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Einari
06-03-2020, 04:29 PM
My project, 1989 gmc sierra 454 engine swap with 4l80e.
1project2many
06-04-2020, 02:30 PM
Welcome. Are you installing a TBI or PFI version of the 454?
Einari
06-05-2020, 05:45 PM
This time i think i choose easy way, holley sniper and hyper spark. I thin wrong because i still have stock transmission controller and no idea how transmission work with sniper
1project2many
06-06-2020, 03:43 AM
Sniper won't talk with stock transmission controller. The transmission controller needs to know the engine is running in order to control the transmission.