[69fastback]

I posted this in tech, but it hasn't seen much action, so I'll try it here.

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.

[460brevill]

that weiand should be fine.the most it could cost is a gasket set if you dont like it.i would try it.i would also port match it.

[MustangOne]

This is the one we use on our stroker motors, Very Nice all around performance.



Edelbrock Performer RPM Air-Gap Intake Manifolds
Intake Manifold, Performer RPM Air Gap, Dual Plane, Aluminum, Natural, Square Bore, Ford, 351W, Each

$254.95

If you like you can come by and Drive the 408 Stoker 1970 Twister we built.
This Next week we are building another 427 Stroker motor.

Will will be firing it up Monday the 5/11

[69fastback]

Originally Posted by MustangOne This is the one we use on our stroker motors, Very Nice all around performance. Edelbrock Performer RPM Air-Gap Intake Manifolds Intake Manifold, Performer RPM Air Gap, Dual Plane, Aluminum, Natural, Square Bore, Ford, 351W, Each $254.95 If you like you can come by and Drive the 408 Stoker 1970 Twister we built. This Next week we are building another 427 Stroker motor. Will will be firing it up Monday the 5/11

Originally Posted by 69fastback 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 agree that the RPM air gap is a great intake for what I'm doing, but it will not fit under a stock hood, and I will not put a cowl hood on my car. That's why I am considering a single plane. My dilema is would I be better off with the more broad range the Stealth would give me, but be limited on RPMs? I really don't want to have to have it WOT to get into the power, like I'm afraid a single plane would do.

[Darrell]

Originally Posted by 69fastback I posted this in tech, but it hasn't seen much action, so I'll try it here. 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.

A Victor Jr. should fit under the stock hood. I had one on a 351W in my 65 Mustang and it cleared the stock hood. A single plane intake isn't going to have any effect on streetability as long as the total combination is matched. You will be leaving power under the table if you put a dual plane intake on it. I've run many single plane intakes on street cars with no problems. A good combination is going to run great regardless of what intake is on it. People say the same thing about high stall converters which are plenty streetable as well.

[69fastback]

Originally Posted by Darrell A Victor Jr. should fit under the stock hood. I had one on a 351W in my 65 Mustang and it cleared the stock hood. A single plane intake isn't going to have any effect on streetability as long as the total combination is matched. You will be leaving power under the table if you put a dual plane intake on it. I've run many single plane intakes on street cars with no problems. A good combination is going to run great regardless of what intake is on it. People say the same thing about high stall converters which are plenty streetable as well.

I've heard a lot of people say that single planes won't affect streetability, but I've never actually had one. It seems like you get a different answer from everybody you talk to. I honestly think that will be the best way to go, because of the clearance issues with a stock hood.

[Darrell]

Originally Posted by 69fastback I've heard a lot of people say that single planes won't affect streetability, but I've never actually had one. It seems like you get a different answer from everybody you talk to. I honestly think that will be the best way to go, because of the clearance issues with a stock hood.

The problem with different answers is 70% of the people that give advice on the internet have no experience with the advice that they are giving.

[Katen]

i run a single plane intake on my 302 in my 73, never had any problem with performance or anything for that matter. an i dont think i have noticed any sufficent rpm range difference from a one plane intake to an dual plane intake

[MustangOne]

Originally Posted by 69fastback I agree that the RPM air gap is a great intake for what I'm doing, but it will not fit under a stock hood, and I will not put a cowl hood on my car. That's why I am considering a single plane. My dilema is would I be better off with the more broad range the Stealth would give me, but be limited on RPMs? I really don't want to have to have it WOT to get into the power, like I'm afraid a single plane would do.

I have this Air Gap on a 1970 351W Mach1 and 1970 351W Fastback both use stock hoods. They clear by 1/4 "

The Nice about when I say somthing you can come over a see and touch and Drive what you are looking to do.

[69fastback]

Originally Posted by Darrell The problem with different answers is 70% of the people that give advice on the internet have no experience with the advice that they are giving.

Yeah that's why I asked. I've built a few different engines for my cars in the past, but I have never ran a single plane intake before, so I don't know what it's like.

Originally Posted by MustangOne I have this Air Gap on a 1970 351W Mach1 and 1970 351W Fastback both use stock hoods. They clear by 1/4 " The Nice about when I say somthing you can come over a see and touch and Drive what you are looking to do.

Really? What kind of air cleaner are you running. I have a 1" drop down, with a 14" air filter, and the lid hits the studs on my scoop with the Weiand intake that's on there now. I just don't see any way an air gap will fit.

[MustangOne]

[MustangOne]

That 408 Stroker Runs So Damn Hard.
TKO 5 speed
Cal-traks
Curry 9" 31 Spline rear end 3:55 Gears Eaton Traction Lock

If you like, You can test Drive this car Next Weekend.

[69fastback]

That's basically the same air cleaner setup I have, and like I said, it hits the studs on my scoop now.

I would love to drive it, but I'll be in LAX next weekend

[MustangOne]

Are you useing the 1" spacer Still? This one we are not. And we are using the same hood set you are. And it clears by a 1/4" Runs Great.

[69fastback]

I have a Holley street avenger carb, and no spacer. I plan on driving up some weekend and checking out your shop. I'll probably drive my car up there, and get some ideas from you.

Do you guys do your own body work there? I'm no good at body work, and my car is getting some rust in the usual places, and is going to need some work in the future.

[MustangOne]

We have 3 Trusted Body Shops that do all of our work. We have at least 12 cars a years paint at this time.