Bullock's Power Service - iron head TW 452 - pump gas 517 HP / 509 TQ

[My427stang]

Engine use -Cobra 3.73 4 speed, pump gas street car

Dyno run - https://youtube.com/shorts/nnGaQCCs79U?feature=share

Performance Summary:
      Cubic Inches:  452             Dyno brand: Stuska
      Power Adder:  N/A             Where dynoed:  Dale Meers Racing, Buffalo, KY
      Peak Horsepower:  517@6000  (2x 1 inch super suckers) , 506 @ 6000, no spacers
      Peak Torque:  509@4500

Engine Specifications:

   Block brand, material, finished bore size, other notes: 1972 casting hydraulic side oiler, 4.25 bore, squared, aligned, torque plate honed
     
   Crankshaft brand, cast or forged, stroke, journal size: SCAT cast 3.98, internally balanced
     
   Connecting Rods brand, material, center to center distance, end sizes, bolts:  Crower 6.49, FE sizing

   Piston brand, material (cast, hypereutectic or forged), dish/dome volume, static CR: Diamond forged, 4032, 5.5 cc, 9.8:1

   Main Bearings, Rod Bearings, Cam Bearings brand and size:  Clevite rod and main bearings, Durabond cam bearings

   Piston rings brand, size, other notes: Total Seal classic race, 1/16, 1/16. 3/16 Moly top

   Oil Pump, pickup, and drive:  Melling M57HV, Canton pickup, ARP drive

   Oil pan, windage tray, oil filter adapter:  Canton T-pan, no tray, Ford oil filter adapter

   Camshaft brand, type (hyd/solid, flat tappet or roller), lift and duration (adv and @.050"):  Custom Bullock's Power hydraulic roller, 232@.050 intake, 112 LSA

   Lifters brand, type:  Morel standard travel

   Timing chain and timing cover: Cloyes 9-position roller, Ford early 427 timing cover

   Cylinder heads brand, material, port and chamber information:  Small F - C5AE-F medium riser, blueprinted, intake bowl port, well ported exhaust, 11/32 SI valves, 2.19/1.75, bronze guides, Manley Viton seals

   Valve springs: Howards 1.55 170 seat, open 420 (I/E)
 
   Rocker arm brand, type (adjustable or non-adj), material, ratio: ancient HS adjustable

   Rocker shafts and stands, brand, material:  Precision Oil pump shafts, unknown end stands and spacers

   Pushrods brand, type, length:  Custom Smith Brothers 5/16, .116 wall, no oiling

   Valve covers, brand, type:   Chrome pentrood Cobra style

   Distributor brand, advance curve information:  Rebuilt duraspark with Tasca Curve (15 initial, 40 total, all in at 2800)
 
   Harmonic balancer brand:  ATI Super Damper

   Water pump brand, type (mechanical or electric):   Shelby aluminum- electric powered on dyno

   Intake manifold brand, material, porting information:  Ceramic coated Ford TW, no porting, (Super suckers made best power and mixture balance)

   Carburetor(s) brand, type:  2 x Holley repop dual quads

   Exhaust manifolds or headers brand, type:  Dyno headers

[Stangman]

The bore and strok combo of the 452/454 just seems to work so well. Nice Ross.

[My427stang]

Thanks, certainly not a monster, but when you consider iron heads, minimal over bore, and only 232 degrees of duration it's punching hard.  Not to mention being bolted into a roller skate

Wild thing is, when I went back and looked at the logs, HP was still climbing at 6000.  It almost had to be done with the cam that was in it, but I bet there was still 200-400 rpm before it levelled off.