Re: Mopar Stage 5 head flow?
[Re: lewtot184]
#3141061
04/27/23 06:21 PM
04/27/23 06:21 PM
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A727Tflite
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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.
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Re: Mopar Stage 5 head flow?
[Re: A727Tflite]
#3141065
04/27/23 06:33 PM
04/27/23 06:33 PM
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JohnRR
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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.
Mainstream Media is the new Pravda
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Re: Mopar Stage 5 head flow?
[Re: hemi-itis]
#3141097
04/27/23 09:29 PM
04/27/23 09:29 PM
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gregsdart
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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.
Last edited by gregsdart; 04/27/23 09:30 PM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Mopar Stage 5 head flow?
[Re: gregsdart]
#3141130
04/28/23 05:55 AM
04/28/23 05:55 AM
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Harry's Taxi 2
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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.
Last edited by Harry's Taxi 2; 04/28/23 12:48 PM.
'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.
NOS-used when losing since 1940.
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Re: Mopar Stage 5 head flow?
[Re: Harry's Taxi 2]
#3141133
04/28/23 06:43 AM
04/28/23 06:43 AM
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fbs63
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And their casting quality is crap. I have a set i bought new 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.
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Re: Mopar Stage 5 head flow?
[Re: A727Tflite]
#3141143
04/28/23 07:53 AM
04/28/23 07:53 AM
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lewtot184
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[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.
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.
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Re: Mopar Stage 5 head flow?
[Re: lewtot184]
#3141174
04/28/23 10:38 AM
04/28/23 10:38 AM
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fast68plymouth
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what does it take or cost to get 320cfm from a standard port head? is a trick flow a true 320OOTB? 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.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Mopar Stage 5 head flow?
[Re: fast68plymouth]
#3141193
04/28/23 11:57 AM
04/28/23 11:57 AM
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Al_Alguire
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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.
"I am not ashamed to confess I am ignorant of what I do not know."
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Re: Mopar Stage 5 head flow?
[Re: fast68plymouth]
#3141244
04/28/23 04:15 PM
04/28/23 04:15 PM
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JohnRR
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what does it take or cost to get 320cfm from a standard port head? is a trick flow a true 320OOTB? 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 would say this pretty much sums them up.
Mainstream Media is the new Pravda
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Re: Mopar Stage 5 head flow?
[Re: JohnRR]
#3141668
05/01/23 08:36 AM
05/01/23 08:36 AM
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Streetwize
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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.
Last edited by Streetwize; 05/02/23 09:55 AM.
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Re: Mopar Stage 5 head flow?
[Re: Streetwize]
#3141705
05/01/23 11:08 AM
05/01/23 11:08 AM
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JohnRR
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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 310-ish 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 Muscle motors 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 .
Mainstream Media is the new Pravda
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Re: Mopar Stage 5 head flow?
[Re: JohnRR]
#3141710
05/01/23 11:25 AM
05/01/23 11:25 AM
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Streetwize
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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
Last edited by Streetwize; 05/01/23 11:26 AM.
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Re: Mopar Stage 5 head flow?
[Re: lewtot184]
#3141776
05/01/23 03:38 PM
05/01/23 03:38 PM
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A727Tflite
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These your heads? What was done to them.
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