4.0L HO Jeep Engine Build
Man it sounds like you nailed it Joe. Always great when you exceed your expectations.
I was very concerned that that the cam would fall flat past 4k. Not so. :cheers: It might be the porting, Throttle body and manifold combining to stretch out the torque curve... Maybe, lol. I still wonder what it would've driven like with the
real 4.0L HO cam advanced 6 to 8 degrees.
I suppose a dyno test could be done with every little thing done one at a time including the quench I added, thinner ring pack, etc. I just don't have those resources though.
We both know that true performance and efficiency is gained as a system and that's how I tried to approach this build. In regards to this line of thinking, I feel that I left maybe 10hp on the table by not going with the Lunati cam, but I sure never expected the cam I got to spec out in the way it did either. It's like basing a build a on a factory HP 340 cam and getting a cam from the 360 they put in the little red wagon pickup.
Now I know though and hopefully this information will help those contemplating a build like this. I still have another block laying around and if i blow this one up, a stroker 4.6L will be in the works using the knowledge I gained from this build. Maybe I'll put a turbo on it too, lol. I have to wait until this thing hits 25 years old so I don't have to emmision test it.... :-D
One thing I will also add is that the distributor is sloppy by design (AMC). I understand why the later models of this engine used individual coil packs and I feel that with the correct computer, like a megasquirt, some single digit improvements could be made. If I went with a turbo, I feel that this mode of ignition would be mandatory as well as a better way of cam position sensing.
