super commando LP Rockers?

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Johnny Mac

Johnny Mac

www.blueprintengines.com
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Hey guys, I'm about to start putting this new engine together and came across some interesting information that i thought i should share in case anyone else comes across it.

I had picked up a set of Super Commando Large port smallblock cylinder heads for the latest 408 stroker. Mopar, in all their infinite wisdom, had edelbrock cast them a large port cylinder head, with similar guts to a W2, but retaining the factory intake pattern, and the header pattern. Which was a great idea, and one of the few aluminium cyl heads that can touch 300 CFM. They use a 2.055 intake valve which was supposedly relocated to accommodate the large port runner.
The bolt on Mopar part number rockers for these heads were supposed to be made by crane...before they went under. so long story short, the rockers never got produced. leaving me to guess what rocker they ACTUALLY needed.

at first i thought they'd use a W2 rocker setup, having that offset intake rocker. well no dice at all, not even close, way too much offset. The next guess was a w2 intake, with a factory exhaust, again not even close. now for the kicker... i go pull a set of factory rockers off a junkyard 360 head that i had sitting in the corner, The exhaust line up, but not the intakes.

mopar said they heard both ways on the w2 rockers working. The rockers will have to be custom to my knowledge. Harland Sharp or T&D
 
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Heartland? I think you meant harland sharp?

Interesting head that commando. Your very lucky to have them.

I have a similar issue with max wedge port alum stage vi heads. They neeed an offset intake rocker. About 95% of the rocker's these days are alum,which I dont want. So Im still looking for a non alum rocker with the correct offset.Nope stockers wont work,lol.
 
yes i mean Harland sharp, my spellcheck threw an A in there. anyways yeah i couldn't believe the stockers were the closest to lining up.

out of curiosity why not interested in aluminum rockers? because you have to use hardened shafts and oil restricters?

the harlands are a nice piece and come with shafts, spacers, and the integrated roller bearing, something crane doesn't do...but i sure paid for them.lol as with everything else on this engine. The LA OEM fitment ones will not work however.

i think crane actually makes a steel roller tip..but again with those wedge heads u r probably on a goose chase.
 
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Are you sure they are Lp commandos and not small port commandos which would explain why the stock rockers work. Do you know the casting number off them?
 
L4staero said:
Are you sure they are Lp commandos and not small port commandos which would explain why the stock rockers work. Do you know the casting number off them?
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part number is 5153850 listed right in the new mopar perf book at large port super commando heads.

the mopar tech (of course not always correct) said that he hears 50/50 on if they use the W2, or standard. Unless guys are using steel W2 rockers on factory shafts with no spacers, they definitely wouldn't work on mine. The cranes i ordered were way too offset on the intake side. The mopar book calls the special rockers (that were never produced) offset .350 . i believe the w2 carries almost a .750 and the rocker body was huge.

how such conflicting info and applications are out there i will never know, leave it to mopar.
 
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just a bump wondering if anyone else had come across a similar issue since it's the weekend and people tend to browse the forum more often!
 
yes clearly i mean harland sharp.lol the point of the discussion is more that they stock rockers line up vs the supposed w2 offsets
 
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johnnymac2k6 said:
Hey guys, I'm about to start putting this new engine together and came across some interesting information that i thought i should share in case anyone else comes across it.

I had picked up a set of Super Commando Large port smallblock cylinder heads for the latest 408 stroker. Mopar, in all their infinite wisdom, had edelbrock cast them a large port cylinder head, with similar guts to a W2, but retaining the factory intake pattern, and the header pattern. Which was a great idea, and one of the few aluminium cyl heads that can touch 300 CFM. They use a 2.055 intake valve which was supposedly relocated to accommodate the large port runner.
The bolt on Mopar part number rockers for these heads were supposed to be made by crane...before they went under. so long story short, the rockers never got produced. leaving me to guess what rocker they ACTUALLY needed.

at first i thought they'd use a W2 rocker setup, having that offset intake rocker. well no dice at all, not even close, way too much offset. The next guess was a w2 intake, with a factory exhaust, again not even close. now for the kicker... i go pull a set of factory rockers off a junkyard 360 head that i had sitting in the corner, They bolt right on!!! so all they require is a factory LA rocker setup. i went with a heartland sharp since they have that nice roller bearing inside. i couldn't believe that was even a part number in the book that was completely useless, and identical to the factory rocker.

mopar said they heard both ways on the w2 rockers working. at least I now have an answer! LA heartlands for me!
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does the heads take rocker stands or are the mounts part of the head?

if it take stands ...they will use w2 rockers...and crane is in business again and make w2 rockers. they do not make the rocker shaft which is drilled off center...and a w2 rocker is a w2 rocker whether crane makes it or harland sharp makes it....
 
the mounts are cast into the head. yes i'm aware crane is running again and making w2 rockers again, in fact if you would read above, i ordered a set and they did not fit.
 
Got any pics? Those sound like really good heads and it's great that stock design rockers work instead of a set of special built ones. Do they use a stock type intake? tmm
 
yes they use a stock type intake manifolds(would be wise to gasket match) and they use stock header flanges. thats their major selling point. they are pricey but i convinced they will touch 300 CFM easily. something the edelbrocks really need worked to do from what i've heard.

and a little more research today. the shaft stands ARE cast into the head. maybe the early commando's had the w2 bolt in stands which caused the major confusion. i did have some pics somewhere but can't find them, i'll snap some once they come back from porting.
 
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maybe you do not have large port commando heads?

they take rocker stands and w2 rockers..........if your pedestals are casted into the head...you have commando heads which take standard rockers.....below is a Large Port Commando Head...
 

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part number p5153850 = Super Commando LA rockers
part number p4876310AB = W2 rockers.

so i guess i also crossed the terminology.
The super commando, and the commando LP are 2 diff heads. the flow numbers are the same out of the box, and the LP has a smaller valve, so no sure whats goin on there.
they use the Super commando heads on the 440 commando crate engine that mopar sells, it's a 440 smallblock using a thick walled R3? block i believe.

glad we all figured the mess out of the cross terminology! Thanks guys. sorry if i added to the confusion.
 
I'd like some help between the Super Comando and LP comando head differences.

IIRC, the Super Comando use's a W5 pattern for the intake. Does the LP comando use standard intrakes?

What about exhaust bolt patterens?

This is what I have allways hated about MoPar, lack of info. They are NOT clear.
 
P5153850 Cylinder Head, Super Commando, Aluminum, Machined and
Assembled with 2.080" / 1.600" Valves (5/16" Stem) with HP
Springs, Use Rocker Arm Set P5153995, "LA" Engines

from mopars catalog...Use rocker arm set P5153995

P5153995 alum pkg - large port - .350 offset - engine set $632.00
 
In some cases, like the big-port aluminum LA-engine head P5153850, offset rockers are required to allow the pushrods to clear the larger (wider) ports and connect to the rockers. In this case, offset rocker set P5153995 is recommended
 
THANKS! So, the LP comando head has a pushrod pinch, takes normal intakes and rockers?

The Super comando head takes the offset (.350 rockers) and has no pushrod pinch.
 
apparently i unsubscribed by accident to my own thread
i also have the mopar book, those offset .350 rockers, guess what? NEVER PRODUCED!

part number p5153850 = Super Commando w/ LA rockers..the SUPER is NOT a LP..this has its own rocker stands cast right into the head. again
part number p4876310AB COMMANDO LP heads.= W2 rockers, w2 rocker stands. and listed as a rect. 360 intake in the mopar book. thats all the info i have on them bc i dont have them in hand.
 
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Something I found, probably also listed in the catolog.

p4876310AB COMMANDO LP heads;
Small block performance cylinder head, featuring stock intake bolt pattern for standard manifold, and dual-drilled exhaust pattern for production or W2 exhaust. Utilizes W2/W5 type offset intake rockers allowing unrestricted port cross section from the intake flange to the valve. Intake has an easy flow potential of over 300 cfm with seat and chamber machining and minor porting, making it the best value in small block power potential. Offset rocker allows for the cross sectional area to take power to the next level, far beyond the capabilities of standard layout heads. Compatible with standard intake and exhaust, the Big Port Commando is the low-cost alternative for exotic "race style" heads.
 
johnnymac2k6 said:
at first i thought they'd use a W2 rocker setup, having that offset intake rocker. well no dice at all, not even close, way too much offset. The next guess was a w2 intake, with a factory exhaust, again not even close. now for the kicker... i go pull a set of factory rockers off a junkyard 360 head that i had sitting in the corner, They bolt right on!!! so all they require is a factory LA rocker setup. i went with a heartland sharp since they have that nice roller bearing inside. i couldn't believe that was even a part number in the book that was completely useless, and identical to the factory rocker. QUOTE]

Harland Sharp I believe, nothing is more irritating than a person who doesn't even know the companies they are dealing with.
Click to expand...
 
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