Depends on the air you are moving, ie the cylinder head. The reason most "old school" Mopars grinds are short, is because the heads SUCK, especially on the exhaust side. Later model and more modern high flowing heads with really good exhaust flow will want a wider LSA. Thinking wider LSAs are for power adder motors and kill bottom end is frankly 70s thinking.
I wouldn't put a whole lot of stock in what EMC guys do either. That competition and they way they test those motors has little to do with "real world" performance. What works great on the dyno for that contest, MANY times is not what would make a car go down the track the quickest
Gotta disagree with you regards wide cams not killing bottom end in N/A deals.
I had a well scienced out combo that ran mid 10's at the time with a 107 LSA cam that was Specced by who I consider to be a sharp guy on cams.
Another such " guru" who was familiar with my combo suggested running a cam of his choosing. It was on a 112. Try as I might, the car was numb out of the gate with the 112, It was off so much that it couldn't get closer that a full tenth away from the 107 deal.
Same everything except cams. Nothing different. 3400 pound smallblck without a ton of compression( under 12 to 1).
I knew( and I am not very smart) that in a typical bracket deal like I had without a lot of compression, wide kills.The wide deal just bled off squeeze.
In fairness to the 112, it ran almost the same mph, that was real close. Big difference in 60 foot though, car just couldn't overcome that and the first 1/3 of the track to catch up to the narrower cam.
