big bore kit for 420a

[mdost03]

Well, my friend went on the dyno with his RS-T and made 210 hp and 214 lb tq at 6 psi at the wheels. That already makes the same as a stock GS-T's hp at the crank. So, if you think about, yes I can beat a slightly modded GS-T. I have done it before.

I plan on rebuilding my engine with some forged pistons and rods and then get a few fuel upgrades and I will be boosting around 15 psi, which should equal around 300 whp. The 420a is a more modern design compared to the 4G63. Sure, a stock GS-T is going to make more power right away, but it doesn't take much on an RS or GS to make it right up there with it.