FE Power Forums
FE Power Forums => FE Technical Forum => FE Engine Dyno Results => Topic started by: My427stang on August 13, 2023, 08:18:16 AM
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Performance Summary:
Cubic Inches: 429 Dyno brand: Stuska
Power Adder: N/A Where dynoed: Dale Meers Racing, Buffalo, KY
Peak Horsepower: 439 @ 5600
Peak Torque: 471 @ 4300
Engine Specifications:
Block brand, material, finished bore size, other notes: C3 center oiler, 4.25 bore, squared, aligned, torque plate honed
Crankshaft brand, cast or forged, stroke, journal size: Factory cast 3.78
Connecting Rods brand, material, center to center distance, end sizes, bolts: SCAT H beam 6.49
Piston brand, material (caster, hypereutectic or forged), dish/dome volume, static CR: Diamond forged, 14 cc dish, 9.95:1
Main Bearings, Rod Bearings, Cam Bearings brand and size: Clevite rod and FM main bearings, Durabond cam bearings
Piston rings brand, size, other notes: Hastings 1/16, 3/18 standard tension
Oil Pump, pickup, and drive: Melling M57HV, Kevko pickup, ARP drive
Oil pan, windage tray, oil filter adapter: Kevko deep pan, no tray, truck adapter (customer did not have one, just for dyno)
Camshaft brand, type (hyd/solid, flat tappet or roller), lift and duration (adv and @.050"): Customer supplied, early Isky single pattern solid flat, measured at 274 adv, 236 @ .050, .525 lift, 108 LSA on 104.5
Lifters brand, type: Customer supplied solid flat (SBF design)
Timing chain and timing cover: Cloyes 9 position, factory timing cover
Cylinder heads brand, material, port and chamber information: C3 low riser, Rev 3/8 valves, no port work, Viton seals, cups
Valve springs: Customer supplied Isky, unknown part number, 125/300
Rocker arm brand, type (adjustable or non-adj), material, ratio: Factory 427 adjustable, no stands, no studs, with long finger tins
Rocker shafts and stands, brand, material: factory
Pushrods brand, type, length: factory
Valve covers, brand, type: 427 baldy
Distributor brand, advance curve information: Pertronix 3, factory look alike, 38 total
Harmonic balancer brand: Aftermarket,427 copy
Water pump brand, type (mechanical or electric): Stock replacement iron - electric powered on dyno
Intake manifold brand, material, porting information: Blue Thunder medium riser dual quad- unported
Carburetor(s) brand, type: C3 factory low riser carbs, rebuilt by Drew, progressive, vac secondaries left to function normally (not zip tied)
Exhaust manifolds or headers brand, type: Dyno headers
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This one was a fun one one to build, less fun to dyno (only because of the weather giving us a 99 degree dyno cell for the second engine, a spring change and a new valve spring compressor that was made incorrectly. It turned out to be a sweaty but uneventful afternoon)
It was originally planned to be a 429 inch, custom cam, Trick Flow medium riser 2x4 with all the tricks. However, the owner decided to keep it more true to form, and it became basically a blueprinted pump gas 427 than can be driven anywhere, All good and new parts, even the NOS Isky cam, but just a different approach, refreshing to do a mostly original one. The nice thing is, even with a very streetable cam and compression, it out performed Fords original rating.
This one would be a sweetheart in a street Galaxie rowing a 4 speed, I think the owner may sell ultimtely though, trying to thin his herd of very nice cars and engines
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Great build!! With only changing to a 428 crank and everything else staying the same what power increase would you expect to see?
Thanks Brian
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439/429 =1.02331 x 451.69 = 462.22ish hp. Joe-JDC
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Great build!! With only changing to a 428 crank and everything else staying the same what power increase would you expect to see?
Thanks Brian
439/429 =1.02331 x 451.69 = 462.22ish hp. Joe-JDC
IMHO the next area of improvement, without porting, would be the cam, 8 degrees of exhaust duration and increasing lift on both sides would have been beneficial on this or a stroker. This Isky is a very nice running cam but it is old tech and doesn't take the head flow into account
The real benefit would be a head work or a better set of heads. I have no doubt our original plan, TFS heads and a modern cam grind, would have gained over 100 HP with no changes to the rotating assembly, even more with cubes