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Old 12-05-2007, 05:35 PM
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G.R. G.R. is offline
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Join Date: Jul 2001
Location: Evans, CO
Cobra Make, Engine: NAF 289 FIA, 347 stroker with Weber 48's, building a '48 Anglia gasser, driving a '55 Chevy resto-rod
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Quote:
Originally Posted by scode
so are the webersdirect a good system? the 44idf's?
thermostat housing manifold or cobra style?
now what other mods do i need? i know i need to re-calibrate the dist right?
what fuel pressure should i run at? do i need a return line?
what should i do about vacuum lines?
any more advice and help would be great, again thanks.
-hawk

Things to keep in mind:
do not go nuts on a lumpy cam--not that Webers can't be tuned to one but it really isn't necessary and you will avoid tuning headaches.

48 IDA's like about 3-3.5lbs of fuel pressure. a pressure regulator is a must. You can use either a mechanical or electric fuel pump

A return line is not needed

Nor are vacumm lines needed

Which choice of manifold Thermostat or Cobra is up to you. The Cobra is period correct. Other than Cobraphiles most folks won't notice the difference.

44 IDF's are easier to tune initially and it is said a more streetable setup, the 48's are a race carb but once tuned correctly are oh so sweet---getting them to that point just requires patientence and perserverance
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