352 Daily Driver 438 hp/456 tq

[CaptCobrajet]

This little engine was so neat I had to post it.  It is a daily driver, 352 + .062 overbore.  Low lift, short duration, 16” idle vacuum.  3x2 EFI on top of the new BBM heads, cnc 2.100 intake ports. Static CR is 9.2:1 and built for 91 octane California gas. 

We made 438 hp/456 torque with dyno headers.  We swapped on a set of Kugel Komponents cast shorties at the end, as that is what will be used in the ‘65 pickup it is going in.  It didn’t hurt it much, and would likely be even closer, but they had a hard bend in the 2.5” pipes between the headers and my exhaust tubes.  Still had 415 hp/ 437 torque!!   

Daniel put a short dyno vid on YouTube @captcobrajet.




Performance Summary:
      Cubic Inches:    362          Dyno brand: Stuska
      Power Adder:     None           Where dynoed: Blair Patrick Enterprises
      Peak Horsepower:  438 at 6120 rpm
      Peak Torque:   456 at 3800 rpm

Horsepower and Torque Curves:


Engine Specifications:
   ‘64 390  3-web block   4.062 bore
     
   OEM 352 iron crank 3.50 stroke
     
   Molnar rods 6.540 FE big end

   CP full skirt heavy duty custom pistons.  1-1-3 mm

   King main and rod bearings

   Mahle. 1-1-3

   M57B with BPE mods

   Aviaid Cobra pan modified for ‘65 F100 chassis

   Camshaft: hydraulic roller .520 lift, 222 @ .050, 110 lobe separation

   Lifters brand, type: Morel short travel

   Timing chain and timing cover: Cloyes double roller

   Cylinder heads:  BBM  C8OE-BP castings  2.100 cnc intake, 1.665 as cast exhaust

   Cylinder head flow in cfm at inches of lift (28" H2O pressure drop):
      Intake               Exhaust
      .100    105      .100     70
      .200    170      .200   135
      .300    225      .300   180
      .400    280      .400   210
      .500    305      .500   225
      .600    320      .600   235
      .700    330      .700   238
      .800    335      .800   238

   Flow bench used, location:  Quadrant Scientific,   BPE

   Intake valve:   2.100 REV 11/32

   Exhaust valve: 1.665 REV 11/32
   
   Valve springs brand, part number, specs: PAC beehive

   Retainers and locks brand, part number, specs: 10*

   Rocker arm:  Rocker Arms Unlimited adjustable

   Rocker shafts and stands, brand, material:  HD  Rocker Arms Unlimited

   Pushrods brand, type, length:  Manton  3/8

   Valve covers, brand, type:  CJ plain fin reproduction

   Distributor brand, advance curve information:  Holley/MSD dual synch

   Harmonic balancer brand:  Powerbond

   Water pump brand, type (mechanical or electric):

   Intake manifold brand, material, porting information: 1961 OEM Ford 3x2  BPE light mods

   Autotrend EFI 3x2 throttle body injection with Holley HP ecu

   Dyno headers and Kugel Komponents cast shorties

[RustyCrankshaft]

Looks like a really cool build and would make a nice commuter and still fun to drive. Really neat seeing the real world difference on those Kugel cast headers. Surprisingly good when you consider dyno headers are usually better than any of the chassis headers to start with. Been considering a set of those Kugel's for my near stock 390 in my Galaxie. Like them even more now.

[e philpott]

those shorty's didn't lose too much to full headers, 18 horse for the cool factor is worth it on a 62-61 Galaxy .

Blair how much more power would a single 4 make over the 3x2 in this application ?

[MRadke]

Will the Kugles fit in a 66 Galaxie?  That's a very cool build.

[CaptCobrajet]

those shorty's didn't lose too much to full headers, 18 horse for the cool factor is worth it on a 62-61 Galaxy .

Blair how much more power would a single 4 make over the 3x2 in this application ?

Eric,  I don’t think a single carb would be as good in this combo.  The 3x2 manifold is sized pretty well for an engine this size, and the injectors in those three throttle bodies are tuned individually.  We checked AFRs in all eight cylinders, and we were able to get distribution pretty darn nice in this set up.

It only has 222 duration at .050.  It’s designed to run DAILY.  If it was a toy, I would like to see what would happen if we threw some camshaft at it……

[fryedaddy]

killer little engine, i will be coming down from kingsport soon to see you.