[TPR] Fwd: [DeTomaso] The 351C dyno mule is on its way to Silver State... I think

[Asa Jay Laughton]

On Sep 12, 2017, 14:55, at 14:55, Daniel C Jones <daniel.c.jones2 at gmail.com> wrote:
>Got a call today that Gerry Romack was warming up the 351C dyno mule
>engine
>which now resides in his Pantera.  Pending a successful shakedown run,
>the
>plan was to load the car up on the trailer and drive to Nevada.  Once
>there, he has to meet up with Larry Stock to replace a scored rotor and
>pad, complete rookie orientation Thursday morning and pass tech
>inspection
>before running the race.  Why is he using the dyno engine, you may ask?
> He
>called a couple of weeks ago to see if I had an engine available as he
>was
>signed up for the race but his engine had developed a bad vibration.  I
>didn't have anything ready built and two weeks was too short to build
>one
>from scratch but the dyno 351C was sitting covered up at Dave McLain's
>shop.  I contacted Dave and he said he was game so a plan was hatched,
>a
>deal was made and parts were ordered.  Dave had the engine running on
>the
>dyno Thursday and Gerry met us Friday.  We spent some more time on the
>dyno
>then loaded the engine in the trailer late Friday afternoon and sent
>Gerry
>on his way to Dave Doddeck's place in Peoria, IL.  Saturday and Sunday
>Dave, Gerry and several other members of the Great Lakes chapter of the
>Pantera Owners Club of America spent the day swapping the engine and
>fixing
>various issues.  Gerry was running EFI but we didn't have time to tune
>the
>system on the dyno so I lent him an intake and distributor and McLain
>lent
>him his dyno carb and fuel log for the race.  Also, the Armondo gated
>and
>baffled road race pan didn't arrive in time so I swapped him the one
>from
>my Fontana engine.
>
>The engine consists of the dyno mule short block (stock stroke with
>0.030"
>over TRW L2379F forged flat top pistons, Reed hydraulic roller cam,
>Crane
>link bar hydraulic roller lifters), a pair of Trick Flow Specialties
>195cc
>351C-2V aluminum cylinder heads and a Weiand X-Celerator 351C-2V low
>rise
>single plane (p/n 7516).  On the dyno, the little 351C made 491 HP @
>6000
>RPM and torque was over 400 ft-lbs from 3500 RPM to 6000 RPM with a
>peak of
>470 ft-lbs.  The dyno runs were made through 1 3/4" diameter primary,
>3"
>diameter collector, Mustang chassis long tube headers, intermediate
>pipes
>and a pair Magnaflow mufflers.  Best timing was at 28 degrees.  Flow
>bench
>numbers are below.
>
>We had several 351C-2V intakes available for testing including
>Offenhauser
>Dual Port, Edelbrock Performer 2V, Holley Street Dominator 2V, Weiand
>Xcelerator 2V and Edelbrock RPM Air Gap 2V but, due to time
>constraints, we
>only ran the Weiand.  In previous testing, the Weiand was bested by the
>Holley Street Dominator and Parker Funnelweb and I think the RPM Air
>Gap
>would have done quite well on this engine but those test will have to
>wait
>for another day.  In any case, I'm sure this engine would top 500 HP
>with
>only an intake manifold swap.
>
>I'll do a full write up with pictures later.
>
>Dan Jones
>
>        Intake  Exhaust
>Lift     2.08"   1.60"
>Inches    CFM     CFM
>0.025    13.3    10.3
>0.050    32.8    26.8
>0.100    64.8    55.9
>0.150    98.5    87.0
>0.200   134.1   114.9
>0.250   164.6   136.0
>0.300   193.5   154.8
>0.350   220.6   173.0
>0.400   240.6   190.4
>0.450   266.8   200.8
>0.500   283.6   206.1
>0.550   298.8   208.9
>0.600   304.0   211.2
>0.650   312.2   212.3
>0.700   289.4   213.3
>0.750   290.5   213.8
>0.800   290.6   215.9
>
>TFS 195cc 351C-2V heads, 62cc chambers, tested on Dave McLain's
>SuperFlow
>flow bench at 10" and converted to 28", clayed intake radius but no
>exhaust
>pipe.
>
>
>------------------------------------------------------------------------
>
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