Posted By: emarine01
Commando small block heads? - 08/14/09 12:06 AM
Are the large port commando heads considered raised runner?
Commando small block heads?
Posted By: HotRodDave
Re: Commando small block heads? - 08/14/09 12:07 AM
Nope.
Posted By: emarine01
Re: Commando small block heads? - 08/14/09 12:11 AM
Cool, any flow potential ported? are they offset intake like W heads? any problems with them , flow , casting ect?
Posted By: HotRodDave
Re: Commando small block heads? - 08/14/09 12:48 AM
They use the same casting as the small port commando and the aluminum magnum.
The differance is in the machining. Obviously the magnum is desighned with magnum rocker stands and magnum intakes, the small port commando is machined to use regular old LA stuff. The large port commando is machined to use W2 style rockers, the pushrod hole is drilled offset to give a wider PR pinch.
As cast they will all 3 flow about the same, somewhere around 230-240 depending on the bench. The large port version can go over 310cfm max ported on pretty much any bench. Useing the 2hp per cfm rule you can see the potential.
Casting quality can be all over the board, some were made by Zeus foundry and they all look good, the other castings look kinda puny and don't say Zeus (my magnums have zeus on them and look great
) ).
The differance is in the machining. Obviously the magnum is desighned with magnum rocker stands and magnum intakes, the small port commando is machined to use regular old LA stuff. The large port commando is machined to use W2 style rockers, the pushrod hole is drilled offset to give a wider PR pinch.
As cast they will all 3 flow about the same, somewhere around 230-240 depending on the bench. The large port version can go over 310cfm max ported on pretty much any bench. Useing the 2hp per cfm rule you can see the potential.
Casting quality can be all over the board, some were made by Zeus foundry and they all look good, the other castings look kinda puny and don't say Zeus (my magnums have zeus on them and look great
) ).
Posted By: S/ST 3040
Re: Commando small block heads? - 08/14/09 01:11 AM
Neither Commando head has raised runners. I've never seen a small port
Commando in person so, I can't say if they are the same.
_________INTAKE_____________Exhaust
.100"____54.7________________60.2
.200"____95.7_______________107.1
.300"___141.9_______________142.8
.400"___191.4_______________161.3
.500"___229.8_______________166.8
.550"___241.5_______________167.2
.600"___252.5_______________168.4
.650"___259.4
.700"___263.6
MP 2.02/1.60 No BC OOTB
Commando in person so, I can't say if they are the same.
_________INTAKE_____________Exhaust
.100"____54.7________________60.2
.200"____95.7_______________107.1
.300"___141.9_______________142.8
.400"___191.4_______________161.3
.500"___229.8_______________166.8
.550"___241.5_______________167.2
.600"___252.5_______________168.4
.650"___259.4
.700"___263.6
MP 2.02/1.60 No BC OOTB
Posted By: emarine01
Re: Commando small block heads? - 08/14/09 01:16 AM
Thanks, good info, sounds like a down trade from my w5s,but got booted outa super stock for having raised runners now I have to give up 500lbs and run with the 4 link tube guys 
Posted By: S/ST 3040
Re: Commando small block heads? - 08/14/09 01:23 AM
A little R&D
Sorry, I didn't shine it all up for the ladies.
_________INTAKE_____________Exhaust
.100"____62.2________________65.6
.200"___116.5_______________121.3
.300"___171.2_______________168.9
.400"___223.1_______________193.9
.500"___265.5_______________204.8
.550"___292.3_______________207.5
.600"___291.8_______________208.6
.650"___295.8 ______________209.5
.700"___***** _____________211.2
Same valves. No BC
***** Backs up.
Sorry, I didn't shine it all up for the ladies.
_________INTAKE_____________Exhaust
.100"____62.2________________65.6
.200"___116.5_______________121.3
.300"___171.2_______________168.9
.400"___223.1_______________193.9
.500"___265.5_______________204.8
.550"___292.3_______________207.5
.600"___291.8_______________208.6
.650"___295.8 ______________209.5
.700"___***** _____________211.2
Same valves. No BC
***** Backs up.
Posted By: dartman366
Re: Commando small block heads? - 08/14/09 01:24 AM
Look on Shadydell Speed Shop's web site and you will see the ones Ryanj did for me, pretty happy with their performance. 
Posted By: S/ST 3040
Re: Commando small block heads? - 08/14/09 01:30 AM
What the hell is this? Mopar must not have
learned anything from the LA head.
learned anything from the LA head.
Posted By: S/ST 3040
Re: Commando small block heads? - 08/14/09 01:35 AM
I can't say, I didn't steal this idea.
Posted By: S/ST 3040
Re: Commando small block heads? - 08/14/09 01:59 AM
Quote:
Thanks, good info, sounds like a down trade from my w5s,but got booted outa super stock for having raised runners now I have to give up 500lbs and run with the 4 link tube guys
Get a set of tuned up INDY 360-2 heads and a ported INDY 360-3
and go back to putting those cry babies on the trailer.
Posted By: Dunnuck Racing
Re: Commando small block heads? - 08/14/09 03:20 AM
Quote:
What the hell is this? Mopar must not have
learned anything from the LA head.
Must have been left on the design table from when Chrysler bought out American Motors.It looks like a "dogleg"AMC exhaust.
Posted By: emarine01
Re: Commando small block heads? - 08/14/09 11:14 AM
It seems the rule changes never favor mopars , the chebie ford guys have a lot more parts to play with. this year super stock changed the rule to factory valve angle with no raised runner and dropped the cubic inch rule to unlimited, pushed the average cubes over 600 now, however they raised the weight brake from 200 to 300 between small block to big block, its a whole new learning curve, If I run with the rails I have to find 3 tenths to keep up, we still run at the head of the pack in super stock but they caught on to the W5s and I get booted outa the bucks, by next year super stock will be super sized in cid and the small blocks will need to be 500 cid to compete, if I move up to pro stock I need to find 2.5 tenths , I can go coil over and 3 link front with rack and pinion and 4 link rear and drop 500 lbs, pretty much rebuild the truck or just go big block like every one else, super stock will be runing 700 cubes next year, I think a A body bracket car is is my next project, I can build one with the extra time i will have from not having to pressure wash the truck 
I can build one with the extra time i will have from not having to pressure wash the truck
Posted By: ZIPPY
Re: Commando small block heads? - 08/14/09 11:18 AM
I've been waiting for their updated replacements (marketed as Super Commando)for a really long time now, and somebody (not sure who) set up the new part number to supercede backwards to the old Commando head, the ones everybody is familiar with.
So at the moment if somebody orders the replacements, the old ones will show up...until they're gone. I think there are about 7 of them left. After that I'm pretty sure MP will discontinue them.
I've checked out a production intent prototype of the new head and it looks REAL nice to me, similar to....if not better than Indybrocks on the intake, and with a much more "normal" exhaust port.
So at the moment if somebody orders the replacements, the old ones will show up...until they're gone. I think there are about 7 of them left. After that I'm pretty sure MP will discontinue them.
I've checked out a production intent prototype of the new head and it looks REAL nice to me, similar to....if not better than Indybrocks on the intake, and with a much more "normal" exhaust port.
Posted By: HotRodDave
Re: Commando small block heads? - 08/14/09 02:48 PM
I think thease heads are great, just way over priced, I can buy a pair of complete ready to run eddys for the price of thease bare. Also the eddys will flow a little more right out of the box so once again mopar missed on the price point 
. All they neede to change was the intake port, it needs to be opened at the PR pinch, even in LA and magnum form there is a ton of room to make (cast) it bigger through that area 
The bowls are great, the chamber can use a little deshrouding where it uses the 2.02 valves instead of the 1.94.
. All they neede to change was the intake port, it needs to be opened at the PR pinch, even in LA and magnum form there is a ton of room to make (cast) it bigger through that area The bowls are great, the chamber can use a little deshrouding where it uses the 2.02 valves instead of the 1.94.