Sizing carburetor

Like your old school cam grind numbers.

Here is hands on >

I usually run the Edelbrock 600 1406 on most everything stock build.

Friend had an AVSII 650 cfm for me to test out on the stock fresh build 360 on the engine run stand, with the 340 cam.

Dropped it on, ran perfect right out of the box. Quick starts, great throttle response, nice idle.

Kind of felt like fuel injection. I was running the Mopar HEI distributor that I converted and the basic 60,000 volt E-Coil that I am sure helped with the quick starts and good throttle response, with the hotter spark output.

Oh and 360 has the Weiand 8022 Stealth square bore intake on it also, probably helps too > gasket matched to the stock heads.

Now the 650 AVSII was too much for my friend's 318 so he had me try it.

I felt the AVSII 650 with the Annular Boosters was the perfect match carb for that stock build 360.

It was right for the increased cfm of the 360.

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My experience, I had good results.

Your expectations may be different and may require more fuel.

The jump to 800 AVSII is a pretty big jump.

Have fun experimenting.

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The revised boosters on the AVS2 make a big difference in throttle response, for sure. When I put an AVS2 650 onto my 408 as a test, the throttle response was very much like an EFI. Much better than the Holley style I normally run.