Re: INDY 440-1 CNC porting options?
[Re: Moparrob68]
#2833685
10/16/20 10:47 PM
10/16/20 10:47 PM
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Joined: Aug 2003
Posts: 43,123 Bend,OR USA
Cab_Burge
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I Win
Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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Call Bob at Modern cylinder heads at 568-468-7914 and talk to him about doing the CNC porting on those 440-1 heads like he does for a lot of the big name Mopar engine builders, maybe even for Indy before they got sold to the new owners. I've had them do, CNC port and valve job afterwards, several sets of heads including Brodix B1-BS , Eddy RPM ,Indy SR and Indy 440-1 with good results Ask him about changing the intake valves to the 2.250 also at the same time
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: INDY 440-1 CNC porting options?
[Re: Moparrob68]
#2833686
10/16/20 10:49 PM
10/16/20 10:49 PM
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Joined: Jan 2003
Posts: 30,994 Oregon
AndyF
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I Win
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Oregon
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Have been running an out of the box set of 440-1 heads on a 13 to 1 compression 440 for the last 4 years and the combination is maxed out. Was thinking about sending them back to INDY for their 325-CNC porting and a good valve job.Is that a good plan or should I look at other options? Talk it over with Dwayne at Porter Racing Heads. I'm not so sure that you can send them to Indy for the CNC porting since the castings might have changed over time. Dwayne would know the scoop on that. Dwayne can port them for you and/or provide you with some options.
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Re: INDY 440-1 CNC porting options?
[Re: jwb123]
#2833756
10/17/20 08:17 AM
10/17/20 08:17 AM
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Joined: Mar 2006
Posts: 9,824 MI, usa
dvw
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MI, usa
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I am a poor country boy, and I can not afford CNC porting, but I do have a Harbor Freight die grinder, BUT one question I have asked and very few reply to is, WHO did the porting your CNC operations is duplicating? I have a homemade flow bench, and I can hand port most sets close to the CFM of a CNC head, but my heads have more velocity and seem to make a littler more power on the track and dyno. CNC stuff looks real pretty, but just to start a thread, how many people who are selling programs, tell who did the original work that is being copied? Mine are a 10+ years old. Hand ported by the late Jeff Kobylski at Modern Cylinder Head before they had CNC. Car has been 150@3350#. They work pretty good. Doug
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Re: INDY 440-1 CNC porting options?
[Re: dvw]
#2835444
10/21/20 07:56 AM
10/21/20 07:56 AM
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Joined: Aug 2003
Posts: 4,673 On the parachute mount
n20mstr
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On the parachute mount
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I am a poor country boy, and I can not afford CNC porting, but I do have a Harbor Freight die grinder, BUT one question I have asked and very few reply to is, WHO did the porting your CNC operations is duplicating? I have a homemade flow bench, and I can hand port most sets close to the CFM of a CNC head, but my heads have more velocity and seem to make a littler more power on the track and dyno. CNC stuff looks real pretty, but just to start a thread, how many people who are selling programs, tell who did the original work that is being copied? Mine are a 10+ years old. Hand ported by the late Jeff Kobylski at Modern Cylinder Head before they had CNC. Car has been 150@3350#. They work pretty good. Doug Another vote for Modern, they CNC mine and they have been over 400 with a 4.5 fixture.
....BAD A$$ STREET CAR.....
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Re: INDY 440-1 CNC porting options?
[Re: n20mstr]
#2835491
10/21/20 10:11 AM
10/21/20 10:11 AM
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Joined: Jun 2014
Posts: 3,159 Md.
carnut68
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Md.
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Why not Dwayne Porter? He'd get my vote. Even though they'd be hand ported.
America First!
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Re: INDY 440-1 CNC porting options?
[Re: carnut68]
#2835571
10/21/20 12:13 PM
10/21/20 12:13 PM
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Joined: Feb 2006
Posts: 474 Alberta, Canada
451Guy
mopar
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mopar
Joined: Feb 2006
Posts: 474
Alberta, Canada
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My Vote is Dwayne also. I had my SR's done by Modern prior to working with Dwayne. They worked good but cracked underneath the intake springs . Not their issue. I had machined the spring pockets lower to get correct installed height. Their program was for a set of heads that had not been touched. Dwayne will continue to get my stuff until he decides to fire me as a customer!!!! LOL.
Thanx 451 Guy
512 cu in 71 Demon Super Street Car - NO LONGER - Broke Crank Best ET 9.57 @ 139.96
451 cu in Pump Gas - 71 Demon Super Street Car Best ET 9.99 @ 136.80
512 cu in 69 Charger R/T Best ET 11.39 @ 118.11
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Re: INDY 440-1 CNC porting options?
[Re: carnut68]
#2835785
10/21/20 07:04 PM
10/21/20 07:04 PM
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Joined: Aug 2003
Posts: 43,123 Bend,OR USA
Cab_Burge
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Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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Why not Dwayne Porter? He'd get my vote. Even though they'd be hand ported. I called him about porting some heads for me years ago, he sent me to Jeff at MCH for their CNC porting Thanks Dwayne
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: INDY 440-1 CNC porting options?
[Re: drifter]
#2835955
10/22/20 07:34 AM
10/22/20 07:34 AM
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Joined: Aug 2003
Posts: 4,673 On the parachute mount
n20mstr
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On the parachute mount
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Bob at Modern doesn’t answer the phone or return messages must not need the average Joes money YES that is an issue there some times.... However this is the only place that i have experience with. But i dealt with Scott Brown, not Modern direct.
....BAD A$$ STREET CAR.....
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