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i wasn't going to jump on this thread, but why not.. fact: the 1st run of 56 alum manifolds were separated- in testing, a vacuum signal differential was noted to be a negative effect on performance [obviously- its like 2 4cyl engines fighting eachother if vacuum signals aren't in equalibruim- even the later sonoram setups have a balance tube]
the 2nd run of aluminum intakes were open, though few were used by that time.
all iron manifolds are open plenum- the rear carb is the primary- as to somewhat centralize the accelerator shot- if the frt was the primary, you'd have a lean backfire just about every time you accelerate- due to an extreme lean situation at the rear cyls- dont believe that- try it!
some early alum intakes and the ones sold over the counter also had no choke provisions. the walled intakes were set up with dual/calibrated manual chokes. saw that in literature, and on ron's actual intake from when he raced in the 50s.
no matter how you slice it- dual carbs on anything below 400cuin is over-carbureted... notice a 58 power pack 318, though less hp, has more torque, which is your power to propel, hp is the stamina to keep that pullig power going- compared to electricity- torque is your amperage, hp is your voltage [speed behind the power].
most engines that are baselined/dyno'd with a single 4 tuned to the engine, suffer with dual quads. i know 2 people on here making real hp can attest to that-
at the time- multi-carb setups were hot- and worked... but technology wins...
but i'll still run 2-4s, 3-2s, tunnel rams, and sonorams- for the awesome-to-see factor! the real power stuff runs a 4150 or DFI.
-----Original Message-----
From: Bjwt56@xxxxxxx To: L-FORWARDLOOK@xxxxxxxxxxxxx Sent: Wed, Nov 25, 2009 10:18 am Subject: Re: [FWDLK] 56 Fury linkage vs 57 Fury Linkage Mike:
I was speaking specifically to the 57-58 cast iron boat anchor intake manifold with WCFB or other carbs. That manifold is open from front to back and will run on only one of the two four barrels. I agree that the aluminum manifold needs two four barrels running simultaneously to get any performance from the engine. The intake plenum is divided in the middle. That is why the carbs have solid rather than progressive linkage. John Teske *************************************************************
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