alright. I expected the 4 valves per cylinder had something to do with it lol.
We talked to some supra guys about this. It is the complete package. The high nickel blocks make for a durable build. When building big hp these motors dont make any power under 6000 rpm. Then they spin them up to 9-10,000 prm. They put a 150 shot of nitrous to spool the turbo. They have a FZ1FE 4.5 liter motor the looks just like the GM 4200. I would say GM borrowed there design. The 4200 can be built to make power like the 2jz. It just takes a few more parts to make the block a little stronger. That cost a little more money and turns a few poeple away from the 4200.
