Author Topic: COILS  (Read 1232 times)

ALLZS

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COILS
« on: October 14, 2019, 12:51:04 PM »
way did the flat hood 69 z28 have the 293 coil & the cowl hood have the 270 coil ?

69Z28-RS

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Re: COILS
« Reply #1 on: October 14, 2019, 01:19:25 PM »
My understanding is that the coils themselves are the *same*, but the 'bracket' that holds them (and is associated with the part number) is the only difference..   

No, It doesn't make sense to me WHY GM did that (putting the PN? for an assembly on the part of the assembly that was the SAME, rather than on the part that was different)...   But it's been stated repeatedly by people who know so it must be true...
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

70z28lt1

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Re: COILS
« Reply #2 on: October 14, 2019, 03:14:38 PM »
The 270 coil bracket laid the coil down at a greater angle (23 degrees comes to mind) to clear the larger diameter cowl hood air cleaner housing.  The 293 coil-bracket assembly was I think 17 or 18 degrees?  Too many numbers to remember.  Anyway, generally speaking I've always heard that the coils, due to them having oil inside fro cooling the windings, should avoid be inclined in order to keep the oil inside.  Maybe that's an old hot rodders tale.

ZLP955

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Re: COILS
« Reply #3 on: October 14, 2019, 07:37:34 PM »
FWIW, my flat hood Z/28 has a 298 coil not a 293. The car is far from original due to being raced, but as far as I'm aware, the 298 coil is correct for flat hood Z/28.
Edit: Link to CRG Coil research thread here (couldn't find it at the time of original reply):
http://www.camaros.org/forum/index.php?topic=16716.0;all
« Last Edit: October 14, 2019, 08:35:58 PM by ZLP955 »
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

 

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