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  #1 (permalink)  
Old 07-16-2002, 04:07 AM
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Default webers

i have a 347 windsor currently running 44mm idf webers which are too small,should i use 48 or 52 mm webers,engine specs are,10.2comp,solid flat cam 560lift 294adv 248 @ .050 110lobe sep,windsor snr alloy heads inlet/309cfm @ 0.700lift exh 209.2cfm @ 0.700lift,1 3/4 4 into 1 headers
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  #2 (permalink)  
Old 07-16-2002, 04:40 AM
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I have some 48mm IDFs on almost exactly the same motor, 342 inches but 10.6 compression. I have not set them up yet, so any specs you have on jetting etc. that comes out of this thread would be of GREAT interset to me. Thanks,

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Old 07-16-2002, 06:32 AM
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Weber never made a 52mm but the 48mm will work fine. Stick with F7 etubes, 200 air correctors, 150 mains, 55 bypass, 65/120 idle/holders, 37mm-40mm chokes if you are looking for street use. These are starting points--jetting anyway, but should get you there. Remember you will have better throttle response with the smaller choke (37mm) than with larger ones. Trade off between performance and streetability.
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