Lykins Motorsports 496ci w/ Weber Induction

[blykins]

Performance Summary:
      Cubic Inches:  496             Dyno brand: Stuska
      Power Adder:  Nope            Where dynoed: Dale Meers Racing Engines
      Peak Horsepower: 603 @ 5400
      Peak Torque:  640 @ 4800

Horsepower and Torque Curves:


Engine Specifications:
   Block brand, material, finished bore size, other notes:  Robert Pond Motorsports cast iron, 4.310" bore
     
   Crankshaft brand, cast or forged, stroke, journal size:  Steel Scat 4.250"
     
   Connecting Rods brand, material, center to center distance, end sizes, bolts:  Molnar 6.700"

   Piston brand, material (caster, hypereutectic or forged), dish/dome volume, static CR:  Custom Racetec w/ Calico coated skirts, 10.7:1

   Main Bearings, Rod Bearings, Cam Bearings brand and size:  Calico coated Clevite main/rod

   Piston rings brand, size, other notes: Total Seal, 1.5/1.5/3mm

   Oil Pump, pickup, and drive:  Melling M57HV

   Oil pan, windage tray, oil filter adapter:  Factory deep sump, fitted with trap door system, new replacement oil filter adapter

   Camshaft brand, type (hyd/solid, flat tappet or roller), lift and duration (adv and @.050"):  Custom Lykins Motorsports hydraulic roller

   Lifters brand, type:  Morel, standard travel

   Timing chain and timing cover:  Factory timing cover, Cloyes billet

   Cylinder heads brand, material, port and chamber information:  Trick Flow, out of the box, disassembled, measured, reassembled

   Cylinder head flow in cfm at inches of lift (28" H2O pressure drop):
      Intake               Exhaust
      .100               .100
      .200               .200
      .300               .300
      .400               .400
      .500               .500
      .600               .600
      .700               .700
      .800               .800

   Flow bench used, location:

   Intake valve brand, head size, stem size:  2.190", 11/32"

   Exhaust valve brand, head size, stem size:  1.625", 11/32"
   
   Valve springs brand, part number, specs:

   Retainers and locks brand, part number, specs:

   Rocker arm brand, type (adjustable or non-adj), material, ratio: Lykins Motorsports non-adjustable, POP shafts, stands

   Rocker shafts and stands, brand, material:

   Pushrods brand, type, length:  Custom Trend, 5/16", .105" wall

   Valve covers, brand, type:  Chrome PBF

   Distributor brand, advance curve information:  MSD w/ black cap

   Harmonic balancer brand:  Powerbond

   Water pump brand, type (mechanical or electric):  Edelbrock

   Intake manifold brand, material, porting information:  Blue Thunder Weber

   Carburetor(s) brand, type:  Weber 48 IDA

   Exhaust manifolds or headers brand, type:  Dyno headers

[blykins]

We always seem to say, "There's more left in it" but this time I think it would be very appropriate to say that.  A/F ratios at WOT were 14-14.5 and I had no parts to swap to change the ratios with... 

[jayb]

That's an excellent torque number, reflecting the IR intake.  Certainly more power and torque would have been available with a jet change, but I think HP would have been limited by the size of the carbs.  Those 48 IDAs just don't flow enough air to get much past 600 HP.  I wish that 58 IDAs would be more readily available, they would make a big difference.

[My427stang]

Well done

[Stangman]

Nice Brent heading for a Cobra?

[blykins]

Nice Brent heading for a Cobra?

'69 Mustang