Anyone have any flow numbers for the old Stage 5 Mopar Wedge head?

Heads appear to have a professional port job and chambers polished, 2.14 x 1.81 valves.


Just looking for some ball park numbers.

i had a set done years back by dwayne porter. pretty sure all the numbers are in the archives. if not let me know.

Thanks, just looked over what is there.

Unless I missed something ain’t gonna see 320.

I don't think you will , those heads I don't think deserved being called a stage anything , not that stage 6's , other than the chapman versions , were any better.

what does it take or cost to get 320cfm from a standard port head? is a trick flow a true 320OOTB? what are you trying to do?

[quote=lewtot184]what does it take or cost to get 320cfm from a standard port head? is a trick flow a true 320OOTB? what are you trying to do? [/quote

Came across them and thought they would fit the bill for my project - a 493 SixPack.

They are a few passes away from being new and come with roller rockers and a M-1.

Going to put them on the bench as a reality check. Just wondering what to expect.

All the head flow data you can imagine!
http://www.users.interport.net/s/r/srweiss/tablehdc.htm

unfortunately no #s for the stage 5 heads. If i recall, they were only a touch better than a worked on 915. You don't here much about them, which says a lot as well.

And their casting quality is crap. I have a set i bought new years ago when they first came out and used more heli-coils in them than most aluminum heads. They were quite brittle/crumbley....not sure of the correct term.

They finally cracked in a chamber. No idea what they flowed.

They are KNOWN for cracking. I would stay away.

maybe a F.A.S.T. clone? i think those heads i have did 290cfm and i don't think there's any cut and dried formula as far as power out put for 290cfm although some believe there is. a 2.18 valve would probably help that number. exhaust was over 200 without a tube. i was saving mine for a possible 493 pump gas 6pak driver. i replaced the stage 5's with some edelbrock rpms and the truth is i have more money in getting the edelbrocks to run than the 5's. for what i'm doing the edelbrocks don't really have a power advantage (intake port volume was the same for both). i didn't do any professional stage I type porting on the edekbrocks (which would have been even more money) so i cleaned up the crummy port casting and just went with it. what the edelbrocks do is give me a better combustion chamber and do seem to burn better, but in fairness the different intake/carb package plays a role there. i think that most people loose sight of the greatest advantage alum heads have and that is they can be severely damaged and repaired. i think any head with a bunch of porting, cnc or hand, is subject to cracking. anyhow, build sounds interesting to me.

They are indeed.

Here’s my take on the stage V head.........
If one is porting them enough to exploit any advantage they might offer over a stock head in terms of casting thickness(allows for more extensive porting), IMO that means there is probably another head that would be a better choice.

If someone is looking for a 320cfm std port BBM head, the TF240 is absolutely the “easy button” for that.

I had a set WAY back in the early 2000's on my Duster. Typical back half ladder bar all steel car went 9.60's with a 470 with a set at 3100lbs.

Thanks for all the replies. At this point I’ll just see what the bench says.

And decide from there.

Even as is and with the expected purchase price it would be cheaper to buy these than recondition any production cast iron head.
I could use them on one of my streeters.

Wife doesn’t care how fast her car is. 👍

I would say this pretty much sums them up.

Check the tech Archives around 2003-2004

I had a set with 2.19 valves and they went 280+ at .500 and I think about (correction-285!!) at .600

This was just as Edelbrocks were first coming out so probably 20 years ago. They flowed aabout as well as a bowl ported/cleaned up set of Edelbrocks. If I remember there were 2 sets Chuck at (correction: Best Machine) did mine and Dwayne porter did another set.

But they worked amazingly well for what they were on my 508 stroker, back when a streetable 600HP with wall to wall torque was considered a strong motor.

Thanks Bobby , I'll look at it when I get a chance , I didn't realize they were able to get that much flow .

Yeah they have significantly more meat in the roof for porting and a slightly better short side (which is the Achilles heel of the standard BBM head) But like Dwayne just said.....these days there a lot easier ways to get there with the aluminum Aftermarket heads.

I always wondered If Mopar kept making them because they might be allowable as stock replacement heads for various class racing; otherwise I can't see the profitability in even making them anymore....unless they severely discounted them.

As I remember my ported 2.19's flowed within a few CFM of mildly worked over Edelbrocks...which at the time was the only thing other than Indy-1's and SR's that were readily available. I think the short-lived Bulldog heads came out about the same time these were ported.

they worked great on that 508 with a 252/258 Hydralic roller, motor made great power up to about 5800 with my ported Street Dominator and a 1000CFM 4150

FWIW

These your heads?

What was done to them.