Thread: What do you think of this kit?

Tweet

Don, World doesn't publish flow figures, so I can't Sim them. So, let's ease back on the wallet and use a set of Racing Head Service cast iron heads with 180cc intake runners....
http://www.summitracing.com/parts/CCA-35301-01/

And we'll pull back on the cam one notch to make a little more torque on the bottom and also to coordinate with the lift limit on these heads....
http://www.compcams.com/Cam_Specs/Ca...?csid=826&sb=0

RPM HP TQ
2000 128 336
2500 165 346
3000 215 376
3500 280 420
4000 346 454
4500 410 478
5000 466 489
5500 499 477
6000 518 454
6500 528 426
7000 520 390
7500 506 354
8000 475 312
Volumetric Efficiency 98.7% @5000
Max BMEP 212.7 @5000

I see that RHS fudges a little by using a 4.200" bore pipe to flow the heads, so you may want to figure back on the 'Sim numbers a little. But heck, even if you factor the numbers by .90, that's still 475 hp and 440 ft/lbs and that's certainly nothing to sneeze at. Just so you know, the TFS flow numbers were arrived at with a 4.030" bore pipe.