kyb shocks/ part numbers

[jared78]

Originally Posted by lolife99

jared78,... sorry your thread got hijacked.
The fronts will be the same 67-87.
The rear shock numbers I posted are for 67-72 coil spring truck. I will edit my post.
Maybe calling KYB would be the best bet.

I don't think the thread was hijacked, still some good info. I did call KYB to get some info on extended and collapsed lengths, but they said they wouldn't publish that info or give it out. So I got a lowered gr2 number that I can cross to a gas a just number. I just need a rear number for a 6" drop leaf spring truck. A 4" drop shock could work too, I'll just get lower mount relocators. Thanks again for the help guys.

[72BlckButy]

Here's KYB online catalog:

LINK

[72BlckButy]

Here's what I determined for 1973-1987 and 1967-1972 Chevrolet C/10 pickups:

1973-1987:

FRONT GR2 344068 Shock Absorber 2 RWD
REAR GR2 344072 Shock Absorber 2 RWD
FRONT GAS-A-JUST KG5409 Shock Absorber 2 RWD
REAR GAS-A-JUST KG5415 Shock Absorber 2 RWD
FRONT MONOMAX 565032 Shock Absorber 2 RWD
REAR MONOMAX 565036 Shock Absorber 2 RWD

1967-1972:

FRONT GR2 344068 Shock Absorber 2 w/ Coil Spring RWD
FRONT GAS-A-JUST KG5409 Shock Absorber 2 w/ Coil Spring RWD
REAR GAS-A-JUST KG5416 Shock Absorber 2 w/ Coil Spring RWD
FRONT MONOMAX 565032 Shock Absorber 2 w/ Coil Spring RWD
FRONT GR2 344068 Shock Absorber 2 w/ Leaf Spring RWD
REAR GR2 344085 Shock Absorber 2 w/ Leaf Spring RWD
FRONT GAS-A-JUST KG5409 Shock Absorber 2 w/ Leaf Spring RWD
REAR GAS-A-JUST KG5419 Shock Absorber 2 w/ Leaf Spring RWD
FRONT MONOMAX 565032 Shock Absorber 2 w/ Leaf Spring RWD
REAR MONOMAX 565037 Shock Absorber 2 w/ Leaf Spring RWD

For the '73-'87 trucks it mainly depends on the type of KYB shock you want to purchase. As for the '67-'72 trucks it depends on the type of KYB shock, but also the type of rear suspension. It looks like there isn't a difference on the height, or lack there of, of your suspension travel. Low and slow...

KYB Shock Difference:

KYB GR-2® / Excel-G®
twin-tube shocks, struts, and cartridges
Purpose: Restores a vehicle’s originally designed handling and control

Calibrated to compensate for worn suspensions
Components and valving are designed specifically for each application
The best choice to restore OE performance and normal driving conditions
Built with quality that matches or exceeds OE
Coverage for domestic and import cars, trucks, vans, minivans, and SUVs

KYB Gas-a-Just®monotube shock absorbers
Purpose: Significantly increases vehicle stability, handling, and control over twin-tube designs.

Gas-a-Just is the replacement for an OE monotube shock
Ideal as an upgrade from an OE twin-tube
The more responsive monotube design automatically adjusts to driving conditions
Applications for cars, trucks, vans, and SUVs

KYB MonoMax®heavy duty monotube shock absorbers
Purpose: Maximum control for trucks and SUVs – stronger, more durable truck shock

The right choice for hauling, towing, or plowing
The best performer on harsh road conditions
Perfect for diesel trucks
Applications for light trucks, vans, and SUVs, including some lifted and lowered vehicles

I hope this helps guys...

[N2TRUX]

Nice research guys...

[ap2002]

i just bought the KYB #344068 for the front from summit for like $57 shipped for both of them... i called ECE and they wouldnt give any info at all, they said KYB builds some custom shocks for them? the guy really sounded like he was full of b.s.,

[72BlckButy]

For the most accurate information related to these drops I would contact ECE personally. However, I don't know why the 344067 shocks wouldn't work for a 5" drop.

[ap2002]

this says that the 344067 is a shock for the front NOT the rear?

http://store.summitracing.com/partde...art=KYB-344067

[Tx Firefighter]

The front and rear shock absorbers on 67-72 coil spring trucks will interchange if you wanted to. I have done it before. Front to rear, etc..

Second, ECE simply has done the research and determined appropriate shocks for lowered applications which they buy from KYB. Then, they cover over the official KYB part number on the box with their part number to save their proprietary information.

There is no way in hell that KYB makes specific shocks just for Early Classic. No way, no how.

If you buy the KYB shocks from ECE (like I have done many times) when you look closely at them, the KYB part number is stamped into the shock body right near the bottom eyelet.

After buying a few sets from ECE, nowdays when I buy KYBs, I simply order the KYB part number from Summit to save a good bit of money. Sorry ECE, times are tight. A KYB is a KYB regardless of where they come from.

On lowered trucks, the KYB GR-2 is much more suitable than the Gas-A-Just units are. The GR-2 is softer and helps the ride considerably.

[ap2002]

thanks alot "TX Firefighter" for the info....

[70c10]

I'm happy with my Gas adjusts on the front so I bought a set for the rear but have yet to install them. My dad went with the GR2 shocks for the softer ride and they are nice also. KYB's are nice shocks

[Tx Firefighter]

If you are running the Gas-A-Just on the front, be sure and keep an eye on your upper shock studs. They have a problem with coming loose and wallowing the frame hole out anyway, and the stiffer shocks will agravate that even more.

[ap2002]

just to give yall an update, i installed the KYB 344068 shocks on the front, and i am completely satisfied!!! the truck rides a whole lot better, alot let body roll for some reason? my only guess is that the old shocks were worn out but they seemed to be not too old?

[chevyrestoguy]

On our trucks where we have flip kitted the rear, we have essentially moved the shock attach point up the same amount as the drop (usually 6 inches). I have researching shock data to try and find a suitable shock and many places list the extended and collapsed lengths. Would this theory apply in this example below?

Stock (rear):
Extended: 23.26" Collapsed: 14.23 Stroke: 9.03"

For a 6" lowered rear suspension and NO shock extenders, would you look for a shock with 6" removed from each of these numbers? That would be a very short shock in the collapsed position.

I need to get my notches done and do a full extension/full retraction test and see where the numbers lie and shoot for a shock that has the range I'm looking for. I have found that when you start looking at shorter length shocks, the shaft sizes and body diameters shrink also, and that's not good on a truck.

[XXL]

bump

[Tx Firefighter]

Here is what I know.

If you buy a front shock from ECE, it comes with their sticker on the box making the KYB number unreadable. The number on the shock is 344068. I ran these shocks for 100k miles on my 72 with drop spindles and 3 inch drop springs. Never bottomed out the shock. They are plenty good for 3 inch drop coil application.

In the rear, again ECE sourced shock, true pn 244055 works well with a 6 inch drop and aftermarket shock extenders like ECE, etc. This shock will allow the axle to bottom completely to the frame and still not fully collapse the shock. With 6 inch coils and any lowering block combo it will serve you well. Keeping in mind that only the coil affects shock travel. A lowering block does not affect the shock length.

[XXL]

All of this shock information is splendid!

[chuck3026]

Any suggestions for a KYB part # on a 5" axle flip it leaf spring drop in the rear.

[JNJchev77]

Anyone using KYB's for front dropmember setup? If you have a part number or where to find them that would help...

[72BlckButy]

Originally Posted by JNJchev77

Anyone using KYB's for front dropmember setup? If you have a part number or where to find them that would help...

You might want to post this as a separate question in the Suspension section, just so you can ensure you receive the right responses.

[djinva]

I am still a little confused on the rear shocks for a 71 with coils, I read several different KYB part numbers in this thread. 344055, 344085, 344067, 244055. Mine is dropped 4" with the springs and I want to be sure and order the correct shock. I was going with the 344055 but when I look it up it is for a Fiat and a Nissian Quest, which are both much smaller vehicles.

I would appreciate any input.

[72BlckButy]

Call ECE... they sell 2/4 drop kits which utilize the KYB shocks. They should be able to sell you the correct shock within a couple of minutes. Not reservations, the shocks will work.

[djinva]

I called ECE and they tell me they use the same shock on the rear of these coil sprung trucks no matter how much it has been dropped. Problem is I was going to order from summitt to save a $ and I am still not sure of the correct KYB part number.

[Twisted78SS]

As many know, there are several threads related to shocks for lowered trucks. I gleaned a bunch of useful info. Here is some that should answer the question about 4 in. drop in the rear.. You can take these numbers and cross reference them to whatever brand you like.


Front Shocks

Doetsch Tech Shocks*
DT4809G 1960-62 front Doetsch Tech Shock stock height


DTM1200GLL 1960-62 front Doetsch Tech Shock lower height


DT4052G 1963-72 front Doetsch Tech Shock stock height


DT4809G 1963-72 front Doetsch Tech Shock 1"-2" lowered


DTM1200GLL 1963-72 front Doetsch Tech Shock 3" lowered


• KYB Shocks KYB "Gas-a-Just" nitrogen*

KYM1200G 1960-62 front lowered KYB Shock, 2"


KY4809G 1960-62 front stock KYB Shock

KY4809G 1963-72 front lowered KYB Shock, 1"-2"


KYM1200G 1963-72 front lowered KYB Shock, 3"


KY4052G 1963-72 front stock KYB Shock*


Rear Shocks

KY4163G 1963-72 w/ rear leaf stock or 1" - 2" drop


KY4095 1963-72 w/ rear leaf or 2" - 4" drop


KY4052G 1963-72 w/ rear leaf or 5" drop

KY4163G 1960-62 rear lowered*


KY4231G 1960-62 rear stock


KY4095 1963-72 rear lowered 2"-4"


KY4052G 1963-72 rear lowered 5-1/2"


KY4163G 1963-72 rear stock

[djinva]

thanks for the info, according to your chart I would need the KY 4095, however when I call summitt they say that is not a good part number and cannot cross it over to a KYB number, so I am still confused.

[Twisted78SS]

My bad, in a hurry to get the info posted I should have pointed out some of these numbers came from the CPP website. I believe they are re-numbering the KYB shocks before they ship them. I will have to dig back and find the equivalent numbers.