Okay everyone here is my setup for my new motor if someone could estimate my horsepower at 6000 rpms or be great enough to run DD2000 on my combo I would greatly appreciate it thanks for taking the time to scope this out:

Chevy 400 (4-Bolt) bored .030 over
Edelbrock Performer Heads 64cc 2.02, 1.60 valves w/steam holes
Summit Camshaft 234 in 244 ex @50
Victor Jr. Open Plane Intake
750 CFM Edelbrock Carburetor
Stock Bottom End with MSD 6AL keeping revs low
10:1 compression with 10:1 Flat-Top Keith Black Pistons

Does anyone think that the small CC chambers on the head will make a huge difference underr 6000 rpms? any suggestions to myself or sarcasm greatly appreciated

 

whatever heads you run i'd port them, run smallest chanbers i could and dished pistons. i'd loose the edlecrap carb and run a holly or demon and i'd run a duel plane intake unless it's going to be a race only engine and see 7500 or so rpm. i'd stud the block and i'd go with 5.7 or more likely 6 rods. run a m55 pump with a #26 spring from mr gasket

 

The intake is far too big for the rest of the combo. The car will be much faster with something like a Performer RPM. The heads are small for a 400, the RPM ones would be a better match than the Performer ones.

Don't cheap out on the cam. As cheap as flat-tappet cams are generally, get a good one. I'd suggest a Comp XE274H with 1.6 roller rockers.

With flat-top pistons and 64cc heads, your CR will be over 11:1; not streetable at all. I am running 12cc dish pistons in my 400 with 64cc heads, that gives about 10.4:1, which is about the limit.

Chamber size has nothing to do with flow.

Steam holes goes without saying: after all, they're going on a 400 block. That's something you do in your own garage. Same with .030" over: it's just maintenance, not a mod, don't waste the ink, you might as well list "hot tanked and new freeze plugs" in your list.

Ditch the Carter carb and put a Holley or Demon on it.

With the RPM heads and the parts listed above you should be in the 450 - 460 HP neighborhood, assuming you take care of the exhaust side of things, and you don't use a "drop base" breather. This will occur at around 53-5400 RPM. The power will crater before 6000 RPM, and you'll risk scattering your parts all over the pavement if yyou go past that very much or very often.

 

Wow, you guys really don't like ThermoQuads, do you?

 

You'd be better off with 72 cc heads on a 400 with flattops.
You'd want to "0deck" the block. Your cr would be 10.42...
Or you can go with 64 cc heads and a 18 cc dish piston
on a "0 Decked" block and get 10.11:1.
Then you'd be pump gas ready. Getting the deck height,
and quench clearance is most important and doesn't show up in
DD2000.

If you're not using a 3000+ rpm converter, you'd be happyier with a Performer rpm intake.

I don't know why the others are bashing Edelbrock carbs.
I just swapped a edel 750, replaceing my holley and it is smoother
more responsive.better on gas and runs exactly the same at the track.
I've owned this holley for 25 yrs and it's a good carb, ( "Dialed In" would be an understatement) but the Edelbrock carb is very impressive. I recommend it.

http://www.kb-silvolite.com/