we are putting a 305 v8 in a 1983 that has a v6 in it now will this dash cluster work and what is the yellow box on the back of the tack

thanks

 

Welcome to TGO, donam.

I'd suggest a V8 cluster. The yellow box is the VSS.

JamesC

 

thanks for the answer, i did see a thread that explained the vss

 

what does the vss do?...

will it work on the 83 camaro?...

i tired putting it on my 83 camaro and the rpms jump all around...

 

Here's the way it works from my 85 GM Shop Manual:

"This is the device that will supply the vehicle speed input to the controller. The optic head portion of the VSS is located in the speedometer frame. A reflective blade is attached to the speedometer cable/head assembly. The reflective blade spins like a propeller, with its blades passing through a light beam from a L.E.D. in the optic head. As each bade enters the L.E.D. light beam, light is reflected back to a photocell in the optic head causing a low power speed signal to be sent to a buffer for amplification and signal conditioning. This amplified signal is then sent to the controller."

In short, the VSS sends a signal to the ECM and to the cruise control module on your car (since your speedo is cable driven). It does not affect how the speedo or trip odometer reads.

Your 83 should have one.

To the OP: You may find the link below interesting:

https://www.thirdgen.org/forums/inte...atability.html

JamesC