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Old 07-25-2016   #1
GOLDCYLON
 
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Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
Default Power Steering Rack model number

Anybody know what model our Power steering rack is. They seem to have a two letter designation. Are they the same as a regular C4 ?

My build sheet has the 2 letter designation of AW for the Steering gear
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GOLDCYLON - 91 ZR-1 #2014
GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's)

GOLDCYLON - 11 CTS-V


Arizona State Director




91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat

90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat

11 RED/GREY CTS-V

Last edited by GOLDCYLON; 07-25-2016 at 02:29 PM.
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Old 07-25-2016   #2
Hib Halverson
 
Join Date: Jun 2005
Location: CenCoast California
Posts: 899
Default Re: Power Steering Rack model number

Quote:
Originally Posted by GOLDCYLON View Post
Anybody know what model our Power steering rack is. They seem to have a two letter designation. Are they the same as a regular C4 ?

My build sheet has the 2 letter designation of AW for the Steering gear
My GM parts data shows the steering gears are all the same from 90-96 but the info does not list steering rack codes after 1985.
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Hib Halverson
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former owner 95 VIN 0140
current owner 19 VIN 1878
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Old 07-25-2016   #3
GOLDCYLON
 
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Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
Default Re: Power Steering Rack model number

Quote:
Originally Posted by Hib Halverson View Post
My GM parts data shows the steering gears are all the same from 90-96 but the info does not list steering rack codes after 1985.
Thanks Hib
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GOLDCYLON - 91 ZR-1 #2014
GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's)

GOLDCYLON - 11 CTS-V


Arizona State Director




91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat

90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat

11 RED/GREY CTS-V
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Old 07-25-2016   #4
WVZR-1
 
Join Date: Oct 2004
Posts: 1,890
Default Re: Power Steering Rack model number

What if any is the 2 letter code on the "end plug" at the pinion/spool valve housing. I've never compared that to the build sheet of any car. It would be an interesting check. I've also never seen the code mentioned for anything '90 or newer and I'm quite sure they're identical. All service SPO" racks are the same '90+.

It's a damn Saginaw rack and any "reseller" should be able to ask the right questions. A C4 rack is a "you pick" the ratio!!


I believe the ratio was spec'd to 15.7:1 and mentioned as being 2.32 turns

Last edited by WVZR-1; 07-25-2016 at 08:19 PM.
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