Re: Mopar Commando heads
[Re: S/ST 3040]
#513050
11/07/09 07:19 PM
11/07/09 07:19 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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Good Info Vic, I sure am glad that I decided to go with the Lg port Commando's as the flow number's appear to not support what my effort's would require, look's as tho you have put out quite a bit of effort just to obtain what you have from the small port head, but like I have been told before,,,flow isn't everything, I would be real interested in how they work on the motor.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: Mopar Commando heads
[Re: dartman366]
#513053
11/08/09 06:54 AM
11/08/09 06:54 AM
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Joined: Oct 2009
Posts: 118 Sarasota, Fl
siggie30
member
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member
Joined: Oct 2009
Posts: 118
Sarasota, Fl
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Yes, please continue as I am actively porting my set and am looking for the info. Great read BTW.
I don't even have 1/2 lift, but the other 1/2 is nitroused.
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Re: Mopar Commando heads
[Re: siggie30]
#513054
11/08/09 11:58 AM
11/08/09 11:58 AM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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cool... Ok here are my thoughts...make sure the pushrod hole is not tapper'd. turn up some aluminum stock, make dowls. put some lock tight on the dowls and press them into the factory pushrod holes. then remachine new pushrod holes.. i was gonna offset them anyway.. then you can modify the port entry to accomidate better air and hit your C/sa..#s it sure seems to have taken alot to unshroud the valves...did you happen to cc them before and after? did i gain alot in cumb.chamber CC? you had to press all new guides in the heads? ouch! cheapst
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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Re: Mopar Commando heads
[Re: cheapstreetdustr]
#513055
11/08/09 12:23 PM
11/08/09 12:23 PM
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Joined: Jul 2006
Posts: 4,595 On the south side of Nowhere
S/ST 3040
master
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master
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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Jim, do you have the small port heads? I added clay behind the pushrod to smoothe the transition. Port hangs on easily to .700" lift now but, flow is dismal with 256.8 @ .700" This port should hit mid 260s @ .500" easy. My mistake for posting any flow numbers, modified without a decent valve job. I'll post chamber volumes later.
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Re: Mopar Commando heads
[Re: S/ST 3040]
#513057
11/08/09 12:32 PM
11/08/09 12:32 PM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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actually i like seeing numbers before valve job. you can back cut the valve sometimes to fix low lift numbers..if you loose a little when you port..
any way..i have large port heads.. i had small port heads..but sold them... he still has them though ..i could buy them back...but i dont have an application for them. i am going stroker/bigger...next motor... if i determine the LP commandos wont do..ill be getting some indy heads. cheapst.
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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Re: Mopar Commando heads
[Re: S/ST 3040]
#513061
11/09/09 09:00 AM
11/09/09 09:00 AM
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Joined: Oct 2008
Posts: 458 Michigan
BPE
mopar
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mopar
Joined: Oct 2008
Posts: 458
Michigan
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Vic, Stick with it, they will come around. I think putting "real world" info on here is very helpful. Sometimes in life things don't go exactly to plan, but by you posting this it allows others to make better choices. Keep up the good work, and again Thank You. Rod
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Re: Mopar Commando heads
[Re: BPE]
#513062
11/09/09 03:25 PM
11/09/09 03:25 PM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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no doubt the valves are shrouded.. \even the eddies wil benifit from this. hell..most heads will benifit.. \ thats not a terrible amount gain'd in CC's
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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Re: Mopar Commando heads
[Re: S/ST 3040]
#513067
11/19/09 04:02 PM
11/19/09 04:02 PM
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Joined: Jul 2006
Posts: 4,595 On the south side of Nowhere
S/ST 3040
master
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master
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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OK......my last test on the flowbench after opening the pushrod pinch to 1.010" netted the following: .100"_____62.9 .200"____127.0 .300"____187.9 .400"____229.1 .500"____251.3 Backs up over .500" With valve job and a Ferrea 5050 2.02" .100"_____66.2 .200"____119.3 .300"____176.5 .400"____231.6* .500"____271.4* .550"____280.3 .600"____285.2 346.5 fps @ push rod .650"____285.2 Backs up over .650" * Slight turbulance. Same port but added a 30º back-cut .100"_____68.0 .200"____132.0 .300"____187.6 .400"____240.1 .500"____273.5 .550"____282.9 .600"____282.9 Backs up over .600" I will say this.....68 cfm @ .100" is the most I've ever seen from a 2.02" valve. Must be the nice chamber work. The push rod holes are getting plugged and relocated.
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