Does anyone know what the difference is in a Bilstein shock w/pn ending "H1" vs. "H0"?

http://www.bilsteinus.com/cart/ymm.p...ORVETTE&zenid=

Basically, looking at their site, I can't see what the diff is between the rears:
F4-B46-2056-H0 http://www.bilsteinus.com/cart/index..._id=909&zenid=
F4-B46-2054-H1 http://www.bilsteinus.com/cart/index..._id=907&zenid=
F4-B46-2054-H0 http://www.bilsteinus.com/cart/index..._id=906&zenid=

And the fronts:
F4-B46-2053-H0 http://www.bilsteinus.com/cart/index..._id=904&zenid=
F4-B46-2053-H1 http://www.bilsteinus.com/cart/index..._id=905&zenid=
F4-B46-2055-H0 http://www.bilsteinus.com/cart/index..._id=908&zenid=

 

SOMEBODY has ordered bilsteins on this forum...

 

I noticed the same thing, I've no idea what the "H1" vs "H0" is, though I wonder if one includes some hardware or something that the other does not?

Did you contact Bilstein?

 

Call Randy Rippie at DRM. That is how i found out what my codes meant.

Bilstein never responded to my direct questions.

Randy has been very helpful and is a Forum supporter.

DRM sells Bilstein and seems to be able to get answers from them fairly quickly.

He may have input on the rear E brake issue you have as well??

TJM

Just got a set of SPORT settings in, Code H1.

 

I'm a product engineer for Bilstein. I'll pull up the Bill of Material for those parts and find out for you on Monday.

FYI -- The "Hx" portion of the part number indicates the revision level of the part. We start at 0, so H0 indicates the initial release of the part.

 

Okay, here's the scoop:

The H1's vs. H0's for these part numbers are identical from a function and performance standpoint (I suspected that, but I have now verified it). The front shocks received a tweak to the part label on the shock which changed it to the H1 level. The rear shocks were changed to H1 when the manufacturing location changed from Germany to our US manufacturing plant near Cincinnati.

Typically, we will change the part number if we make a change that affects the performance. Revision levels to a part usually indicate a change to a component that does not affect performance (labels, change in component supplier, etc).

You can use either H0 or H1 shocks with the confidence that they will perform identically.

 

Weird that I didn't see your posts until now. Thank you for posting. I understand what you wrote, but looking some more, it seems like the "HO" is for the ZR1 and the "H1" is for regular 'Vette. I'm getting that from here;

"Shock/Strut, Sport Series, Monotube, Front, Chevy, Corvette, Each"
These are $83 each

"Shock/Strut, Sport Series, Monotube, Front, Chevy, Corvette ZR1, Lowered, Each"

These are $190 each

...so something must be different. Also, it appears that there is no "Sport" shock for the rear? Only the HD shock in the rear?

-Tom

 

The HO and HI are valving codes. They indicate different valve pressure for different applications. For example one series of shock with the "HI" suffix may have a pressure of 255/70 while the lighter version in the same application with the "HO" suffix may have a pressure of 170/60. Obviously the "HI" version are stiffer than the "HO".

 

Makes sense. Why is the ZR1 valving so much more expensive than the regular?

What about "Sports" for the rear?

-Tom

 

I think that is either a custom or adjustable height which they seem to charge double for. Bilstein is a screwy outfit. What car are you ordering for a 1992 LT1?

I would not mix HD and Sport shocks on the same car. Sport shocks are really made for the Z51 suspension. Unless you want a really firm ride I wouldn't buy the Sport shocks.

 

Yes, it's a '92 LT1. Base car right now, but I have plans.

I want taut handling over "nice" ride. I would prefer the "Sport" shocks (I think -haven't tried them), and I THINK that they would work toward my ultimate goals better.

My '06 Z51 rode too soft, IMO, and did the "Whoopty-whoop" over rollers.

My '05 CTS-V could be firmer, but body motion is well controlled (No "Whoopty-whoop").

I had a '86 Camaro w/springs, 1LE sway bars, bushings and Koni's. That was a good driving car/suspension, IMO... If that gives you any idea of what I'm looking for. Is there a "Sport" for the rear? And if so, why can't I find it?

-Tom

 

Corvette Central sells a set of 4 Z51 shocks for $299.

 

All ZR-1's came with the FX3 Selective Ride Control system. These shocks are adjustable by changing the position of a switch on the console and they are further fine-tuned by a system controller that uses vehicle speed to make real-time adjustments.

If your car doesn't have FX3, ZR-1 shocks won't do anything for the car. The '92 had 3 different suspensions available. First was the base FE1 suspension with bse springs and shocks. The next level was FX3 by itself; that included base springs and the adjustable shocks. The top level was Z07 which included stiffer springs, larger sway bars and the FX3 shocks. Also included were stiffer lower control arm bushings.

"Z51" was no longer an option after 1990. It was replace with the Z07 package going up thru 1995. In '96 and later, Z51 returned.

IF you want to improve the overall handling of the car, you may wan to look at the Vette Brakes "Sport Ride" system. This package includes stiffer springs, bigger sway bars, Bilstein "Sport" shocks, and poly suspension bushings. This is a kit that has components that are matched so you don't have to try to figure out shock and spring combinations.

 

While all that is true the Z51 type "sport shocks" are available and will fit 1992 thru 1996 C4 Covettes. Lots of people have installed them. Personally I think it is a poor choice, but it will work. The ride will be harsh.

 

Did you read the post from the guy who works at Bilstein? He said that is a revision code.

 

I gave it the consideration it deserved. All you have to do is read the Bilstein catalogs to see how valving suffixs are used.