Speedmaster vs Edelbrock air gap intakes
I agree, the better the heads and bigger the cam, the more the edelbrock would be favored. I am curious though in mild street builds, per say .500 lift, what the difference would be. Interesting point about the smaller runners actually helping, lets say a stock engine.
Well the smaller runners would have a higher velocity. How far that works in your favor I can’t say. I myself never recommend the chink knock off’s.
The mention of how well it would do with a .500 lift cam is not exactly a fair one since I have seen cams like the MP 292/.508 that has the duration @050 at 248* and I have a Crane Hyd with 236*s @050 and .497 lift. I can find cams with greater and lesser duration and still have around that .500 lift.
The intakes have slightly different characteristics even though the look the same, the small differences of “How well they feed the engine” is another story. Remember the cylinder head can be hurt in how well it flows via the intakes ability, or lack of it.
Since the cams duration dictates to some degree the engines rpm range & the cylinder head depending on how well that flows air and fuel can expand on the amount of power and its range (cams and engines power) to some extent, the big trick with low lift cams (generally considered under .500 lift) is in the valve job. (It really is more complicated than this)
In short, testing the two intakes is a great idea, something I used to do on the street quite often in decades past. A dyno would be awesome, (watch out Rich Holdner!) but a drag track would do well also.
The test, should ones wallet and Curiosity be willing, compare 2 or 3 different cams, if you could keep the lift as close as possible to each other. A spread like,
a cam @ 218@050, (another @236@050) and @ 255*’s.
The difference cam durations would test how well each intake performs in higher and higher rpm bands under the same/similar lift at the valve.
2 or 3 different cams (I guess 2 would really do) would be cheaper than a set of well ported heads….. and a lot of fun.
Working with a stock engine, actual driving parameters and style come into play. I know very docile everyday drivers and pretty quick bracket racing cars with a mere .500 lift.
Are we talking about the drag truck?
