Thread: cylinder heads and superchargers

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Playin' with the DynoSim, here's the best I could do using your limit of 9 psi.
Ford 408 Windsor
AFR185/73 2.02/1.60
9.0:1 SCR
1100 CFM (limit of my software) My calculations say you will need 1400 CFM @ 9 psi @ 7500 rpm's @ sea level.
Paxton Novi 2000 @ 9psi
90% efficiency intercooler
CompCams 35-770-8 Solid Street Roller
274/280/, 236/242, 0.602"/0.608", 110. Timing specs @ 0.050" are:12/44/55/7
RPM HP TQ
2000 223 585
2500 299 629
3000 376 659
3500 457 686
4000 530 696
4500 600 700
5000 658 692
5500 692 661
6000 723 633
6500 718 580
7000 691 518
7500 627 439

I was playin with it like I said and when I first used the Novi 2000, the torque jumped up to 850 @ 2000. I said wow. Then when I played with it and changed some things around, I never could get that power back. I don't know if there is a glitch in the software or what. I also checked the Paxton SN2000, Vortech V1-A, V1-B, V2-S, V3-J, V3-R, V3-S and V4-T. Novi 2000 showed the best numbers. Anyway, this is the optimum I could get with changing things around within reason. Intercooler efficiencies ran between 10% and 150%, so I kept dialing in intercooler until I got 700 ft./lbs of torque after I got the cam zeroed in.

Just read your other PM about the 10.5:1 SCR, so went back and plugged that in. Made good power with the same cam, but I figured more cam would show up a little better with the increased SCR. Changed to Comp 35-771-8 and got 800 hp @ 6500 and 735 ft/lbs @ 5000 with 9 lbs of boost. Cam specs 280/286, 242/248, 0.608"/0.614", 110. Timing specs @ 0.050" are: 15/47/58/10. Peak volumetric efficiency with this combo is 136.6% @ 6000 and peak BMEP is 271.5 @ 5000. Effective static compression ratio with 10.5 SCR and 9 lbs of boost will be 16.9:1. Effective with 9.0:1 and 9 lbs will be 14.5:1.

Novi 2000 specs for this test are:
Island Flow- 775.0 CFM
Impeller Speed- 41000 rpm's
Peak Efficiency- 70%
Belt Ratio- 1.0
Pressure Ratio- 2.20
Internal Ratio- 3.54

Aw heck, I'll just go ahead and chart out the whole thing......
RPM HP TQ VE BMEP
2000 226 592 93 218
2500 305 640 103 236
3000 383 671 112 247
3500 471 706 120 260
4000 551 724 126 267
4500 628 733 130 270
5000 700 735 134 271
5500 745 711 135 262
6000 784 686 136 253
6500 800 647 135 238
7000 796 598 133 220
7500 747 523 126 193
8000 683 449 119 165