IF we were to stage 5 turbo our cars, and do all other mods possible, how far do you think we could get HP wise? torque wise?

there is no MAX yet for our car. We're still rising and still finding new ways to push the reinforce and push the engine.

Sure, compared to 4g63's, our numbers our lower, but the 420a is relatively new to being modded. 4g63's have at least a 5 year head start.

If you look at HRC's website, bill hahn's car is stage 5 and is 500 horsepower, and still rising, especially now that they are testing the s25g. With goals to have a 10 second car.

Armond has a daily driver that's 400 hp and breaks axles weekly. :9

Our limit on pump gas is about 20 psi, which Murix is running daily, but that's with a fully rebuilt engine and lots of timing retard and perfect tuning.

brett raus has about 650
not sure about the likes of
dave bushcars talon
john shepards ride
gary marsh and others

and that is why i love this engine

evan, i think he meant max horsepowers for 420a's. =)

unless buschar is riding a 420a and he's not telling us. :9

If you have the money to burn you can have as much hp that your 420a desires. But why have a 500+hp 420a this car belongs on the street. If you want a full fleged race car then go for it, but me i think the rs/gs belongs on the street as a sleeper. OH and dont get the name wrong i am running a HRC stage 3 fully balanced and blueprinted 420a and this makes for a very good sleeper.