557 P-51 XR298R 10.2:1 Dyno results w/vid link - 460 Ford Forum
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post #1 of 18 (permalink) Old 11-17-2007, 05:00 PM Thread Starter
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557 P-51 XR298R 10.2:1 Dyno results w/vid link

My thanks to Scott at RHP for the build.
Motor is a conservative torque street build setup for nitrous.
Peak torque 700lb and 697HP at 5900.
Days after dyno, we discovered many valves where the lash loosened out past 0.030" and the headers needed cleanup on most internal tube welds, likely keeping us from passing the 700hp mark.

This motor should push my 35" tired 79 short box F150 4x brick around with ease. :twisted:

Superflow 901 300rpm/sec
Maddog uncoated headers 2" primary 3.5" collector
3.5" Dynomax Utraflow's
1" HVH super sucker
28-30 degree timing
water temp 182F

Please view the video, comments appreciated. Note no fancy dyno tricks, doors are open, fan blowing away from the air cleaner, stock water pump pulley's.
http://www.youtube.com/watch?v=UalZVjmLHA4

A-460 block
Scat forged rotating kit, H beam rods with bolt upgrade,*Diamond*38cc dished 10.2:1 scj pistons, childs & albert extreme moly rings and clevite bearings.
Pioneer SFI damper
High flow dynamics oil pump HV
Canton oil pan and*pick up
Edelbrock aluminum waterpump
Comp XR298R roller cam kit on 112
Comp pro mag roller rockers 1.7 ratio
Smith brothers custom 3/8' .080' wall one piece push rods 9.1' / 9.3'
ARP head bolt kit
Ported victor intake 4500*flange
Competition carbs 3 circuit 1050 dominator carb
Kaase P-51 cylinder heads flow 373/240 @0.700
Jomar rocker stud girdle

torque HP
3000 583 333
3200 593 361
3400 624 404
3600 642 440
3800 640 463
4000 655 499
4200 681 545
4400 698 585
4600 700 613
4800 697 637
5000 695 662
5200 685 678
5400 669 688
5600 646 689
5800 630 696
6000 608 695
6200 582 687
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1979 F150 4x4 caged, shortbox, play truck
557 P-51 XR298R nitrous
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post #2 of 18 (permalink) Old 11-17-2007, 05:15 PM
 
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Nice build, i beleive your engine is the one that was keeping mine company this summer at Scott's. i have the 533 he just finished.
Glad to hear she worked out good for ya nice numbers
walter grosse
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post #3 of 18 (permalink) Old 11-18-2007, 01:16 AM
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nice build, what lift were the flow numbers at?

wayne
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post #4 of 18 (permalink) Old 11-19-2007, 04:01 PM Thread Starter
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I've updated the flow numbers with the engine build sheet from Scotty.

Pocket ported intake 2.25" , stock exhaust 1.76", 28" water, Bore fixture diameter 4.25, no tube on the exhaust.

Lift Intake Exhaust
.100 76 60
.200 173 111
.300 253 148
.400 321 185
.500 351 210
.600 360 235
.700 373 240

1979 F150 4x4 caged, shortbox, play truck
557 P-51 XR298R nitrous
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post #5 of 18 (permalink) Old 11-19-2007, 06:44 PM
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Wow! That's a great engine. I used to have a '79 F150 4x4 shortbed before I switched to a '78 Bronco.

May God's Grace Bless You

'78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, cold air induction, dual 3" exhaust/Magnaflow mufflers, 100HP progressive dry direct-port NOS, A/C, Lentech Strip Terminator wide-ratio AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, custom traction bars, 4" lift, 35" mud tires
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post #6 of 18 (permalink) Old 11-19-2007, 08:08 PM
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Ohh yeah and I hate you too I would love to have a engine that made that much torque at that low RPM. were you feeding it the nitrous on the dyno and if so how much? that's going to make Onefastford TRUCK.
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post #7 of 18 (permalink) Old 11-19-2007, 09:05 PM Thread Starter
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Danny Cabral
Quote:
Wow! That's a great engine. I used to have a '79 F150 4x4 shortbed before I switched to a '78 Bronco.
Thanks, Your bronco is awesome! Since I've been lurking ~8months, I've always wondered what you can get for fuel mileage and if you tranny is lockup?


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Quote:
Ohh yeah and I hate you too I would love to have a engine that made that much torque at that low RPM. were you feeding it the nitrous on the dyno and if so how much? that's going to make Onefastford TRUCK.
No nitrous or any tricks used on the dyno.
It should make a good hunting truck.... Diesels and chevy's that is. :twisted:
I ran 12.9 at 105mph with a 450hp 466 and 150hp shot of Nitrous. Still plan to use the 150hp nitrous on top of the new motor. I leave the line on the bottle helping motivate my brick of a truck.

1979 F150 4x4 caged, shortbox, play truck
557 P-51 XR298R nitrous
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post #8 of 18 (permalink) Old 11-20-2007, 05:35 AM
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Quote:
Originally Posted by playhard557
Danny Cabral
Quote:
Wow! That's a great engine. I used to have a '79 F150 4x4 shortbed before I switched to a '78 Bronco.
Thanks, your Bronco is awesome! Since I've been lurking ~8months, I've always wondered what you can get for fuel mileage and if you tranny is lockup?
Thanks, my Bronco is no longer a daily driven vehicle (it was for 5 years), so I don't know it's fuel mileage. But I can tell you that the EFI improved it greatly (especially with the ECM set at 15:1 air/fuel ratio @ cruise with increased ignition timing advance.)

My Lentech Strip Terminator AOD is not a lock-up torque converter type transmission. They can't be built as strong. Unfortunately, the overdrive didn't really help 'city mileage' that much. However, 'highway mileage' did increase, and the reduced RPM engine noise was also a great benefit.
https://www.460ford.com/viewtopic.php?t=221

May God's Grace Bless You

'78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, cold air induction, dual 3" exhaust/Magnaflow mufflers, 100HP progressive dry direct-port NOS, A/C, Lentech Strip Terminator wide-ratio AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, custom traction bars, 4" lift, 35" mud tires
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post #9 of 18 (permalink) Old 11-25-2007, 07:40 PM
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seems like a pretty good build. cant wait til i finish mine and get it on the dyno.
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post #10 of 18 (permalink) Old 11-27-2007, 02:34 AM
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That motor would love it in my truck. I could probably run in the 9s with that, on the bottle of course. Thats gonna be one fast 4x4 for sure! Keep us updated!
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post #11 of 18 (permalink) Old 12-02-2007, 08:02 PM
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Is the reason your heads flowed considerably less than the heads Charlie E. and Jon Kaase flowed because of the small bore yours were flowed with? Thanks
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post #12 of 18 (permalink) Old 12-03-2007, 04:14 PM
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Quote:
Originally Posted by hookedonpullin
Is the reason your heads flowed considerably less than the heads Charlie E. and Jon Kaase flowed because of the small bore yours were flowed with? Thanks
The castings were just cleaned up on the intake side only. Mostly on the short turn radii. The numbers charlie is posting in the 400s have more work done than I did.

Given the application full on port work is not needed.




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post #13 of 18 (permalink) Old 12-04-2007, 10:21 PM
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Got any pics of the truck? Love them 4x4's! Should have a lot of fun with that 557. Pat... http://www.youtube.com/watch?v=jfMU4qdJloA
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post #14 of 18 (permalink) Old 12-05-2007, 11:03 PM
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bump
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post #15 of 18 (permalink) Old 01-13-2008, 09:37 PM Thread Starter
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New motor is almost all in and ready to be fired. It's taking forever with holidays and my honeymoon. Not to mention header clearance and new radiator clearance issues.

Pat I finally got something to view.

Video link shows the 1979 truck idling with my old 466. Three chamber Flowmasters 2.5" L&L headers.

http://www.youtube.com/watch?v=WRqTJFa560U

1979 F150 4x4 caged, shortbox, play truck
557 P-51 XR298R nitrous
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