Was trying to decide on Dart Pro 1's with 180cc or 200cc intake runners. Im not sure if my setup will be fine with 200cc's or will i lose too much bottom end?

This is my setup:

Engine size: 355
Cam: Comp 294S -solid flat tappet .525 lift
Intake manifold: Professional Products Cyclone+plus midrise
Carb: Holley 750 vac/secondary
Holley blue electric fuel pump
10:1 pistons
have 1.52 roller rockers for the heads
rear end: posi w/3.73 gears
Trans: 700r4 w/2800 stall and transgo shift kit
Aluminum driveshaft

I also have a goal of around 400rwhp. Tips and suggestions welcome.

Also will be upgrading my suspension and getting better torque arm.

 

anyone have any info/suggestions?

 

The 200cc heads will work fine for ya. They really work good with some more porting. For 400RWHP you'll want to go to a port matched Vic JR intake with that cam a 3500 stall is best..

 

I was thinking I might need a larger type intake, but i think a Victor JR intake might be a little much. The manifold listed is just what i already had, only thing i dont have yet are the heads. Also was wanting it to be a dual plane. What about an RPM Air Gap manifold?

 

Also might be switching to a T56 transmission. Not sure if the 700R4 will withstand the beating.

 

Don't think you'll hit "400RWHP" with a dual plane manifold.
Not without Extrude Honeing.

I like dual planes, have one on my car.
Put the car together with the intake you have now
(port matched if course) if the car is not fast enough switch to a Vic JR. It won't be too much.

I'm not crazy about the th700r4. With your engine combination the 4th gear overdrive gets you no benefit. They are not as strong and cost way more than a th350. Also weight more and absorb more power.
You could get a new rebuilt th350 with the right torque converter for less than the cost of a stock th700r4 rebuild.

Don't get hung up on a 400rwhp goal. (Chassis dyno numbers, especially peak numbers need to be taken with a big grain of salt) Dyno test the motor before installing it if you want to know how much power its making. Go to the drag strip and make the car perform (Tuning, tuning, tuning, changing parts) . That's where the rubber meets the road.