TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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After a lot of computer testing with DYNO SIM this looks to be the best cam for my planned buildup. Is anyone running this cam? I ask because Crane says it isn't computer compatible. But looking at the specs it should work with some computer tuning.
Thanks!
Brand: Crane Cams
Product Line: Crane PowerMax Camshafts
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 2,500-6,000 RPM
Intake Duration at 050 inch Lift: 222
Exhaust Duration at 050 inch Lift: 230
Duration at 050 inch Lift: 222 int./230 exh.
Advertised Intake Duration: 284
Advertised Exhaust Duration: 292
Advertised Duration: 284 int./292 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.509 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.528 in.
Valve Lift with Factory Rocker Arm Ratio: 0.509 int./0.528 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Computer Controlled Compatible: No
Grind Number: HR-284-2S-12 IG
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__________________ 389 CID Vortec TPI Engine, 428 HP, 507 TQ. Wheeler Vortec Heads, KB, Comp Cams, Crane, Eagle, SLP, Accel, Fluidamper, Vigilante, TCI, Spohn, Lakewood, Hedman, Flowmaster, Random Technologies, Be-Cool, Granatelli, Goodyear, Bosch, SDPC Intake, Texas Speed, Custom Chip and Ford Motorsport (30 lb Fuel Injectors).
11.894@114.3 mph.
Sacrificed to the God of Speed: (2) 700R4's, 3 TC's, 3 sets u-joints, one driveshaft, one camshaft, one bent rod, 3 blown head gaskets and two blown motors.
Last edited by 89Nighthawk; 03-28-2007 at 01:23 PM.
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IMHO that is a lazy cam. It has slow ramp rates. I think the Comp Cams XFI280 is a much better cam in that duration range if your heads can take the added lift.
It has more 8 degrees more duration at .050" and about the same or less seat to seat. Crane and Comp Cams measure the seat to seat differently so that is not apples to apples.
I've revised my thoughts, now I think about 450hp. Probably less through long runners. And I'm not trying to be a di*k either, honestly.
I appreciate your thoughts but I really did build a Ford 400 that made 608HP at 6500 RPM with a Sig Erson cam with the same duration and just slightly more lift .517/.517. It was a single pattern cam not a dual pattern cam, which theoretically should make the Crane a better cam. DYNO SIM says I can crack close to 550 with a HSR. So, probably I can get to 500 without question and the rest is debatable.
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Quote:
Originally Posted by 1989GTATransAm
IMHO that is a lazy cam. It has slow ramp rates. I think the Comp Cams XFI280 is a much better cam in that duration range if your heads can take the added lift.
It has more 8 degrees more duration at .050" and about the same or less seat to seat. Crane and Comp Cams measure the seat to seat differently so that is not apples to apples.
I'll look at that cam and see how it comes out. One reason I like the Crane Cam is because it's got a bit of a nasty idle to it. I want a cam that will talk, that comes from my drag racing days, big heads, big cam, big carb! Nothing like a loping cam to announce your arrival.
__________________ 389 CID Vortec TPI Engine, 428 HP, 507 TQ. Wheeler Vortec Heads, KB, Comp Cams, Crane, Eagle, SLP, Accel, Fluidamper, Vigilante, TCI, Spohn, Lakewood, Hedman, Flowmaster, Random Technologies, Be-Cool, Granatelli, Goodyear, Bosch, SDPC Intake, Texas Speed, Custom Chip and Ford Motorsport (30 lb Fuel Injectors).
11.894@114.3 mph.
Sacrificed to the God of Speed: (2) 700R4's, 3 TC's, 3 sets u-joints, one driveshaft, one camshaft, one bent rod, 3 blown head gaskets and two blown motors.
Last edited by 89Nighthawk; 03-30-2007 at 02:18 AM.
Reason: Automerged Doublepost
Yeah, the HSR will help. Didn't see that in your post or sig (still don't). But, still not much cam for the power you're aiming for, and the lazy advertised to .050" ratio will not be computer friendly, until you dig into the prom a bit. Dual pattern typically is for exhaust flow problems. Do you have any restrictions (like possibly the exhuast port on those heads)?
