I would have to agree with blue_stocker, and besides, you have at least three kinds of TQs:

1) small primary - 1-3/8"
2) large primary - 1-1/2"
3) race carb - 1-1/2" where the 4846 was 850 cfm's while the 4847 was the 1,000 cfm carb

Beyond the pure sizing of it comes the actual tune!

I've been itching to toss the CS-4846SA I have here on my small block, it'll replace the 9800 series I've got right now...won't happen until the spring though.