Here's a fairly mild 428 from many years ago. Ran fine on 91 octane pump gas. Valve train was little finicky with the aggressive camshaft.
Performance Summary:
Cubic Inches: 432 Dyno brand: DTS
Power Adder: none Where dynoed: K&M Machine, Raytown, MO (defunct.)
Peak Horsepower: 517
Peak Torque: 521
Horsepower and Torque Curves:
RPM---HP---Torque
3000--261----456
3100--274----464
3200--288----473
3300--303----482
3400--317----489
3500--330----496
3600--344----502
3700--358----508
3800--371----513
3900--384----517
4000--395----519
4200--417----521
4300--426----520
4400--435----519
4500--443----517
4600--451----515
4700--457----511
4800--464----508
4900--471----505
5000--477----501
5100--483----498
5200--489----494
5300--495----490
5400--500----486
5500--506----483
5600--510----478
5700--512----472
5800--513----464
5900--514----457
6000--515----451
6100--516----445
6200--517----438
6300--514----428
6400--502----412
Engine Specifications:
Block brand, material, finished bore size, other notes:
Factory Ford 428 "C" block. 4.155" bore.
Crankshaft brand, cast or forged, stroke, journal size:
Factory 428 crankshaft. 3.985" stroke.
Connecting Rods brand, material, center to center distance, end sizes, bolts:
Factory CJ rods. ARP 11/32" bolts. 6.483"
Piston brand, material (caster, hypereutectic or forged), dish/dome volume, static CR:
JE pistons. Forged. Flat tops with approx. 5 cc valve reliefs. Static compression 10.5:1. 551.5g. .975" pin. 1.68" height.
Main Bearings, Rod Bearings, Cam Bearings brand and size:
Don't know
Piston rings brand, size, other notes:
1.63mm/1.63mm/4.78mm. spiro locks.
Oil Pump, pickup, and drive:
Melling HV with matching pickup. Heavy duty drive.
Oil pan, windage tray, oil filter adapter:
Milodon deep sump. 8 quarts.
Camshaft brand, type (hyd/solid, flat tappet or roller), lift and duration (adv and @.050")
Comp Cams solid flat tappet. 270/276 @0.020". 240/246 @0.050". .598/.608" gross lift. 108 LSA. 107 ICL. Intake lobe is an XTQ. Exhaust lobe is a TL.
Lifters brand, type:
Crower Dumbbells with EDM hole
Timing chain and timing cover:
Ford Motorsport 9 position chain with factory cover
Cylinder heads brand, material, port and chamber information:
Edelbrock aluminum. Ported. Intake fully ported. Exhaust just cleaned up. CJ exhaust flange. "72cc cast chambers" Actual chamber size 79 cc. 45 degree seats.
Cylinder head flow in cfm at inches of lift (28" H2O pressure drop):
Intake Exhaust
.050 26.9 .050 25.6
.100 61.7 .100 53.6
.200 129.3 .200 97.0
.300 190.4 .300 131.5
.400 236.1 .400 162.7
.500 267.3 .500 191.4
.550 281.3 .550 -----
.600 293.4 .600 205.8
.650 302.8 .650 -----
.700 ----- .700 213.1
.800 ----- .800 217.6
Flow bench used, location:
SF600. 28". Raytown, Mo. Approx. 1200 feet altitude. 4.18" bore tube. Clay radius on ports. No pipe on exhaust.
Intake valve brand, head size, stem size:
Ferrea. 2.09". 3/8" stem
Exhaust valve brand, head size, stem size:
Ferrea. 1.655". 3/8" stem.
Valve springs brand, part number, specs:
Crane 99895
Retainers and locks brand, part number, specs:
Crane titanium retainer. Don't remember part number. Don't remember the locks.
Rocker arm brand, type (adjustable or non-adj), material, ratio
Harland Sharp. adjustable. aluminum. 1.76 ratio.
Rocker shafts and stands, brand, material:
Harland Sharp shafts. Dove aluminum stands with end stands.
Pushrods brand, type, length:
Crane. Stock replacement
Valve covers, brand, type:
Factory "Mercury Pentroofs"
Distributor brand, advance curve information:
MSD 8594. 16 degrees initial. 37 degrees total. Total in around 2800 rpm
Harmonic balancer brand:
Factory Ford
Water pump brand, type (mechanical or electric):
Edelbrock mechanical
Intake manifold brand, material, porting information:
Blue Thunder 1x4. Port matched to heads.
Carburetor(s) brand, type
Holley 4781 850 double pumper. 76 jets all around. Choke horn milled off.
Exhaust manifolds or headers brand, type:
Crites 2" primary. 3.5" collectors.
edit: water temp was kept around 160-165 degrees F while on dyno.
