So, lets see if I understand this right;
Say I take my 360/400hp to the track and it turns a certain mph. Then I go home, put a cam in it 2 sizes smaller. Then go back to the track, and turn the exact same mph, but now I can rev it 400 rpm lower?Or did I misread that.
Or maybe you are saying; pick a cam any cam, and stick it in a teener, go to the track, get a trapspeed.Go home swap that cam into a 360 all other things remaining equal, like I said, and 360 will now turn same trapspeed as teener, but at a lower rpm. Or did I misread that?
Or maybe the 360 in a 6000 pound truck outfitted exactly like a teener, will be the same sucked out as that teener, in that exact same truck,cuz its only 42 cubes different.
Or did I misread that?
So then at 1 hp per cid your teener is making 318 hp, and the 360 is making 360 hp. Its only 42 cubes and only 42 hp. Even if they both used the exact same cam,and all other things being equal;Stick them in identical chassis with identical gears, and ...... will they turn identical trapspeeds?
Or did I misread that?
I'm not sure what I read, but I'm confused.
Of course you have to spin the smaller engines faster, to get equivalent power. That's how the physics work, with all other things being equal. But to unlock those rpm, the cam has to keep pace. And since a particular trapspeed requires a particular rear gear,say to trap at 106 requires 4.56s or so and each of these engines, all producing 400hp,are stuck with this same gear, as I said;all other things being equal,each is stuck with the same starter gear.This is gonna be a bit of a problem for the teener, if the exact same stall is used in each engine.
But the whole gist of the post was towards the streeter, where small cams are the norm. Streeters almost shouldn't care about absolute power numbers.Those are just a function of rpm. Streeters should be concentrating on putting the torque exactly where it needs to be MPH-wise,for what they want to do, cuz streeters are pretty much a one-gear deal, and then optimizing their particular combo to show the best there.Then if gearing and stall are non-conducive to cruising the hiway, or to getting great fuel economy, which they might also be interested in,then the engine size needs to be up-sized so that the stall or gear can be reduced, and still end up with the same torque to the rear axles.
Look, I like to go hammer down at 35 mph and light up the 295s. In second gear with 3.55s, this is 2964rpm for me. Lets say I had just barely enough power to accomplish this. Just barely. Now pretend it was possible to reduce my bore size, without changing the Scr, to teener size. Now lets see what happens with 42 cubic inches less. Its only 42 cubes.