Original ignition coils

[RichSS2006]

My one owner Pace Car L48 is a 270BR. 04C built.
Rich

[firstgenaddict]

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.

[69Z28-RS]

James,  That is what we've been told the difference is by JohnZ...  The '270' number represents the coil AND the leaning bracket!

[KurtS]

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!

[x55cam]

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.

[KurtS]

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

[x55cam]

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.

[x55cam]

My apologies to the OP - the 293 for 68 seems to be the one used on Z's -checked on some restorations noting this 

[KurtS]

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.

[x55cam]

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

[GMAD_Van Nuys]

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

[firstgenaddict]

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.

[GMAD_Van Nuys]

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.

[firstgenaddict]

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.