Interior Discussion about interior restoration, repairs, and modifications.

4thgen ignition lock cylinder swap?

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Old Oct 15, 2013 | 07:40 PM
  #1  
dhirocz's Avatar
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From: Hinesville, GA USA
Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
4thgen ignition lock cylinder swap?

About a year ago I replaced my aging ignition lock with a parts store lock. Short story is it sucks. I can start the car without keys and/or pull the keys with the engine running. Total POS. I prefer the locks installed in a 4thgen, they have the lock button (for manual trans cars) and feel much stronger and more solid. Will they fit thirdgens?
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Old Apr 20, 2015 | 11:59 PM
  #2  
wildmon69's Avatar
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From: Minnesota
Car: 86 T/A/1990 Firebird
Engine: 5.3 L33 pt7675 / Ls1
Transmission: 4L80E/T56
Axle/Gears: 3.73/4.10
Re: 4thgen ignition lock cylinder swap?

Did you ever find out if the 4th gen ignition cylinder will work in a thirdgen column?
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Old Oct 21, 2015 | 02:46 PM
  #3  
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From: Darien IL
Car: 87 IROC
Engine: LT1
Transmission: T56
Axle/Gears: LS1 10bolt w/ 3.73
Re: 4thgen ignition lock cylinder swap?

and ill bump this as well, any answers?
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Old Oct 21, 2015 | 04:12 PM
  #4  
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From: Darien IL
Car: 87 IROC
Engine: LT1
Transmission: T56
Axle/Gears: LS1 10bolt w/ 3.73
Re: 4thgen ignition lock cylinder swap?

I may have found the answer, looking at Rockauto interchange guide, anything with VATS is interchangeable, so look for ACDELCO D1456C click on the part number it will show that it is good for '89+ camaros and '88+'birds, which leads me to believe the mounting points are the same, its just a VATS issue.

i might be adding this to my list for the winter.
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Old Oct 25, 2015 | 10:21 AM
  #5  
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From: Clark NJ
Car: 1988 Pontiac Transam GTA Notchback
Engine: 2003 Chevy 5.3 Vortec (325 cu)
Transmission: 4L60E
Axle/Gears: 3.27
Re: 4thgen ignition lock cylinder swap?

Ignition locks are the exact same. Lock wise the only thing that changed was the door locks. They went from code D to H. Really what that mean is that the grooves are different.
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Old Oct 25, 2015 | 10:16 PM
  #6  
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From: Darien IL
Car: 87 IROC
Engine: LT1
Transmission: T56
Axle/Gears: LS1 10bolt w/ 3.73
Re: 4thgen ignition lock cylinder swap?

thanks alex,

any idea if the 4th gen lock cylinder for a manual car will work as a replacement for the lock cylinder and lever in the 3rd gen?
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Old Oct 25, 2015 | 11:54 PM
  #7  
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From: Clark NJ
Car: 1988 Pontiac Transam GTA Notchback
Engine: 2003 Chevy 5.3 Vortec (325 cu)
Transmission: 4L60E
Axle/Gears: 3.27
Re: 4thgen ignition lock cylinder swap?

It should. Ignition locks did not change in firebirds from 89-2002

As far as door locks, I'm not sure, but can't see why not.
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Old Oct 26, 2015 | 07:58 AM
  #8  
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From: Darien IL
Car: 87 IROC
Engine: LT1
Transmission: T56
Axle/Gears: LS1 10bolt w/ 3.73
Re: 4thgen ignition lock cylinder swap?

great, thanks
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