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Author Topic: Repro vs. NOS spiral shock tube  (Read 7069 times)

Mike S

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Repro vs. NOS spiral shock tube
« on: September 23, 2018, 12:01:45 AM »
  I know some folks look for the correct numeric fonts to stamp a Julian date into a reproduction spiral shock, but I figure what's the point if you can easily spot a repro. Here is a picture of a reproduction Hugger Performance spiral shock next to a NOS (late 67 date) spiral shock to show the difference. As you can see, the NOS spiral in the tube is much wider and deeper compared to the reproduction.  That should make it easy to spot a real or a repro.

Mike
« Last Edit: September 23, 2018, 01:22:16 AM by Mike S »
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cam69aro

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Re: Repro vs. NOS spiral shock tube
« Reply #1 on: September 23, 2018, 12:45:27 AM »
night and day difference
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Eldon W 1969 z28 Black with born with driveline X77 38,000 miles-sold
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ZLP955

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Re: Repro vs. NOS spiral shock tube
« Reply #2 on: September 23, 2018, 06:25:36 AM »
Mike is there a lip around the bottom of the upper tube on the NOS shock? Seems to be a faint line there.
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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.
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x66 714

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Re: Repro vs. NOS spiral shock tube
« Reply #3 on: September 23, 2018, 12:08:47 PM »
Not all of the repros have the narrow shallow groove. The ones at Tamraz & Parts Place look closer.
According to their ads, Tamraz shocks are made in Taiwan & Parts Place shocks are made in the USA...Joe
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See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

Mike S

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Re: Repro vs. NOS spiral shock tube
« Reply #4 on: September 23, 2018, 08:59:14 PM »
Quote from: ZLP955 on September 23, 2018, 06:25:36 AM
Mike is there a lip around the bottom of the upper tube on the NOS shock? Seems to be a faint line there.
  No lip. It must be the way the light is reflecting off the shock.

Mike
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67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

Mike S

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Re: Repro vs. NOS spiral shock tube
« Reply #5 on: September 23, 2018, 10:12:30 PM »
Quote from: x66 714 on September 23, 2018, 12:08:47 PM
Not all of the repros have the narrow shallow groove. The ones at Tamraz & Parts Place look closer.
According to their ads, Tamraz shocks are made in Taiwan & Parts Place shocks are made in the USA...Joe
  Maybe this would be a good comparison thread then of the different vendors. I thought Hugger Performance was the sole supplier.
We have Hugger Performance shocks pictured.
Anyone wish to take a picture of their repro shock to post for comparison?
You don't have to remove it from the car...just a closeup of the tube is good and who it was purchased from.

Mike
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firstgenaddict

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Re: Repro vs. NOS spiral shock tube
« Reply #6 on: December 31, 2018, 07:53:53 AM »
The guy who supplies the corvette shocks and other spirals uses NOS unstamped spirals and stamps the dates and the part numbers.
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James
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Danzo

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Re: Repro vs. NOS spiral shock tube
« Reply #7 on: December 31, 2018, 01:15:01 PM »
These appear to be closer.
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Mike S

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Re: Repro vs. NOS spiral shock tube
« Reply #8 on: December 31, 2018, 01:18:26 PM »
 The Tamraz shocks look more like the NOS ones I have.
When I start on my other 67 resto I will look at these.

Mike
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67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

firstgenaddict

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Re: Repro vs. NOS spiral shock tube
« Reply #9 on: January 01, 2019, 04:46:50 PM »
DANS SHOCKS - passes NCRS judging.
https://dansshocks.com/chevelle-camaro-nova/

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James
Collectin' Camaro's since "Only Rednecks drove them"
Current caretaker of 1971 LT1's - 11130 and 21783 Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

cook_dw

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Re: Repro vs. NOS spiral shock tube
« Reply #10 on: January 01, 2019, 07:31:23 PM »
Quote from: Mike S on September 23, 2018, 08:59:14 PM
Quote from: ZLP955 on September 23, 2018, 06:25:36 AM
Mike is there a lip around the bottom of the upper tube on the NOS shock? Seems to be a faint line there.
  No lip. It must be the way the light is reflecting off the shock.

Mike

I know this was an little older post but wanted to give some insight.  The original & NOS spirals (rears) have a very small and slight "bell" shape to the lower portion of the upper section of the shock.  Here are a couple photos that will hopefully show that.  It is very subtle but is present.


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Mike S

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Re: Repro vs. NOS spiral shock tube
« Reply #11 on: January 01, 2019, 08:15:41 PM »
 I looked again at the NOS and unless I shine a light from the bottom up to look at shadows, the bell is very faint.
It is hard to feel it though.

Mike
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67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored
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