CRG Discussion Forum
Camaro Research Group Discussion => Research Topics & Reports => Topic started by: KurtS on August 02, 2018, 03:17:45 AM
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Lots of questions on what ignition coil is original. An often changed part and the original configurations are poorly documented in manuals.
One thing to know - the coil and bracket were shipped as an assembly to the assembly plant. What is a bit different is the last three digits of the assembly part # were the numbers embossed into the coil. The various brackets changed the angle /location of the coil for clearance.
Also the BR embossed on the coil went to B-R for 69 (the drawing change was dated 9/12/68)
What I know from the AIMs and broadcast sheets and car data.
67-69 L6: 1115208
67 V8: 1115267 used on many applications including LF7(base 327), L35, and L78.
Appears 270 and another coil (290??) were used on SS350 and L30 cars. It looks like the wiring harness and ignition resistance wire changed and so it may be an early vs late thing.
68 V8: 1115293 - all engines
69 V8: 1115293 - used on all engines except below
1115298 - Z28
1115270 - Z28 and L48 with cowl hood (but not BB with cowl hood)
1115210 - ZL1 TI units
After pulling this together, the biggest question is the coil for the 67 L30 and L48 cars.
And the differences between the brackets.
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Great info!!!!Thanks Kurt!
Keep on Cruising!!!!
Dave
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Does the BR or B-R mean something? or indicate something??
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I believe most (maybe all?) were made by Delco-Remy.
You may see BR or B-R and 12V or 12-V on them, depending on the year.
I am not aware of what the BR or B-R stands for.
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BR is believed to be for Ballast Resistor.
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BR is believed to be for Ballast Resistor.
Kurt
so the BR would indicate that the resistance wire or a ballast resistor must be used?
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I had this informative chart on coil usage bookmarked:
http://chevellestuff.net/qd/coil_numbers.htm
Mike
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What finish black is correct? Should they be 30/60 or gloss?
Thanks,
Buzz
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I am certain they are full gloss (not sure what the % was considered back then) based on the originals I have.
Mike
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These photos are of my original 208 coil. Looks like semi-gloss. May have been shinier when new. Hope this helps. Joe.
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298 for a 68 Z28
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298 for a 68 Z28
For a 68, that's in conflict with other cars have. They used 293's.
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So did the 69 Z28 use a different coil, or is it the coil/bracket that makes it a different part no.?
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"For a 68, that's in conflict with other cars have. They used 293's"
My survivor 68 Z28 has a 298 coil, which is also used on 69 Z28 with the flat hood.
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The docs are clear, one coil for 68 V8. But Danny's car is a 298. Several others are 293.
I don't have a single Chassis Broadcast sheet for a 68 Z which would tell us something.
Wonder what's on Chick's and Steve's cars.
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My one owner Pace Car L48 is a 270BR. 04C built.
Rich
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Was the 270 only coupled with the coil bracket which had a steeper angle to it?
The cowl induction air cleaner, the 67 L48 L30 Aircleaner were all larger in diameter and would not allow the regular coil to be positioned where it was with the "upright" bracket.
I was going through My brothers 73 Corvette and saw it also has a 270 coil and bracket which leans more than others.
(https://lh3.googleusercontent.com/pw/ACtC-3c3kPWuvXLCV4lAFY-QUAuK111ny_MBxt4i7PaokelCPRuBzvkBUYY4Oc94wRY0y92BIox0VX3ifeElzKU8j0R1eL7nrkDDRdgsCVfkrD4o-g8st_yv-Iw1ocQmdzTnenmYW0V3b2qiZgq0CFAg2ZFm_A=w1281-h854-no?authuser=0)
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James, That is what we've been told the difference is by JohnZ... The '270' number represents the coil AND the leaning bracket!
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Delco had a baffling way of numbering the coil & bracket. The coil number is actually the assembly number. So even though a 270 coil and a 290 coil have different #'s, they might be the same internally!
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I was scanning thru the MacNeish book expecting to see details about coils - absolutely nothing. This indicates to me that if Jerry didn't list it, it wasn't unique to the 67-68 Z28's. Resistance wires were a common usage, but the 69 Z used a different coil. According to a Camaro Fact book I have the coil was painted gloss black.
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The docs are clear, one coil for 68 V8. But Danny's car is a 298. Several others are 293.
I don't have a single Chassis Broadcast sheet for a 68 Z which would tell us something.
Wonder what's on Chick's and Steve's cars.
Finally got a Chassis sheet for a 68 Z - same as 69 Z, so probably a 298. (Most of the time if they reused a code, it was the same part.)
Made the info part of the site: http://www.camaros.org/engine.shtml#coils
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had to check my coil from an original 327 car and to my amazement it was the original - 293. I think Jerry's book needs to be corrected to show that Z's came with the 298.
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My apologies to the OP - the 293 for 68 seems to be the one used on Z's -checked on some restorations noting this ;)
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My apologies to the OP - the 293 for 68 seems to be the one used on Z's -checked on some restorations noting this ;)
I went through that above - it appears to be 298 for 68 Z's, with docs to back that up.
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My apologies to the OP - the 293 for 68 seems to be the one used on Z's -checked on some restorations noting this ;)
I went through that above - it appears to be 298 for 68 Z's, with docs to back that up.
Check out this thread on the owner of an original 68 Z - the coil on it is a 293 - the MacNeish book usually is very spot on for any differences between
the 68Z's and the other models and he did not state anything unique about the Z coil. That would indicate that the 327 / 302's used the same ones.
https://www.camaros.net/threads/time-for-another-68-z-28-to-be-restored.182584/page-25#post-1695123
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According to this article, the ignition coil used on the 1968 Z28 with the transistorized ignition was different:
http://www.camaros.org/trans_ign.shtml
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According to this article, the ignition coil used on the 1968 Z28 with the transistorized ignition was different:
http://www.camaros.org/trans_ign.shtml
Transistor coils have different resistance values across both windings.
If you haven't priced a real transistor ignition coil... NOS ones are in the $500 range IF you can find one. Used are sometimes as high.
I didn't know the TI for a 68 was available except through the parts department on Camaros. It was available as optional in 68 vettes on engines L79 L36 L68 or required on the L71 L88.
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I believe that my friend's 1968 Z28 had its original distributor and after he rebuilt the engine for racing, I remember him power-shifting the motor into second gear and the Sun tach was reading 8700 rpm as I pulled my legs onto the passenger seat as the car didn't have a scatter shield. I've asked previously about the performance of the 1968 Z28 transistorized distributor, but have never gotten a reply.
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The TI system was good to 10k or better without breaking up.
The 207 TI coil was the over the counter coil available through out the time Chevrolet offered them through the parts dept. The earlier 207's are embossed the later ones are ink stamped. it's first application is mid 65 -67 small block vette applications 350 365 375hp
The Corvette TI coils installed assembly line other than the 207, were, like the ZL1 coil not available as a service part.