Author Topic: AC43 Original vs. AC43 reproduction  (Read 2216 times)

68camaroz28

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AC43 Original vs. AC43 reproduction
« on: June 10, 2020, 02:52:56 AM »
Recently I purchased a set of the AC43 reproduction spark plugs for $59.95 to compare to originals. I must say after installation one would have a difficult time knowing original or repro, as the differences are in the spring washer and script & knurl on the lower barrel of the spark plug. Script on the originals is "AC SPARK PLUG FLINT MICH MADE IN U.S.A." Repro plug on right side!


Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

z28z11

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Re: AC43 Original vs. AC43 reproduction
« Reply #1 on: June 10, 2020, 03:04:37 AM »
Look pretty good - I didn't realize somebody was reproducing them.

Besides the barrel knurling and washer, there's another hidden difference in the electrode tip (fluted). I'd be proud to use these - who's offering them ?

Regards,
Steve
1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6

ZLP955

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Re: AC43 Original vs. AC43 reproduction
« Reply #2 on: June 10, 2020, 09:12:11 AM »
Thanks for the comparison Chick!
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

68camaroz28

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Re: AC43 Original vs. AC43 reproduction
« Reply #3 on: June 10, 2020, 10:41:15 AM »
Look pretty good - I didn't realize somebody was reproducing them.

Besides the barrel knurling and washer, there's another hidden difference in the electrode tip (fluted). I'd be proud to use these - who's offering them ?

Regards,
Steve

Steve, happened to see and purchase from Zip Corvette for $59.95. They also have R44 for same price!
https://www.zip-corvette.com/instantsearchplus/result/?q=reproduction%20ac%2043
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

mgreenz

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Re: AC43 Original vs. AC43 reproduction
« Reply #4 on: June 10, 2020, 05:06:55 PM »
Great information Chick. Thanks for posting it. I’ve recently looked at purchasing original AC 43’s and will use the info to either do so or to purchase the reproductions.
___
Terry