sowaidi

iTrader: (5)

Hi,
I've replaced my old T56 with a new T56 Magnum, only problem I'm facing is the speedo is off and cannot be adjusted with the tuning software. Is there something that I'm missing. It used to work perfect with the old T56.
FYI: Its on a 2004 Chevy Truck

Thanks

redbird555

iTrader: (14)

the speedo signal inside the trans are different. you need a dakota digital box to convert the signal to one that can be correctly calibrated to your truck theres a wrtieup on here if you search

jmm98LS1

iTrader: (28)

If you can find out how many teeth are on the magnum's reluctor ring, you can easily fix the speedometer in your tune without buying a converter box.

SSellers

Maybe it has the Ford reluctor in it? Here is a post from someone else who put a non-GM built one in and references some parts needed...
https://ls1tech.com/forums/manual-tr...02-camaro.html

themealonwheels

iTrader: (20)

That is correct, Ford signal... about 2/3 the actual speed if I recall correctly. Glad to see my thread came in handy!

I really need to get under there and document the wiring for the Dakota signal converter, because every now and then I get a PM asking about wiring... It was so simple I didn't document it, but now I regret it!

But yeah, get the box and adjust for gear changes/tire size changes on the fly