- Joined
- Nov 20, 2021
- Messages
- 227
- Points
- 101
- City
- Wilmington, NC
- Vehicle Year
- 1990
- Engine
- 4.0L
- Transmission
- Manual
- Total Lift
- 4” suspension
- Tire Size
- 265/75/r16
- My credo
- built her in a storage unit
i have a 1999 ohv 4.0 but it will be going to a 1990 ranger with all 1990-94ish wiring, which of these plugs should i use and why and what are the differences? apparently sp500 is meant for the later ohv and sp486 is for the older ones the reach of them is both the same, .679 i believe.
