I have a '90 V6 (currently) w/ a 120mph Cluster. If I swap this out for a '90+ Trans Am/GTA 140mpg Cluster, would everything work properly? Would I need to re-calibrate anything? I am later on swapping in a 350, so, I would have the Tach issue out of the way. But, I'm just wondering if it would function properly w/ the current setup. I have a 730 ECM.

Thanks

 

The only problem would be the tach reading lower than actual untill the v8 goes in.

 

Thanks for the help!