[69fastback]

I'm in the process of building a 408. I'll be using a custom grind, hydraulic, roller cam, and AFR 205s. I'm going to try and keep the compression at no more than 10.5:1, and I plan on twisting around 6200-6300 rpms.

It's mainly going to be a street machine, that will go to the track a few times a year, and it's not a daily driver, but I will be driving it quite a bit. Probably 10,000-12,000 miles per year, and it's a manual transmission.


I'm looking for the right intake, and I want to keep the stock hood. I have a Weiand stealth on the 351W right now, and I was wondering if that would be a good choice for the increase in cubic inches? It's supposed to be rated from idle to 6800 RPMs on the 351, but I figure with those heads, and cubes it may not be sufficient for anything over 6000 RPMs. Thoughts?

What are the thoughts on a single plane for what I'm doing? I know a lot of people don't like single planes for the street, but I already have hood clearnace issues, so something like an RPM air gap is out of the question, so would a single plane be a good compromise?


I would really like to see in the 500hp range out of this. Any help is appreciated.

[TurboLX]

well whats your spending range?

[69fastback]

I'm not a fraid to spend a little money

Honestly, I'd like to keep the build at no more than $10,000, and I'm doing the assembly myself, so that shouldn't be hard. I have a hookup on some parts too, for example, my scat stroker kit with H-beam rods and forged pistons i going to cost me about $1100.

[Racinjason81]

a single plane would give up a little on the bottom end but with those extra cubes you will most likely need to go this route like a low to medium rise single plane manifold you may want to look into an edelbrock torker or torker 2 or if they make one for a 351w a weiand xcelerator or maybe you could get the stealth port matched.the hood clearance really limits your selections

[Kobra Killer]

Typically single plane intakes operate best from 2500 to 7000 RPM.
Your cam should work best in that range also (usually needs a roller cam).
The heads & valves also need to flow enough air to support those RPMs.
A stick trans doesn't care much about RPM range but automatics do.
you would need a torque converter with at least 3000 RPM stall.