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Mopar stage 6 heads #2205545
11/30/16 11:04 PM
11/30/16 11:04 PM
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fast414 Offline OP
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Hey there guys !!! I'm looking at a set of Mopar stage 6 heads to buy part # p4532796
They are brand new in the box ....just had a couple questions about them ...

Cc for for comp ?
Flow?
Bolt on a normal intake without spacers ?
Angle or straight plug ?
I heard that there were casting with cracking issues also ?

They would be going on a street driven car that will see a decent amount of milage !!

Any help would be awesome !! Thanks

Re: Mopar stage 6 heads [Re: fast414] #2205582
11/30/16 11:48 PM
11/30/16 11:48 PM
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Lincoln Nebraska
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RapidRobert Offline
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All I can remember on em is the intake ports are higher so for a B you would need an RB intake (evidently the height increase is exactly the difference in heights) & as you know head/block milling and OE heights/head gasket thicknesses will require slight adjustments from that when mocking up to check. EDIT If you need spacers for a B intake get ahold of Jerry at SD Concepts a board sponsor here. He made some for me for a SB & they were works of art (dead on perfect), for reasonable money too

Last edited by RapidRobert; 11/30/16 11:54 PM.

live every 24 hour block of time like it's your last day on earth
Re: Mopar stage 6 heads [Re: fast414] #2205588
11/30/16 11:56 PM
11/30/16 11:56 PM
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J_BODY Offline
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what RR said.... and the exhaust port is raised some so it will make header fitment a treat. "IF" you are using an RB block, there were some RB specific intakes made in 4150 and 4500 configuration, but they have been discontinued for years. Prior to that RB guys had to use the spacers and a regular big block intake. Dwayne Porter (Porter Racing Heads) has a lot of experience with these heads.... and probably won't recommend them if you haven't already made the purchase. I'm thinking for a street driven piece, there's better tools for the job.

Re: Mopar stage 6 heads [Re: fast414] #2205629
12/01/16 12:48 AM
12/01/16 12:48 AM
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Idaho
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LaRoy Engines Offline
mopar
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Idaho
Leave 'em in the box. The don't flow any better OOTB than a iron 906 or 452. Straight plug. 440 Manifold on 383 or 400. Spacers on a 440 to use a 440 manifold. Spring pockets flood the seal with oil unless you machine an outlet. Pain in the butt head.

Re: Mopar stage 6 heads [Re: fast414] #2205733
12/01/16 06:35 AM
12/01/16 06:35 AM
Joined: Jul 2011
Posts: 263
Missouri
Big_E Offline
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Missouri
Info;

DSC00026.JPGDSC00029.JPG
Re: Mopar stage 6 heads [Re: fast414] #2205761
12/01/16 11:02 AM
12/01/16 11:02 AM
Joined: Jan 2003
Posts: 73,564
U.S.S.A.
JohnRR Offline
I Win
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U.S.S.A.
Originally Posted By fast414
Hey there guys !!! I'm looking at a set of Mopar stage 6 heads to buy part # p4532796
They are brand new in the box ....just had a couple questions about them ...

Cc for for comp ?
Flow?
Bolt on a normal intake without spacers ?
Angle or straight plug ?
I heard that there were casting with cracking issues also ?

They would be going on a street driven car that will see a decent amount of milage !!

Any help would be awesome !! Thanks


QC on the Stage 6's suck at best, if they are still new in the box and are not FREE then I would pass on them.

Trick flows are the BEST bang for your buck.


running up my post count some more .
Re: Mopar stage 6 heads [Re: fast414] #2205787
12/01/16 12:18 PM
12/01/16 12:18 PM
Joined: Jan 2003
Posts: 11,725
Marion, South Carolina [><]
an8sec70cuda Offline
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Marion, South Carolina [><]
LOL, yep...unless they're free I'd pass on them. Pretty much anything other than a factory iron head is better than a Stage VI. You'd be better off buying used ones that have already had the issues corrected. Plus, I wouldn't buy any used ones that didn't already have port work done by a good shop. New ones will need a ton of work to make them useable.


CHIP
'70 hemicuda street car...8.91 at 150.5 mph w/ 4.10s, 8.97 at 152.5 mph w/ 3.54s so far
'69 road runner 440 w/ Indy SRs
'69 road runner 440-6, 4 speed...Dad's ride
'71 Demon 340 resto project
'06 GMC 2500HD LBZ Duramax...toy hauler
'16 Grand Caravan SXT...baby hauler
Re: Mopar stage 6 heads [Re: fast414] #2205840
12/01/16 01:48 PM
12/01/16 01:48 PM
Joined: Jan 2003
Posts: 12,834
So. Burlington, Vt.
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fast68plymouth Offline
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They are worth considering if the following applies.....

-they are really cheap

-all the qc issues have already been addressed by a shop that is very familiar with them

-they are really really cheap


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Mopar stage 6 heads [Re: fast414] #2206742
12/03/16 12:23 AM
12/03/16 12:23 AM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
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BloFish  Offline
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California
Are these worth porting?

IMG_0098.JPGIMG_0088.JPG

It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
Re: Mopar stage 6 heads [Re: BloFish] #2206743
12/03/16 12:25 AM
12/03/16 12:25 AM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
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BloFish  Offline
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California
?

IMG_0087.JPGIMG_0100.JPG

It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
Re: Mopar stage 6 heads [Re: BloFish] #2206838
12/03/16 04:11 AM
12/03/16 04:11 AM
Joined: Feb 2005
Posts: 15,260
PA.
pittsburghracer Offline
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PA.
Like others have said, stock they are pathetic but ported is another story. The issues come if you can do it yourself or if you have to pay someone. If you have to pay someone 1000.00 to port them there are way better options out there.


1970 Duster
Edelbrock headed 408
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Mopar stage 6 heads [Re: BloFish] #2206879
12/03/16 11:02 AM
12/03/16 11:02 AM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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BradH Offline
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Val-haul-ass... eventually
Originally Posted By BloFish
Are these worth porting?

They appear to be the same vintage as the new-in-box set I had Dwayne prep for me in 2000. In addition to the porting, they also required new valve guides, and some significant chamber work & milling to equalize & reduce the chamber volumes. In addition, the rocker arm pedestal / valve stem geometry was jacked up until I found a brand of rockers & shaft pedestal shim stack / lash cap combination that corrected the geometry.

The end product performed very well, but the cost in money & time to get to that point was way past what I'd expected when I purchased the bare castings.

That's why Dwayne emphasized "really cheap" in his caveats for them.

Re: Mopar stage 6 heads [Re: fast414] #2206966
12/03/16 02:40 PM
12/03/16 02:40 PM
Joined: Jan 2003
Posts: 12,834
So. Burlington, Vt.
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fast68plymouth Offline
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So. Burlington, Vt.
By the looks of those exhaust ports, someone has already done some porting.

If you had an untouched virgin pair of castings....... By the time you buy all the parts, take care of the "usual" things that are typically wrong with those heads, do a valve job, bowl blend, flat mill and assembly........ It can very quickly add up to over $1000-1200.
That's if they don't have any of the more serious issues they sometimes have, and you don't have to replace the guides, and don't need severe duty parts installed.

The only "cost effective" way to have those heads done, and have the issues taken care of is to do much of it yourself.

It's hard to give an actual price on those things because without having them on hand to inspect, there's no way of knowing how good or bad a particular set is.
Some aren't too bad....... Others are a real mess.

Here's some numbers from a std stage vi with the CNC'd chambers option.
Ferrea 5000 series 2.14/1.81 valves. This is what you got ootb:

Lift--------in/ex
.100---67.4/52.3
.200--126.3/108.5
.300--181.3/137.7
.400--215.0/144.8
.500--235.0/149.1
.550--236.9/149.1
.600--238.8/149.1
.650--240.8/149.1
.700--242.7/149.1

Valve job, back cut, blend bowls:

Lift-------in/ex
.100---66.6/53.0
.200--151.2/123.6
.300--201.7/166.8
.400--242.6/178.5
.500--263.8/183.2
.550--260.0/187.0
.600--261.1/194.2
.650--261.1/197.7
.700--261.1/199.6

This is about what you can expect for mild prep work.
If you want to get into the 290+cfm range on the intakes, you'll have to do some real porting.

The head these numbers came from is one of the versions that had the really huge guide bosses. Some of the later versions had much smaller guide bosses, and those took less work to get the numbers up around 290.

I just looked through my notes......
I have some numbers from a set that had a date of 03/2005 on the box.
These had the much smaller guide bosses compared to the head the numbers above came from. It also had some rough carbide work done in the bowls.
I got 270/190 from that head ootb.......so they are definitely not all created equal.
Of course, I also see it was over 90cc chamber volume.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Mopar stage 6 heads [Re: fast414] #2207258
12/03/16 10:52 PM
12/03/16 10:52 PM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
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BloFish  Offline
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California
I bought these when I got my 575 crate engine way back when. They have not been touched by me. I have not touched a thing on the heads that are being run now. I would like to see how far I can go with these heads since I already have them.


It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
Re: Mopar stage 6 heads [Re: fast414] #2207613
12/04/16 03:39 PM
12/04/16 03:39 PM
Joined: Jan 2003
Posts: 12,834
So. Burlington, Vt.
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fast68plymouth Offline
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So. Burlington, Vt.
Looking closer at the exhaust ports in the pics, it looks like they're CNC ported.

You should see if you can get a couple pics of the chambers, bowls, and intake port openings.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Mopar stage 6 heads [Re: fast414] #2207617
12/04/16 03:46 PM
12/04/16 03:46 PM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
I Live Here
BloFish  Offline
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Posts: 14,775
California
This is what I have handy at the moment.

IMG_0093.JPGIMG_0094.JPGIMG_0095.JPGIMG_0097.JPG

It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
Re: Mopar stage 6 heads [Re: fast414] #2207625
12/04/16 03:56 PM
12/04/16 03:56 PM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
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BloFish  Offline
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Posts: 14,775
California
Just one of the intake.

IMG_0390.JPG

It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
Re: Mopar stage 6 heads [Re: fast414] #2207641
12/04/16 04:20 PM
12/04/16 04:20 PM
Joined: Jan 2003
Posts: 12,834
So. Burlington, Vt.
F
fast68plymouth Offline
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So. Burlington, Vt.
That head is already CNC ported.
Probably wouldn't take much at all to get those into race ready condition.

I've never had a set of those in my shop. I wonder who they had do the CNC work.

What's that part number and date on the box?


When you get a chance, see if you can get a close up chamber shot......like this:

image.jpg

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Mopar stage 6 heads [Re: fast414] #2207851
12/04/16 11:18 PM
12/04/16 11:18 PM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
I Live Here
BloFish  Offline
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Joined: Nov 2004
Posts: 14,775
California
Ok, I will dig em out in the morning.


It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
Re: Mopar stage 6 heads [Re: fast414] #2208368
12/05/16 09:58 PM
12/05/16 09:58 PM
Joined: Nov 2004
Posts: 14,775
California
BloFish Offline
I Live Here
BloFish  Offline
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California
Close up of the intake and casting date 8-15-96

IMG_0401.JPGIMG_0402.JPG

It doesn't really matter whether you win or loose...
as long as you look good doing it!

‘65 A100
‘69 Barracuda
‘06 Mega Cab 2500
‘14 Mercedes-Benz SLK
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