Some Differences between 95's and 90'/91's

[Dynomite]

Some differences in the 95' compared to the 90'/91' include:

1. EGR installed from Plenum to passenger side exhaust (SW has that connection on exhaust).
2. Drivers Side Exhaust connection to the Headers.
3. Only one Throttle Cable.
4. Security....Key Fob in Pocket will automatically Lock Doors as you move away from ZR-1.
5. Security....Key Fob in Pocket will automatically Open Doors as you approach ZR-1.
6. Radiator Plastic Drain Valve (still have not figured out how it functions).
7. Seat Control Selector (Drivers or Passenger Seat) on passenger side of console and Seat Control on Drivers Side of Console.
8. Jack is Stored in bottom of Storage behind Passenger Seat.
9. No Storage Area behind Drivers Seat.
10. No Glove Box.
11. Climate Control Trim Redesigned.
12. Gauges have changes in Appearance.
13. Jack Handle stored behind Drivers Seat.
14. Blue Label Transmission (albeit I have a Blue Label Transmission installed in my 91').
15. Seats are Re-Designed.
16. ALDL Plug is different.
17. Valley Drain under Starter is much larger on 95' and the tube between Bell Housing and oil pan is eliminated.
18. Injector Housings are different having the primary and secondary injector ports the same size (the same "O" ring).
19. The Primary and Secondary Injectors all take the same "O" ring but have a different colored band (white and blue).
20. On the 95' there exists a vacuum line and electrical on a separate module connected in front of the DIS along with the three electrical connectors connected to the Front of the DIS.
21. There is a filter on the Vacuum Solenoid of the 95' (Part #: 10159525).
22. Doors are redesigned and have small storage just below door release.
23. No Passenger Side Hatch Release at rear of Passenger Door.
24. The 95' Comes from GM with R134 AC System.
25. Improvements in NVH.
26. Door Panels Design Changes.
27. Crash Through Shifter.
28. Door Storage Pods.
29. No Hatch Release on Rear of Passenger Door.
30. FX3 Shocks Ride Selection Top Cam changed.
31. Windshield Radar Opening.
32. Wiper Blades.
33. Master Cylinder.
34. Selectable Data on SPEEDO LED.
35. Hood Emblems.
36. Top Wrench.
37. ABS.
38. Door Jam Locker (Silver alignment pin).
39. Fuse Blocks are Relocated in front and behind the battery.

1995 Plenum Restored



1995 LT5 SPECIFIC TOP END REBUILD TRICKS
A 1995 Top End was rebuilt and best tricks linked here
Post 230 - Plenum, Alternator, Secondary Vacuum System, Coils, Starter Removed
Post 231 - Clean Up of Valley and Removal Of Crankcase Cover (gasket replaced)
Post 232 - Installation of Rebuilt Starter
Post 233 - Installation of Coils and New Spark Plug Wires
Post 234 - Installation of New Secondary Vacuum System hoses
Post 235 - Installation of Reconditioned Injectors with New "O" Rings
Post 236 - Installation/Relocation of Plug Wires and New Spark Plugs
Post 237 - Blocking TB Coolant
Post 238 - Reconditioning and Installation of Plenum with SS Allen Head Bolts
Post 239 - Addition of Billet Aluminum Power Steering, Water Pump, Belt Tensioner Pulleys
Post 240 - Reconditioned 1995 Engine with New Fluids all around including Differential Drain Installed





Last UPDATE of post 1 Feb, 2016

[WVZR-1]

#6 - GM 3056858 and best I recall it's never gone through any production design changes. A change in design would have changed the part #.

GOOGLE - Amazon have great images.

That plenum is "restored" - I'd say not but ......

[WARP TEN]

There are also a lot of smaller, less noticeable improvements in NVH that improve the ride quality. Pieces of foam and/or Velcro like-material in a number of places. --Bob

[ZZZZZR1]

Door panels are a huge difference.

The earlier panels are more secure / durable and better made.

The later ones are flimsy and not as sturdy... (I'm being kind here!)



David

[Dynomite]

Originally Posted by WVZR-1

#6 - GM 3056858 and best I recall it's never gone through any production design changes. A change in design would have changed the part #.

GOOGLE - Amazon have great images.

That plenum is "restored" - I'd say not but ......

Well.......20 out of 21 observations is not bad

"On the "Restored".........I have "Restored" 6 Plenums. One of those is Powder Coated. All of those have the same Unconventional Color Combination. Three of those had the original Powder Coating chips and flaking. In the Restoration I did NOT remove the original Powder Coat but DID remove the flaking original powder coat and did dress up the chips and flaking areas by sanding.

Five of those are Painted with Rustoleum High Heat which after considerable use none of those has changed color or the paint deteriorating in any way. An advantage to my methods is that the Painting is very easy to touch up in case of stains or damage after the fact. All of the Plenums have the Billet Aluminum TB Coolant Cover Installed (LT5).

And I might add.....only one of those has the TB Coolant Blocked and associated rubber hoses removed from the Plenum. The other five Plenums are associated with TB being Blocked at the Injector Housing with New Hoses associated with the original TB Coolant installed WITHOUT Hose Clamps just for looks.

Keep the Differences between model year observations coming....very informative

[Jagdpanzer]

#17, you should also have a larger drain tube in the bellhousing. 94s do

[Dynomite]

Originally Posted by Jagdpanzer

#17, you should also have a larger drain tube in the bellhousing. 94s do

I did not see any tube on 95'.......maybe tube is a press fit and got dislodged. I think there is a drain tube into the Bell Housing and then through the lower plate draining between that plate and Oil Pan. But.....I am not sure...will look in a minute.

[USAFPILOT]

Crash through shifter was on the 95. It is the only feature on the 95 I wish my 94 had. Though there are others.

[Jagdpanzer]

Originally Posted by Dynomite

I did not see any tube on 95'.......maybe tube is a press fit and got dislodged. I think there is a drain tube into the Bell Housing and then through the lower plate draining between that plate and Oil Pan. But.....I am not sure...will look in a minute.

The drain tube actually runs between the back of the block/oil pan and in front of the flywheel.

[Jagdpanzer]

Originally Posted by USAFPILOT

Crash through shifter was on the 95. It is the only feature on the 95 I wish my 94 had. Though there are others.

Go with a Hurst shifter or BB moded stocker