Tuning 4.63 rear axle ratio 730 ecm with TPI

**stew86MCSS396** · 03-25-2022

I*think*an accurate functioning speedometer is what matters. This may/may not have any relevance...
http://www.gearhead-efi.com/Fuel-Inj...ll=1#post48816

**EDZIP** · 03-25-2022

Originally Posted by stew86MCSS396

I*think*an accurate functioning speedometer is what matters. This may/may not have any relevance...
http://www.gearhead-efi.com/Fuel-Inj...ll=1#post48816

Took care of that mod years ago..Thanks

**stew86MCSS396** · 03-26-2022

Out of curiosity, NV4500 uses...40 tooth reluctor??? You running the speedo with a DRAC??? Just trying to figure out what it entails running similar setup but probably 4L60E w 40 tooth. thanx in advance!!!

**EDZIP** · 03-26-2022

Originally Posted by stew86MCSS396

Out of curiosity, NV4500 uses...40 tooth reluctor??? You running the speedo with a DRAC??? Just trying to figure out what it entails running similar setup but probably 4L60E w 40 tooth. thanx in advance!!!

To tell you the truth I can't remember the reluctor tooth count, but the 94 Chevy cab is from a 2500 and on the 3500HD chassis. Yes running the speedo with a DIP equipped DRAC. Have extra DIP switches if you need any.