[DeTomaso] Intake Manifolds

[Ken Green]

Dan,
   
        How might the Parker Funnelweb fit into this.  This article (may not have been a fair test?) showed that it outperformed the Strip Dominator over 4,000 RPM:
   
  http://www.fordmuscle.com/archives/2001/04/funnelweb/index.shtml
   
  There was one for sale here:
   
  http://www.nmraracing.com/forums/showthread.php?t=37544
   
  Ken

Daniel C Jones <daniel.c.jones2 at gmail.com> wrote:
  > True, if you are looking for a drag race motor. For street driving
> though, midrange torque is more valuable, and I stand by my earlier
> assertion--the 4145 has superior torque characteristics, even if the
> peak numbers are lower. But I admit there's not much to choose
> between them....

On that engine, with that carb. On a different combo, the results may
be different. I lent one of my Strip Dominators to a friend for a
test and the results were quite interesting. The engine was a 372
cubic inch 351C stroker street engine with Mustang headers and a cam
of 230 degrees duration @ 0.050, 110 LSA and lift in the 0.570" region.
With a Predator variable venturi carb, Jim said the Holley Strip
Dominator intake was better across the board than an Offy Dual Port.
The Dual Port is thought to be a very good low and mid range intake
yet the big port single plane made better low end torque. The reason
was likely due to the ability of the Predator carb to atomize fuel
at the low engine speeds. Annular booster carbs are becoming popular
with larger cams and single plane intakes for the same reason. You'd
likely see similar results with a Strip Dominator converted to
injection.

Tim Tullio got pretty serious about intakes and did a bunch of road and
drag strip intake testing with his Pantera. The engine consisted of an
Erson hydraulic flat tappet cam (232 deg duration @ 0.050", 108 LSA,
0.545" lift), Rhoads lifters, 4V quench heads, flat top pistons, 735
Holley, coatings, C&A rings, MSD ignition, wrapped headers, and MPG
Stinger exhaust port stuffers. Intakes tested included an Edelbrock
Torker, Weiand Xcelerator 4V, Offy Port-o-Sonic 4V, Holley Strip Dominator,
along with a couple dual planes. Tim spent a lot of time optimizing the
carb for each intake. The Holley Strip Dominator was 4 tenths quicker
in the 1/4 mile than the Torker and had, by far, the best driveability
(smooth with no flat spots) of the single planes. He said it rivaled
the dual planes down low, as far as driveability was concerned, and by
3000 RPM was pulling away. Unfortunately, he didn't have access to a
Blue Thunder high rise dual plane for those tests. He could never get
the Torker to smooth out at lower RPM, despite a lot of tuning time.
Note that the single planes tend to be more sensitive to carb tuning
due to the weaker metering signal. Back in the day, Pro Stock Engineering
offered a modified Torker with a center plenum divider. Here's what
they claimed:

"This manifold has been extensively flow tested and is a PSE exclusive.
A special plenum divider provides greatly increased low end and mid
range torque without sacrificing top end horsepower."

Vizard has done tests with a SBC Weiand Xcelerator intake and found
it greatly responds to a plenum divider and I beleive Weiand actually
makes a carb spacer with divider for that intake now.

> I didn't know any other Pantera vendors were stocking the Blue Thunder
> Pantera intake on their shelves though?

I thought both Dennis Quella and Marino Perna stocked them.

Dan Jones
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