/wwwthreads_images/icons/tongue.gif Here is my personal opinion on the AMC V8 family, and it's compatability with speed/performance upgrades: First off, there is the problem (and I'm talking LONG TERM here) of availability; these motors HAVE to get scarce eventually; unlike say a sb Chevy. Then, there are some built-in deficiencies that can only be overcome by intense, internal modifications; like the oiling system which I swear was designed by a five-year old one day when he/she was staying with her daddy at work at the AMC desigh works; it is really pathetic. That, together with some shaky castings and all cast components, makes the AMC V8 engine family one of those groups which does not GIVE you anything, you have to get in there and force it to do well. There are, in my opinion, just too many drawbacks right out of the box to justify doing a build-up.
When we got our CJ7, it had a fresh 304 in it; a well put-up engine, with a good cam and good internal upgrades. Our 304 was bolted to a TH400, which; it turned out; had a bad case. By the time we rebuilt the TH400 with a replacement case, the reality of the situation was that we had spent the dough to build a tranny specifically to stay with an engine we really did not have that much confidence in. Over and over, I find myself questioning the wisdom of that move, as opposed to puling everything out and going with a GM and the TH400 to our Quadra-Trac transfer case. It was just that we hated to toss this 304 when it was so fresh. Now don't get me wrong, I KNOW the limitations of the sb Chevys, and I am not really a Chevy man per se. I sometimes get weary of trying to make an engine out of them as well, with their Mickey Mouse lifter setup, but if you know what to do, they WILL go long term(my 350 in the 3/4 ton GMC has 275,000 on it), and parts ARE everywhere, along with the modern FI systems for that ever-elusive fuel mileage so uncommon to Jeeps. /wwwthreads_images/icons/crazy.gif
CJDave
I never believe any statistics unless my moonguys /wwwthreads_images/icons/crazy.gif/wwwthreads_images/icons/wink.gif made 'em up themselves.