I am currently putting together a 468 big block for my pro street nova and I have everything picked out except I am having trouble deciding on the heads, carb, and intake. Right now I have a Weiand Tunnel ram, injector style scoop, and two 600CFM Holley carbs. I was told that I would be better off going with an Edelbrock victor jr.and a 1000 to 1050 cfm carb Demon or Holley instead. I was told with the tunnel ram intake the top end power would be good but the low end power and response wouldn't be great for the street. Is this true? Also I was debating on AFR 325 cc Heads vs. Iron Merlin or Dart 350cc heads on what would be the best to run. My goal is just to have a relaible pro street car that can also get it done on the track this is more of a nice day weekend car. Any help would be appreciated. Here is my set up minus the heads, intake, and carbs:

468 BBC Block
Grantenelli Fabricated Aluminum Valve Covers
Eagle Steel Crank
Eagle Forged Connecting Rods
GM Performance Parts Harmonic Balancer
Pete Jackson Gear Drive Noisy
Comp Cams Magnum Camshaft Hydraulic
Comp Cams Magnum Lifters
Crane Energizer Roller Rockers
Comp Cams Stainless Steel Valves
Clevite 77 Bearings
Comp Cams Magnum Push Rods
Speed Pro 10:1 Forged Pistons
Weiand High Flow Polished Aluminum Water Pump Mechanical
Specter Billet Pulleys
Moroso High Volume Oil Pump and Pickup Kit
Moroso Street/Strip Oil Pan
Be Cool Aluminum Radiator with Electric Fan and Aluminum Shroud
MSD Pro Billet Distributor
MSD Blaster 2 Coil
MSD 6 AL Ignition Box
MSD Super Conductor Plug Wires
Jegs Chrome High power starter
Power master GM 100 Amp Chrome alternator
Optima Red Top Battery
Holley Pro 140 GPH Electric Fuel Pump
Headman Ceramic Coated Headers  

for a 468 look at something in the 300-310 cc range.edelbrock rpm heads are 290,make real good torque.  

Because of the long intake runners, a tunnel ram manifold operates best at high RPM, and is not that good for the street. You'll be better off going with a dual plain high-rise manifold of some sort over the tunnel ram.  

like 55 said,unless you are going for EYE APEAL,use a dual plane intake.make lot of power/tq.have fun!  

Yeah eye appeal was a factor. A guy at jegs said get a comp cams thumper cam and use 305 afr cc heads and it should have the torque and cubic inches to work fine. He said since my car is a 4 spd its going to be a little bit more forgiving.  

I actually have an original 1969 Corvette 427 bbc 435hp with matching number heads and everything right now but since that is a rare engine I would rather sell it than build it for horsepower.

My heads are
3964291 396/402/427/454 69-70 2.19/1.88 108cc L-78/L-71/L-72/LS-6 Rectangular port 325cc intake

and my block is
3963512 427/454 69-71 335-450HP 2 & 4-Bolt COPO

I planned to sell the long block and keep my top end parts like my carbs, ignition, pumps, intake, scoop etc. This was my full set up I planned to do once I sell the vette 427.

TRANSMISSION:
Muncie 4-Speed Transmission
Cincy Driveline Custom Driveshaft
Zoom Stage 3 Multi-Friction Clutch
Hurst Competition plus Shifter

ENGINE:
468 BBC Block
AFR Magnum 305cc Aluminum Heads
Grantenelli Fabricated Aluminum Valve Covers
Weiand Hi-Ram Tunnel Ram Intake
Holley Dominator 600 CFM Carburetors
Eagle Steel Crank
Eagle Forged Connecting Rods
GM Performance Parts Harmonic Balancer
Pete Jackson Gear Drive Noisy
Comp Cams Thumper Camshaft
Comp Cams Magnum Lifters
Crane Energizer Roller Rockers
Comp Cams Stainless Steel Valves
Clevite 77 Bearings
Comp Cams Magnum Push Rods
Speed Pro 10:1 Forged Pistons
Weiand High Flow Polished Aluminum Water Pump
Specter Billet Pulleys
Moroso High Volume Oil Pump and Pickup Kit
Moroso Street/Strip  Oil Pan
Be Cool Aluminum Radiator with Electric Fan and Aluminum Shroud
Spectre Wire Plug Wire Loom
Mr. Gasket Injector Style Street Scoop
ARP Studs and Bolts

IGNITION & ELECTRICAL
MSD Pro Billet Distributor
MSD Blaster 2 Coil
MSD 6 AL Ignition Box
MSD Super Conductor Plug Wires
Jegs Chrome High power starter
Power master GM 100 Amp Chrome alternator
Optima Red Top Battery
FUEL& HOSES:
Holley Pro 140 GPH Electric Fuel Pump
RCI Pro Street 16 Gallon Fuel Cell with foam
Spectre Steel Braided Hoses with anodized fittings

EXHAUST:
Headman Ceramic Coated Headers
Jegs 3 ½” Exhaust Turndowns  

This is actually the first muscle car I have ever picked out every single part for and built from the frame up. I have driven dragsters and even top sportsman cars my uncle had but that was just it I drove them and didn't ever work on them. My uncle passed away last year and my aunt ended up selling the race cars so I wanted to start doing my own thing since he was gone. My other uncle was into hotrods but he was more of a hacker than a builder and actually the one who suggested the tunnel ram intake haha. I also liked the pro street look so I figured why not build one. I'll admit I didn't know a lot about building engines and muscle cars since I never did the work to them I just drove them but I've learned a lot and still continue to learn. I have put a lot of time and money into this car and I want to build it but most importantly I want to build it right even if it means going back and changing parts.