My combo will be a 10.8:1 464 with ported stage 2 heads, SP1, headers, 3500-4000 stall converter, and 4.10 gears. Since the heads are going to flow pretty well, I was thinking I could get away with a smaller cam and still make good power. Would it be a bad idea to go with a cam similar to the TA 288-96h? This is for a street/strip car. If I were to run it straight up (intake on 116 degree center) the dynamic compression would be 7.48:1, which would seem to work well on pump gas. I like the idea of a somewhat mellower idle, but I don't want to give up a lot of power or build so much torque that I can't hook the car up. Should I just go with the bigger cam and be done with it? I will post some desktop dyno sims to show the different cams I'm considering.
you have a cobo that will take advantage of a cam with up to around 240 intake duration, besides that its what idle you want to live with. i would guess that at the track you would only see maybe a tenth from the 288 to the 296. i would go with the 413. it has a nice lope but wont shake the paint off. just my 2 cents
Steve, We have made 556 HP/ 575 TQ with the 288-92H cam, which is 230/234 on a 110 LC, with headers and a single plane intake, with the STG 1 alum head. Keep the lobe center tight, and don't go wild with duration. The motor will like it. And so will you.. real nice driver.. Check it out.. http://www.trishieldperf.com/level_1a_engine.htm You are correct in your assumption that better heads requires less cam to make HP. To me, that is at least 1/2 the reason to upgrade to aluminum.. you can make the same power as a much wilder iron headed, bigger cammed motor, and still have a nice driver, with the smaller alum head cam. The heads on our motors flow right around 315 cfm on the intake. Everything so far has been our upgraded sets. The 2A motor makes right at 600 HP, with a 238* duration cam. Make sure you have the bottom end for that HP, if you go with a bigger cam, and make sure your heads are as good as they can be, with reasonable dollars spent. I think this set of STG 1 Alums went 318 cfm, and a touch higher in the lower numbers, with our 2.200 intake in it. Gotta run, got a motor to load up for delivery.. JW
Thanks for the advice, Jim. I would like to make as much power as possible, but I agree with you that the main draw for the aluminum heads is that you can build a motor that is strong AND streetable. Which cam would you choose out of TA's lineup?
