jwd Jim We have tricks for just about any motor I can think of except for the 409, 348, 260, 290, 343, 340 buick, and a couple of other motors plus flatheads. I did think long and hard about putting a GM motor in the cobra, there where no stock looking blocks like the 427 ZL1 motor with a 490 lb weight and this time. The shelby block came along at 120 lbs and the rest was history with building this motor. It's simple, IMO the SBC and BBC have alot better oiling system than the FE block. The sideoiler is better than the center or top oiler. Your rod bearings in a SBC are as wide or a little wider than a FE rod bearing. They also carry about 200 grams less.
The stroker 482 kit I have in the motor with BBC rods is the same weight or a little lighter than my 428 crank and rods with a 4.25 against a 3.98 stroke of the crank. I have spent the better part of 12 years talking at any one with FE motor building background. I have gotten some good info and some real bad info.
I pass along the good info and what I think will help any person on this forum with extending the life of an FE motor. You are right about different animals, FE is not like any GM motor ever producted. There are alot of tricks for the BBC and SBC and now the LS1,2,6,and soon to be 9 motor. Piston sprayers, just like a diesel in the 9 motor and a bigger oilpump and better system than ever. We are still working with 40+ year old stuff. I wish a FE motor was 5.0" on bore centers for alot better heads than what we run today.
As you said this is just my opinion and what has and hasn't worked for me. I am not a pro builder or machinist, just a student.
Rick Lake