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Old 04-28-2002, 10:19 PM   #13
jim_howard_pdx
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Join Date: Apr 2002
Location: Portland Oregon
Posts: 247
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Use the Weiand "Stealth" dual plane or the Edelbrock Victor single plane. Use an 800 or 850 vacumn advance barry grant carb with annular boosters front and rear. Use restrictors on the transition circuit and you should still hit 14-18 mpg. This should be good for about 450 hp with a modest roller cam and up to 525 hp with a strong street roller cam. Go with the Victor single plane and you will get an additional 10-15 hp but lose the torque under 2,500 rpm.

I do not like to sacrafice low end torque on a street engine. So I would stick with the dual plane. The Weiand is good to 6,500 RPM but when we dyno the Edelbrock there seems to be no big difference between the Performer 351 and the RPM 351 manifold. I am using the RPM 351 and wish I had tried the Weiand unit.

Is the Pantara running a 4 speed ZF or a 5 speed ZF? If it has overdrive, make sure to run the dual plane. If it has the 4 speed, then the single plane will really power when at top speed. One of my California buds got 181 mph with a 351 Cleveland, Webber downdrafts and Nitrous. The engine dynoed at 575 hp. It was one awesome show car with every engine piece either chromed or polished. It had tasteful fender flairs and custom yellow paint. Man what a looker. I drooled over that car. It was a little piece of Ford heaven.

I learned from my friend that all of these Ford Cleveland engines for the Pantara were shipped to Italy where they were machined to racing tolerances and then balanced and blueprinted. Stock, the engine was putting out nearly 375 hp where the American version struggled to produce 330 hp.

He blew up his original engine and had the show engine built by valley heads in Chatsworth. Just the head work they did ran 2,000 bucks. They cut out the exhaust port, then bolted up a plate that raised the ports by 1/2 inch. They ran it like the D style rat heads of old. Man did these heads flow. We did a run to Las Vegas and got pulled over at 171. The Cop did not even write a ticket, he just wanted to make sure we had proper safety equipment, good tires and brakes. We had 5 point racing harnesses, full back race seats, racing brakes, great tires and all the normal safety stuff. We also had a roll bar, which saved us the ticket. He just asked us not to pass another Patrol car on our way to the car show!!!!!
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1966 Customized for daily street and highway domination. 358 Windsor running 425 HP
C-4 Auto and 3.25 Posi
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