It sounds pretty cool. First, DO NOT bore a 4.0 more than .040. There isn't enough room, and the marginal displacement difference isn't worth re-sleeving the cylinders. Second, using the newer style d.i.s. pack on an older block isn't a good idea. The block castings are different. There isn't any mounting holes for the d.i.s. pack in the older block and unless you work for Chrysler, you will never get a custom flash for the newer JTEC controller. Third, I wouldn't build it for horses, but torque. The horses will come with the extra displacement for free, and torque is what you want for low end grunt. Next, I wouldn't get too radical with the cam. I have used both the Mopar stage 2 and stage 3 cams with matching springs, and the stage 2 is much better! Using a cam profile that has a lot of overlap won't have any manifold vacuum at idle. This really messes up the computers ability to correct for mixtures at idle. Remember most of the fuel delivery is determined by the m.a.p. sensor, and with no vacuum at idle from a wild cam will shoot your low end torque all to hell. If you really wanted to improve the stroker using a 4.2 crank, have the quench area set correctly. This will allow a higher compression ratio without the detination. This is basically done by decking the block a whole bunch, and using custom low compression pistons. Last, I would re-think using two throttle plates for the much easier 5.2/5.9 Magnum throttle plates. These will allow more air, and still have i.a.c. , t.p.s. , and m.a.p. sensors that are compatable with the 4.0's harness. If you really wanted to get fancy and pick up a bunch of displacement, have the crank offset ground down to a SBC's rod journal, and use Chevy rods and pistons!
