MY ORIGINAL ZL-1 MOTOR DYNO'D !!!!! 540 HP!!

[John Brown]

343 is the correct amp.

More accurately, I was wrong on the coil. It was #210 from the factory.

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Transistor Ignition Coils

TI systems use a special ignition coil. These coils have lower impedance than the standard ignition coils and are capable of flowing much higher current. This allows them to make a hotter spark at high RPM ranges when the spark plug voltage requirement is higher. If a standard coil is used, it will not be able to generate sufficient secondary voltage to work properly. Though there were several TI coil numbers, only two pertain to use on the Camaro. Part # 1115207 was the coil used for all OTC systems. (Photo 7) Part #1115210 was the exclusive coil that came from the factory on the 1969 ZL1 Camaros. The only number available as a service coil was the #1115207. The “210” could not be purchased at the dealer.

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Here's the whole article in the T.I. ignition.

http://www.coloradocamaroclub.org/trnsignrevision4.htm