Quote:
Originally Posted by Billy Nees
A few years ago (one of my "I'm bored" weekends) I started playing with desktop dyno just picking engine combos and restricting them. Now I know that isn't the real world but if you restrict the intake and the exhaust enough on almost any combo they all wind up making about the same HP.
It could be interesting (at least to me anyway) to get some Stockers or SSers together and put a restrictor plate under the carb and put on a collector with a 2" outlet, get them to the same weight and see how they run in relation to each other.
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I've read all this with some interest. Looking at the above, you're getting real close to what the circle track racers used to (maybe still) do. One of the local tracks around here, allowed to you to pretty much build the motor however you wanted it, as much cam and compression as you please. Here was the kicker, they limited everyone to a cast iron intake, a 500 cfm 2 barrel carbutetor and cast iron manifolds. As you can pretty much figure, everyone was running SBC's. They also mandated a specific size DOT tire, so everyone was equal, on paper.
Ever thought about revisiting the old Modified Production weight breaks? Or maybe Super Modified? Here again, I see alot of BB, SB chevy combinations, which still would be typical of S/SS. Mandate the carb/fi size. Holley makes a 450 cfm mechanical secondary carb. I like the collector restriction idea. I would say, don't allow any flycutting of the valve relief area of the piston, this would limit cam size. Someone that's smart (read that $$$$) would just build a set of pistons that would allow them to supplant this.
Some good ideas here. Limit the amount of air/fuel going in, the exhaust going out and keep everyone on 9" tires. Fitting the 6 and 4 cylinders, gonna take someone smart.