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View Full Version : 1227730 ECU. $1F to $8D mask ID?



0midnight5
11-17-2017, 10:26 PM
I have an 85 corvette with a 1227730 ecu in it and a $1F Mask I.D. is it possible to keep the 1227730 ecu and upgrade to a $8D Mask I.D? the 8d has allot more support and seems to be a better all around tune. I figure I would have to get a moates G2 adapter for a larger chip but is that all I need to do. is this even possible?

dave w
11-18-2017, 05:27 PM
There are several technical details to figure out first when upgrading the 1985 Corvette to $8D.

The 1985 Corvette should have ECU 1226870: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?364-1226870-ECM-Information-1F

The 1227730 ECU was first used in 1990: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?394-1227727-1227730-ECM-Information-8D

With good wiring skills and a "no holds bared WILL to make it happen", the 1985 Corvette 1226870 can be converted to the 1227730. Upgrading the 1985 Corvette computer IS NOT a "Simple Plug-n-Play" project.

dave w

stew86MCSS396
11-19-2017, 08:07 AM
I don't understand what is being asked but refer to the following link and this may help...
https://www.eecis.udel.edu/~davis/z28/ecm_swap/
https://www.eecis.udel.edu/~davis/z28/ecm_swap_730/