If your cam is that big, I think you will make more.
But That's not necessarily a good thing, cuz the 280 cam will want more TC and gears.Notice his torque peak was 4700....... And it was done at 5400. There is something wrong with that picture. The split is messed up.There may be a typographical error there, or something in the combo is off. Or both.My car has a 276/286/110 and it is no where near as nasty sounding;but at 93 mph in the 1/8th, it is no slouch.
>I think your losing sight of your stated goal.
>Look, you said so yourself; your current combo is a bit doughy on the bottom.Didn't you say doughy? And she won't won't even spin one tire. And here you are porting your heads for a bigger punch in the midrange and a top-end rush;not helping the bottom end one tiny bit. A bit of compression and the 2500TC is not gonna cure that. And the 3.21s are Zero help at a standstill.So if you have become enamored to the sound of that cam you will in all likelihood need to make some changes.
>With your combo, you should be thinking of a cam at least two,maybe three sizes smaller than that 280.Or you should be prepared to spend a buncha more money. Your combo wants a cam in the neighborhood of 220*@050, fully two sizes smaller than the one in the video. And a220 is about 262/266 advertised. A 220*cam will not idle like the one in the video. Once the tune is in, you will barely hear it. But a 220* with a 2500TC can fry a pair of 255s(27"), to nearly the top of first gear no problem; which with 3.21s and a 2.74 low gear is about 57mph@6500 with 27" tires. The 280 cam will just fry them harder,after it gets going, cuz the same 2500TC will make it soft on take off.
>Imagine two identical cars like yours; the same in every way, except one with a 280 cam and the other with a 262ish cam. Imagine they have traction aiders that limit the tire spin to a couple of car lengths. Imagine they both torque peak at about the same relative number, namely 1.12 pounds-feet per cid or 403ftlbs, cuz by and large that is what you are building, cuz that's about what a 360 can do, with these support works.
-Ok now the 262 cam should torque peak around 3500, and the 280 might peak 500 rpm higher at say 4000.The 262 cam will thus torque peak at 30.5 mph with those 3.21s; while the 280 doesn't peak until 34.9mph.
-What that means is that when both cars take off, the smaller-cammed engine (which will have more torque at 2500 than the 280) should pull away from the bigger to somewhere between 30.5 and 34.9 mph. From that point on the bigger-cammed engine should pull away.
-What that also means is that at any roadspeed below 30.5mph, the smaller-cammed engine should out-pull the larger.
-This is a rather simplistic comparison, cuz I handicapped them both, to make it easy to understand. In real life, the 280 cam would have a TC about 500 rpm higher, to make up for the doughy bottom end, and the 280 cam would have more rear gear too. And of course the 280* would waste the 262 right from the get-go.
>So if you have been paying attention, you can see that the 280* cam, requires more stall and more gear to stay even with the 262 up to about 30 mph. In the mean time the 262 with 3.21s can be tuned for probably 4 mpg or more, over the 280 with it's 3.55s;at 62 mph.
Pick your poison.
>I can tell you that I have run the 292/292/108, a 270/276/110, and now a 276/286/110, all in the same engine and chassis. The 292 liked 4.30s, the 276 likes 3.55s, and the 270 didn't care.
-The 292 sucked so much gas I didn't even bother to measure it.Even with 3.55s, it was bad,turning 62=2735, Try to imagine what it was like with 4.30s, where 62=3310! I ran Scr of 11.3 with this cam.
-The 270 was incredibly easy on gas, because I ran it with a double overdrive, that turned 62mph=1560
-The 276 is harder on gas by a lot, partly because it no longer has the double overdrive, now cruising at 62=2133rpm
-The 270 cam was able to get 32mpgUS (point to point),with an overdrive ratio that brought the final-drive down to about 2.00;allbeit with a Scr of 10.9 and a manual trans.
>IMO, this is the kindof thing you should be aiming for. It's just too bad things are so expensive to get out there. In any case, we don't know what cam is in there yet, so this is all just chit-chat.