Reply to "Exciting -------------- when the throttle hangs up !!"

I have pretty much just gone through this and as mentioned you will need to use an adaptor plate to fit that carb to the stock manifold. With a 600 vac sec and stock air cleaner it no longer fit under the stock engine screen. So I have changed to the edelbrock performer intake and 670 ultra avenger and due to the adjustable float bolts the stock air cleaner no longer fit. I bought a 14" drop base air cleaner and it does not fit as the dizzy cap gets in the way. I ended up with a chrome ford racing 13" drop base and that fits well. And it all sits neatly under the screen.

As for the carb I would see if they have any ultra in that make. The ultra is almost half the weight and has float side glasses as standard. Looks damn sexy in blue as well.

However I probably not get the Avenger as I have had a few issues which I don't think should have happened. The first is that the Avenger ultra has an idle circuit on the secondaries. I was told to leave it well alone but with the curb idle screw adjusted out fully it would not idle below 1200 rpm. This in turn caused the accelerator pump control arm to ride on the throttle plate spring and the accelerator pump would not actuate for about an eighth of a turn of throttle. Which then caused a flat spot off idle. So I had to remove the carb to adjust off the secondary curb idle screw. I backed it off so that the secondaries are fully closed and it now uses just the primary idle circuit. Now I can back off the the idle properly and the accel pump arm rides much less on that spring and with a slight bend of the arm it works correctly. Far too much mucking about for something that pretty much should bolt straight on! Now I just need to play with jetting.