Stage V Hemi replacement head vs Custom head

[Bluefish]

Colleting parts to build a 12:1 572 Hemi in a N/A street/strip deal. Going into a 3400#car. Which head best fits the combo to produce 850-900hp? Dont know the port volumes, but the replacement head flows just over 400@.700 and the Custom head flow just under 500@.700 and about 400@.500". 727/8" 5500

 

[6PKRTSE]

I have Mopar (Edelbrock) heads that flowed 426 (no pun intended) @ .800 on my 528" Hemi with 10.5:1, street driven and makes slightly more that on motor on pump gas , more on race fuel and a ton more on both kits. So, your combo is definitely possible.

 

[Bluefish]

I have Mopar (Edelbrock) heads that flowed 426 (no pun intended) @ .800 on my 528" Hemi with 10.5:1, street driven and makes slightly more that on motor on pump gas , more on race fuel and a ton more on both kits. So, your combo is definitely possible.

View attachment 1098652 View attachment 1098653 View attachment 1098654

Ok, so you make a little more than 850 on pump gas? What size cam did you go with? Has it ever been down the track?

 

[6PKRTSE]

Ok, so you make a little more than 850 on pump gas? What size cam did you go with? Has it ever been down the track?

Yes and yes. Can't tell no more. We do alot of grudge racing around here.

 

[6PKRTSE]

Yes and yes. Can't tell no more. We do alot of grudge racing around here.

Cam is a huge custom nitrous grind so kind of a pooch on motor, (sort of) as my buddies say. The convertor and on nitrous it really wakes up on spray.

 

[Bluefish]

wont be spraying it, just N/A deal. I was thinking 280/286@50, but i'm not sure whats needed with the hemi head.

 

[68 HEMI GTS]

I think a stage V or even a ported edelbrock from modern will get it done on that size engine with your compression and the right cam. I’m shooting for 800 on mine. We will soon see. 548, 11:1 street build.

View attachment 1098721

 

[Bluefish]

thanks

 

[Bluefish]

I think a stage V or even a ported edelbrock from modern will get it done on that size engine with your compression and the right cam. I’m shooting for 800 on mine. We will soon see. 548, 11:1 street build.

View attachment 1098720 View attachment 1098721 View attachment 1098722

I now have the stage v heads from Tim Banning and they flow a little better than yours in the low lift, but not as good as yours at the upper lifts. The cam you have in your 548 looks like a very stout cam. How well does it run, any time slips?

 

[68 HEMI GTS]

I now have the stage v heads from Tim Banning and they flow a little better than yours in the low lift, but not as good as yours at the upper lifts. The cam you have in your 548 looks like a very stout cam. How well does it run, any time slips?

not yet, I’m probably gonna dyno it. Haven’t decided if I’m running it with the cross ram or the barton single. Either way I have some grinding to do on an intake. Motor it’s self is ready.. I’ve been side tracked playing with my dads dart. Had it out at monster mopar over last weekend. It’s starting to come around.

dads car, pumps gas 512

 

[Bluefish]

not yet, I’m probably gonna dyno it. Haven’t decided if I’m running it with the cross ram or the barton single. Either way I have some grinding to do on an intake. Motor it’s self is ready.. I’ve been side tracked playing with my dads dart. Had it out at monster mopar over last weekend. It’s starting to come around.

View attachment 1145456 View attachment 1145457 View attachment 1145458


dads car, pumps gas 512

View attachment 1145459

Nice Dart. Pete at Best Machine just told me he made 800hp with a 10.5:1 572 Hemi with those Edelbrock heads. I like that Milodon chain cover. Think ill get one for my combo.

 

[68 HEMI GTS]

Nice Dart. Pete at Best Machine just told me he made 800hp with a 10.5:1 572 Hemi with those Edelbrock heads. I like that Milodon chain cover. Think ill get one for my combo.

it’s nice, took me a bit to figure it out but once I did I was sold! I’ll probably dyno it at best. They’re about the only ones that will have the dyno headers.

 

[Jifi]

I think a stage V or even a ported edelbrock from modern will get it done on that size engine with your compression and the right cam. I’m shooting for 800 on mine. We will soon see. 548, 11:1 street build.

View attachment 1098720 View attachment 1098721 View attachment 1098722

A little more sence with the timing card .
☝

 

[RS27L0]

Yes and yes. Can't tell no more. We do alot of grudge racing around here.

So where are we grudge racing these days? pm me.

 

[Fran Blacker]

It means gas (petrol) that you buy at your local gas (petrol) station. Usually the highest octane in USA 91 to 93 octane is the highest.

 

[Hemirunner]

I think a stage V or even a ported edelbrock from modern will get it done on that size engine with your compression and the right cam. I’m shooting for 800 on mine. We will soon see. 548, 11:1 street build.

]

Did your heads have helicoils in the spark plug threads? I was completely disappointed in Edelbrock for that.

 

[Jifi]

It means gas (petrol) that you buy at your local gas (petrol) station. Usually the highest octane in USA 91 to 93 octane is the highest.

Yip

 

[68 HEMI GTS]

Did your heads have helicoils in the spark plug threads? I was completely disappointed in Edelbrock for that.

nope and Agree

 

[MoparLeo]

Why not contact the pros. Arrington, Barton, Mazzolini, Indy, etc...
They know the whole combo .
Power is more than a cylinder head.

 

[Bluefish]

I think a stage V or even a ported edelbrock from modern will get it done on that size engine with your compression and the right cam. I’m shooting for 800 on mine. We will soon see. 548, 11:1 street build.

View attachment 1098720 View attachment 1098721 View attachment 1098722

I see you have a 3* split, like mine. 275/278@50-.725 on 110. Will be 11.7 or 12:1 depending on gasket. I have the stage V 2x4 intake, but am now looking at going Indy tunnel ram since that is what i currently have on my wedge street car. I really like T rams on the street. Working on the internal oiling system now. Thats a bit of a head scratcher, but i'm figuring it out with some help from the guys over on Moparts.