tryin to get more out of my 400sbc

[jmead1234]

first post here so whats up fellas.. have a 67 c10 i recently bought a few months back for great deal.. i browse the boards all the time for info but just not gettin what im lookin for i know this is a newb post but i like seeing options from people who have similar builds and liked their route they went.. im trying to get into the 550-600 HP range with my build N/A if its possible without a drastic rebuild.. heres what shes got so far, i have attached a engine build sheet and the Engine dyno performed at the builder..

i purchased the vehicle a few months ago and since then just been trying to enjoy it for awhile before i tear into things, mostly just been messing with the carburetor and timing.. but im ready to dive in and get it dialed in more where id like to be.

for those that will overlook bc of it bein an attachment, heres the basic rundown

block: 400 sbc bored .030 over
manley h beam 5.7 rods
srp 139625 4032alloy dish pistons
callies 4340 crank 3.750 stroke
Heads:dart pro1 aluminum heads 64.6cc chambers 200cc intake runner (i cannot find a part number to verify the intake cc )
2.020 int valve, 1.6 ex valve, renegade 99893, valve springs 1.465
diameter, comp 743 retainer, comp 4785 locators assemb height 1.820
figured id list all that in case somethings gives off int runner cc

cam: comp cams xr282hr seat duration @ 006 282int 288ext .570/.520 lift

Compression: 9.7 (might be wrong, calculated myself, semi new to all this)

Transmission: turbo400

Carb: mighty demon 750cfm

Intake: Victor Jr

HEI distrib

has 12 bolt 4:10 gear read end

i'm not sure what stall it has in it but if i was to guess id say 2500

Goals: id like to get the most out of this engine as far a usable HP/torque with a best head/cam/intake swap all together or mix n match or if im missing another option then im all ears.. the truck is a toy, it sits in a garage parked into i feel like playing with it, i drive a 2011 rt challenger that just wasn't making sense to modify the engine at the price/hp so i bought this beauty. It will be taken to the track periodically, but mostly run on the street. I want basically the max of a street machine range dipping into a strip build. So a nasty street machine that will be close to forcing me to put a roll cage into it at the track.

Appreciate all the info in advance, hope i covered all the basics on the info.

[DreamRyder1963]

If I were you I would just leave it the way it is. When you start talking that much power out of a gen 1 sbc, you are looking at it as a complete package individual parts. Plus you will never need more than than on a usable street vehicle. If it isles well and is not a pain to take off in I would leave it and drive the wheels off.

[jmead1234]

what about a simple intake/carb swap.. i think theres room to gain with a tall plane intake and possibly 850 carb?

[DreamRyder1963]

Originally Posted by jmead1234

what about a simple intake/carb swap.. i think theres room to gain with a tall plane intake and possibly 850 carb?

The problem with a tall plane intake is that you typically lose some of your low end power which is the most important range on a street vehicle. You might gain some bragging rights with the higher peak number by you will never see it on the street.

[imjeff]

The SBC 400 isn't a real rev motor. I'd leave it as is, maybe tweak here and there, but you're already up there for a carb motor...and I wouldn't push it with gas or induction. Welcome!