55-60hp with the pully and suitable maps on the engine and gearbox.
Good answer Rob, I see this done quite a bit on Jags, it's strange they respond so well.Under-drive pulley's are also commonly fitted to superchargers as an aftermarket modification. The smaller pulley will make the supercharger spin faster, and thus create most boost. I've done this numerous times on the 4.2 v8 s/c jag engines.
Thread starter | Title | Forum | Replies | Date |
---|---|---|---|---|
Q | Underdrive Pulleys | Engine questions | 10 | |
Vernier pulleys | Engine questions | 0 | ||
What are Vernier Camshaft Timing Pulleys | Engine questions | 3 |