Small Block & Big Block Chevy Specific - 350 buildup

Hi all i recently pulled the motor from my 84 monte to install some aluminum heads. anyways i put them on there 210cc intake runners, 2.02 valve. exhaust 70cc port 1.60 valve. 58cc chambers. the engine had a comp cam installed about 3 years ago it was .480 .480 lift. 110deg lsa 231 231 dur @0.50 . has a eledbrock performer intake and 750 holley street hp carb. brought it to the engine dyno and it made only 327hp @ 4700 and 397 tq @3800. not impressed i think the cam is not right for the setup so i called bullet cams and they ground me a cam Intake .507 lift and ex.530 239 247 dur and 107 lsa. they ground the cam with 4deg advance in it . also they recommend i installed 1.6 rockers in the intake so that gives me .541 lift in intake and 240 dur. its a 350 .040 over and compression is 10.4-1 with my pistions. im going back to the dyno this wed any ideas on how much this cam will help???

the previous setup was the comp cam listed below cast heads 76cc chambers 160 cc intake with 1.94 and 60cc ex with 1.60 flat tops and performer intake and 625 eledbrock carb with a 700R4 2500 stall and 3.73 gears. car ran 13.33 best time. Now i built up a 2004R with a 10in 2800-3000 stall. along with new engine combo

I would think you'd be somewhere around 300-350 HP with previous setup. Was intake port matched. The 750 HP holley was a good move, but the current setup should be around 400-425hp with the heads, cam, intake and carb. IMO I would upgrade to a performer airgap and port match to the heads. I would also try a 1" 4-hole phenolic carb spacer. I would need more specific component specs. Like on the heads, what brand, were they pocket ported, ect? Do heads have heat crossovers and if so did you block them? Head gasket compressed thickness? Piston-head clearence?(quench). Just be a lot more specific. I wouldn't have went to a 200-4R from a 700R4. The 700R4 is far mpre superior. I've been a transmission builder, owner/operator over 20 years and sponsored over 10 drag racers. Hopefully I can help. Thanks, ttyl, james