Reference Details
- Common issue
- A regular engine with R-series hardware or a later Paxton installation represented as factory R1 or R2
- Confidence
- documented
- Correct value
- Date-coded P standard 289, JT R1, or JTS R2 with configuration-correct internals, induction, supercharger, cooling, exhaust, and dates
- Where to check
- Engine stamp, castings, carburetor tag, intake, supercharger and drive, cooling, exhaust, dates, and production order