil I have (#437) is exactly as Page describes but the 207 sticker has fallen off. I want to report this coil came to me as a complete TI package I bought from a friend. The TI distributor ID band has the part # for the never produced LS-7 and has a late 1969 date without a hole for the nylon tach gear button. I can't remember the band # but it may be in the archives or I can go and find it if someone wants to know.

I too searched for the 437 part # and came to a dead end so I am still stumped but this info needs to be in the D/B archives. I can only believe this coil was part of a over the counter TI set up that was sold off when the LS-7 (I believe) never went into production.

The email from Page and the ebay coil are the only 437 TI coils I have ever seen so maybe that part # was supposed to be used on that LS-7 and when it was not produced the coil got a #207 sticker and sold over the counter separate or as part of the complete TI package.

It's the only assumption I can make that makes sense to me but this information needs to be out there, thanks Page.

[Joe L.]

Re: 437 Transistor Ignition Coil

Sorry I took so long to respond to this post, my cable has been out for two days.

The coil I have (#437) is exactly as Page describes but the 207 sticker has fallen off. I want to report this coil came to me as a complete TI package I bought from a friend. The TI distributor ID band has the part # for the never produced LS-7 and has a late 1969 date without a hole for the nylon tach gear button. I can't remember the band # but it may be in the archives or I can go and find it if someone wants to know.

I too searched for the 437 part # and came to a dead end so I am still stumped but this info needs to be in the D/B archives. I can only believe this coil was part of a over the counter TI set up that was sold off when the LS-7 (I believe) never went into production.

The email from Page and the ebay coil are the only 437 TI coils I have ever seen so maybe that part # was supposed to be used on that LS-7 and when it was not produced the coil got a #207 sticker and sold over the counter separate or as part of the complete TI package.

It's the only assumption I can make that makes sense to me but this information needs to be out there, thanks Page.

Timothy------


I doubt it was a unique coil originally intended for the LS-7 application. I would expect that LS-7 would have used the same coil as earlier big block TI applications. More likely, it was a coil for some other GM application that had the same specs as the 207 coil. I also expect it was a PRODUCTION-only part number as I can find no information that it was ever available in SERVICE from GM for any GM carline or application. With coils, sometimes the part number embossed on the coil is not the part number for the coil, itself, but the part number for the coil ASSEMBLY with bracket, which is almost always a PRODUCTION-only part number. So, there might be two or more on-coil part numbers which use the same actual coil. GM #1115437 could have been the part number for such a coil ASSEMBLY and, perhaps, it was for some some non-Chevrolet application (e.g. Pontiac). Separated from its bracket, it becomes a '207'.

[Timothy B.]

Re: 437 Transistor Ignition Coil

That must be the reason then Joe, I always assumed the embossed # on the coil was the coil part # so it's good to know this information.

Thanks also to Ken for that information, there is still a part of me that would love to know the application that #437 came from. I am only aware of three of these so if anyone has any further info I would like to know.

[Ken A.]

Re: 437 Transistor Ignition Coil

According to Remy the 437 coil was superseded by the 207 coil which means the 437 was definitely a TI coil. No word on the original app however it shouldn't be on a Corvette.

[Page C.]

Re: 437 Transistor Ignition Coil

Tim,
Found your post on the dist, amp, coil, and harness you bought in 2007 in the NCRS archieves with a Google search. Our search engine is not too friendly. The dist was a 1111465.