I Might Just Know What I'm Talking About
Join Date: Sep 1999
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Re: What Webber Carb to get....
I think the one you would want is the progressive 32/36. Kit K551. The 32/36 is the size of the barrels - 32 is the main barrel, which it runs on most of the time, the 36 is the secondary, that opens up with more throttle, like 1/2 of a 4-barrel carb.
The 38 is a 2-barrel synchronous, which means the 2 barrels are on all the time, like a regular 2-barrel. This is not really a bad thing, but as I understand it this is more carb (38mm twin barrels, as opposed to the 32/36 of the progressive), and is typically for slightly built up engines. A stock engine will do well with the 32/36. That is what I have.
The 32/36 tunes easily, also, as it only has one mixture screw, seeing as it runs as a 1-barrel most of the time.
I have an 88, but I wouldn't think the 90 would be much different. I seem to remember a listing going up to 90, but it's been a while since I looked at carbs.
Just my opinion. You will also hear good things here of the Motorcraft (MC2100?) swap, some holley carb swap, etc.
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