I am rebuilding a 460 for my pickup and i was wondering if anybody with a good DD and the knowledge to use it could run me some numbers.

It is a standard crank, with Police Interceptor (but otherwise OEM) rods, Speed Demon 750, Weiand Stealth dual plane,Dove-c (76cc) heads, 3 angle valve job, Crane Hydraulic Roller Cam (P/N:359351), 1.73:1 roller rockers, hydraulic roller lifters, 10.5 CR flat top cylinders. Heads are port matched (intake). I will/will not remove exhaust bump depending on dyno results. Exhausts are double y headers, 1 3/4 with 3" collector. All coupled to a 2500stall converter.

Any efforts will be appreciated.

PS. im about 1100 ft above sea level, any chances that knocking will happen with regular gas.

 

I'll run the #'s for you a little later on a EA3 Analylizer...I'd like the timing event's on the cam...And yes, even with out running the #'s get rid of the smog bumps!! All fords are Pee Poor on the Exhaust side!!!

Russ

 

Sorry but it was late last night. Cam specs are at this location, i don't know what all you need.

http://www.cranecams.com/index.php?s...51&lvl=2&prt=5

also I forgot to mention that it is punched 30 over.

Hope this helps

 

Don't bother with anything until you get that pesky exhaust bump taken care of. It's cheap, it's easy, and makes a heck of a difference in your power potential.

The cam you listed is grind number 345-2S-14, the hottest hydraulic roller Crane makes for the 429/460. It's too much cam for your mostly stock setup. Way, way, WAY too much cam. I can't stress this enough. You're heads won't support the airflow needs of this cam, and your mostly stock block and reciprocating assembly certainly won't take the RPM needed to get into this cam's power range.

Using your setup above, this cam makes pathetic power numbers due to the horrible mismatch. 536 HP @6000 RPM and 534 lb-ft @4500. That, and there are some really funky low-rpm airflow dynamics. It would sound killer good, but it would run like crap - poor throttle response, limited low-end power.

If you want to stay with a roller, look at the baby roller - the 311-2S-12. It's much more suited to your setup.

RPM HP / Torque
2000 214 / 561
2500 271 / 569
3000 329 / 576
3500 390 / 585
4000 445 / 584
4500 490 / 572
5000 517 / 542
5500 515 / 492
6000 486 / 425

This combo has 30 lb-ft more torque at idle than the max torque number on the bigger cam. And it's at a more streetable (and less expensive) RPM. At 2000 RPM the more modest cam setup beats the bigger cam setup by 44 HP and 116 lb-ft torque. At 3500 RPM, the difference is 57 HP and 86 lb-ft torque. That's a chunk of lost performance at the RPM where you need it most for the street.

In short, remove the exhaust bump and ditch the big cam in favor of one more matched to your combo. You'll be much happier with the result.

Brad

 

Sound reasonable, however could you run the numbers with this cam setup again please?
Grind number HR-216/325-2S-12

This is between the two and want to see if it may be similar to lower end cam if i decide to have a full porting job done on the head with larger valves.

 

The 325-2S-12 makes a little more HP, but is way down on torque. Plus, it makes power at an RPM your crank/rod combo will just barely support.

RPM HP / Torque
2000 193 / 505
2500 249 / 522
3000 302 / 528
3500 366 / 548
4000 427 / 561
4500 483 / 564
5000 521 / 547
5500 540 / 515
6000 531 / 464

Still too much cam for your heads. Again - sound good/run bad. Stick with the baby roller. To support even the middle roller you would have to invest a chunk of money in the heads. All-out port job with bigger valves and a valvetrain capable of handling the stresses of a roller lobe profile at 6000 rpm. Not cheap - you will quickly tie up some very serious cash in this setup.

Brad