[Jac Mac]

Originally Posted by ratdog

Vent tubes on carb had to be cut so the filter top would fit, I don't have them to close to filter top.

So now we are getting to the real picture. If you had to trim the the vent tubes to fit the filter top originally, then the filter top being approx 1/2" thicker than your original air cleaner lid must be very close to the top of the choke horn also, if thats the case then the filter top 'will' be inducing a restriction & change of flow & pressure as the carb 'see's' it. Remember if you create a restriction at that point the signal to the venturis is increased, drawing in more fuel.( A bit like pulling the choke on partially ).

Now is the carb to hood distance that small that you have to run this current main airfilter height, or could you simply fit a longer air cleaner stud & element or possibly trim a bit more out from the hood under the scoop to allow the taller element etc.

In relation to some of the other posts, have you ever had a hard look at a Daytona Coupe carb air inlet??