Lykins Motorsports 447FE, Ported TFS Heads, Performer RPM, 617 hp @ 6000

[blykins]

Performance Summary:
      Cubic Inches:  447             Dyno brand: Stuska
      Power Adder:    N/A           Where dynoed:  Dale Meers Racing Engines
      Peak Horsepower:  617 @ 6000
      Peak Torque:  584 lb-ft @ 4800


Engine Specifications:
   Block brand, material, finished bore size, other notes:  D4TE factory block, 4.090"
     
   Crankshaft brand, cast or forged, stroke, journal size:  Scat 9000 series
     
   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:  Mahle 18cc, 10.3:1

   Main Bearings, Rod Bearings, Cam Bearings brand and size:  Calico coated Federal Mogul, coated Clevite rod bearings, Durabond cam bearings

   Piston rings brand, size, other notes:  Mahle, 1mm/1mm/2mm

   Oil Pump, pickup, and drive:  Melling M57B, custom Kevko oil pickup

   Oil pan, windage tray, oil filter adapter:  Milodon front sump, no tray, factory style filter adapter

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

   Lifters brand, type:  BAM needle bearing

   Timing chain and timing cover:  Cloyes billet, factory timing set

   Cylinder heads brand, material, port and chamber information:  Joe Craine ported Trick Flow, standard valve/chamber layout

   Intake valve brand, head size, stem size:  2.190"

   Exhaust valve brand, head size, stem size:  1.625"
   
   Valve springs brand, part number, specs:  PAC valve springs

   Retainers and locks brand, part number, specs:  Manley titanium retainers

   Rocker arm brand, type (adjustable or non-adj), material, ratio:  Harland Sharp needle bearing, pushrod oiling, 1.76:1

   Rocker shafts and stands, brand, material:

   Pushrods brand, type, length:  Custom Smith Brothers, 5/16 to 3/8 taper

   Valve covers, brand, type:  PBF

   Distributor brand, advance curve information:  MSD Pro Billet

   Harmonic balancer brand:  Powerbond

   Water pump brand, type (mechanical or electric):  Factory cast iron replacement, driven electrically

   Intake manifold brand, material, porting information:  Joe Craine ported Performer RPM

   Carburetor(s) brand, type:  Scott Perkins Q-850

   Exhaust manifolds or headers brand, type:  Dyno headers

[blykins]

The reason I push to always use the same dyno is so I can compare combinations. 

Just as a good comparison, this combination is about 67 hp over the standard 445/hydraulic roller/TFS head/Performer RPM combination that we do.  Very stout upgrade.

[Joe-JDC]

Stout for street compression!.  Do you think the slot made any difference on this combination?  Did you try any different spacers?  Those were the final customer heads and intake, hopefully.  Glad they worked well.  Joe-JDC

[Gregwill16]

Nice job Brent, very impressive.

[Stangman]

Nice job as usual Brent

[blykins]

Thanks.  The constraints for this engine were that it needed to be done by about 6000, needed to run on pump gas, needed to have enough manifold vacuum for power brakes, and he wanted 560-575 hp.  I nailed the first 3, kinda screwed up the last one. 

This engine had 13 inches of vacuum at 1100 rpm. 

[gdaddy01]

he might not mind the plus 40 horse screw up

[TurboChris]

Very very nice.

[e philpott]

how does that cam compare to our SBC 18 degree head employee project ? Good numbers regardless

[blykins]

how does that cam compare to our SBC 18 degree head employee project ? Good numbers regardless

Solid roller vs your hydraulic roller. 

I had to use a solid roller on this one due to the constraints that were given to me.  There was no way to make as much vacuum as he wanted with this rpm level with a hydraulic roller. 

[TurboChris]

There was no way to make as much vacuum as he wanted with this rpm level with a hydraulic roller.

Why is that?

Also, what was the idle like? I imagine it was pretty lopey but thought I'd ask.

[blykins]

There was no way to make as much vacuum as he wanted with this rpm level with a hydraulic roller.

Why is that?

Also, what was the idle like? I imagine it was pretty lopey but thought I'd ask.

It was thumpy, even at ~1100 rpm. 

Hydraulic roller camshafts that work well with FE's have a fairly long advertised duration.   When you combine that with a higher desired rpm peak, you end up with longer advertised durations than usual.  We can only lengthen the LSA so much without having to go to a $$$ custom core, so trying to hit 13-14" of vacuum in this scenario would have been an exercise in futility. 

[fryedaddy]

question,i forgot what the benefits of the plugs in the lifter valley are.can you tell me more about them? never mind,i just read an article on this aubject