In race trim the 376 needs ~2300 CC's.
And most have had very good luck with the Kong 2650 on the 427 engines.
For your engine, I just would not want any epoxy used in the blower.
Adjust your HP goals downward, locate a compressor map for the 2650, and from that you can calculate the pulley ratio required to meet your HP demands.
For an efficient engine. . .
(900 Hp * 1.5 / 0.87)= 1551 cfm.
(800 Hp * 1.5 / 0.87)= 1380 cfm.
(750 Hp * 1.5 / 0.87)= 1293 cfm.
And if we take the reciprocal of 1.5, or => 1 / 1.5,
we find that we get the 67% ASE (Air Standard Efficiency).
Also, at 6,500 engine rpm, with a crank having a 4" stroke, your 'mean' piston speed will be 4,333 fpm. Peak piston speeds can be as high as +6,800 fpm. Headed down the drag strip for a short 10.00 seconds or so, not a bad deal.
You might consider reducing your engine speed down a bit. . .
And don't tune the engine for MBT.
Soften the tune at or around MBT.
Don't choose your camshaft until you know the
flow numbers for the cylinder heads.
If you desire to do any calculations regarding flow or velocity profiling, you need to get the MCSA, or the Minimum Circular Square Area of the head. With these heads it is usually the bowl area just under the valve seat.
This also is very helpful in choosing the correct camshaft. . . .
wanted 1000 rwHP.
That meant his heads and camshaft package needed to flow
375 cfm @ or around convergence lift. His MCSA was 3.23 Sq.".
=> (375 / 1.5)= 250 Hp / Cylinder, equals 1000 HP.
His velocity then would be. . .
=> (375 * 2.4 / 3.23)= 279 fps.
Even on a 10° head, that is a high velocity number to achieve.
It takes a very good head to flow those numbers.
So you might desire to speak to him about those MAST Heads.
I don't get too impressed very often regarding cylinder heads, but I was impressed when he laid down about 1016 rwHP, on the first pull. . . .
But I would bore the engine to 4.155" for those
heads, as they use a 2.250" Valve.
Your engine then would be a 434 CID.
Leaning on that engine just a bit, it should make +880 HP.
***When I say 'just a bit' I am being conservative here at 880 HP.
You will most likely need to spin the engine to 6800 for that.
Then simply put a limiter on the engine, maybe 6200 on the lakes.
For endurance I would also bush the lifter bores and
have them machined for a 'Keyed Lifter'.
What you need to know on the camshaft is. . .
How much overlap can you safely run?
If your not going to hook up with someone on this forum for your cam, I have someone that has much experience with these boat engines, and grinds very good cams with the correct finish. Many cam companies Don't!