Nacsar 426 Magnesium intake

[Stowe]

Thanks, I know it is magnesium vs aluminum , Wonder how it would compare to 2x4 on my 426 now.

 

[33 IMP]

I think the Nascar dual planes were used on the shorter tracks, the bathtub on the super Speedways (note: I THINK)
They would have used an 850, till Ford prompted holley into building a dominator, and got Nascar to approve it.
Your manifold can use any 4150 style holley, or equivalent, probably as large as you can find....950, 1050 or so (if you believe a 4150 really flows that much)

 

[rickseeman]

It will run great. Hard to believe those NASCAR engines made 550 hp with only a .540" lift cam 60 years ago.

 

[rickseeman]

The bathtub didn't come out until 1966 I believe.

 

[Stowe]

It will run great. Hard to believe those NASCAR engines made 550 hp with only a .540" lift cam 60 years ago.

 

[Stowe]

I will give it a shot.

 

[j-c-c-62]

It will run great. Hard to believe those NASCAR engines made 550 hp with only a .540" lift cam 60 years ago.

Well every port has a flow limit, no matter what the opening, but a motor effectively run wide open at a nearly constant speed (Daytona?) they can handle awful lot of duration, and by limiting lift the rpms can also be raised to a degree I suppose.

 

[Stowe]

This has been floating around , I thought most if not all Nascar Chargers has single 4bbl

 

[j-c-c-62]

Not to pollute the thread, but while we are conversing about rare Mag stuff from back in the day, I've got a Mag Dana 60 Center housing, which I have yet to see anywhere, but I know they are out there. It's headed for a 3 link set-up in my 62 Polara 500 and boy, is it light.

 

[autoxcuda]

Is this Mag intake he's using much different than the one MP sold with it's MP Crate Hemi motors?

 

[rickseeman]

Not to pollute the thread, but while we are conversing about rare Mag stuff from back in the day, I've got a Mag Dana 60 Center housing, which I have yet to see anywhere, but I know they are out there. It's headed for a 3 link set-up in my 62 Polara 500 and boy, is it light.

I love those things. If you decide not to use it I would be interested.

 

[Ceedawg]

About 25 years ago a friend used the bath tub type on his 64 with a 1/4” plate for the top and 2 AFBs. He said it was no problem driving on the street, plenty of power with great drivability. Just like any carb-intake you gotta know how to tune it.

 

[33 IMP]

About 25 years ago a friend used the bath tub type on his 64 with a 1/4” plate for the top and 2 AFBs. He said it was no problem driving on the street, plenty of power with great drivability. Just like any carb-intake you gotta know how to tune it.

Agree, but the bathtub bottom looks like it's begging for a crossram top plate. I bet the mixture distribution with a single four is a nightmare.

 

[mopar jack]

check out old Mopar performance articles on adding dams and walls to improve distribution. I remember seeing articles with pop cycle sticks glued in the manifolds.

 

[rickseeman]

Those instructions are for an Edelbrock Rat Roaster intake. Not a bathtub.

 

[Ceedawg]

Agree, but the bathtub bottom looks like it's begging for a crossram top plate. I bet the mixture distribution with a single four is a nightmare.

He had two AFBs cross ways