Where to get heads ported
#2383014
10/06/17 04:06 PM
10/06/17 04:06 PM
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Joined: Aug 2006
Posts: 1,613 Deerfield, Ohio
70dusterjohn
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OP
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Deerfield, Ohio
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Looking at getting my -1s ported this year and wanted to hear from you guys.. looking at turn around time customer service and pricing.. let me know you thoughts.. thanks guys John...
Last edited by 70dusterjohn; 10/06/17 04:18 PM.
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Re: Where to get heads ported
[Re: 70dusterjohn]
#2383041
10/06/17 04:56 PM
10/06/17 04:56 PM
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Joined: Jan 2003
Posts: 11,701 Portage,michigan
B3422W5
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I Live Here
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Porter too. Both very good
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: Where to get heads ported
[Re: 70dusterjohn]
#2383123
10/06/17 08:52 PM
10/06/17 08:52 PM
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Joined: Jan 2003
Posts: 14,479 So. Burlington, Vt.
fast68plymouth
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I appreciate the positive comments from the members here who have had me do the work on their heads....... Thanks!!
However, in cases like this where there is a CNC porting service available for a particular head type...... It's usually the more cost effective option(I still do my porting by hand).
Modern, as well as others, have good programs for those heads...... And it's a little like the old story of John Henry. It's tough to try and go head to head(pun intended) with a machine.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Where to get heads ported
[Re: fast68plymouth]
#2383312
10/07/17 09:57 AM
10/07/17 09:57 AM
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Joined: Aug 2003
Posts: 1,573
KOS
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pro stock
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[quote=fast68plymouth]I appreciate the positive comments from the members here who have had me do the work on their heads....... Thanks!!
However, in cases like this where there is a CNC porting service available for a particular head type...... It's usually the more cost effective option(I still do my porting by hand).
Modern, as well as others, have good programs for those heads...... And it's a little like the old story of John Henry. It's tough to try and go head to head(pun intended) with a machine.
yes but with the customer service you provide I would take the slight difference.
Last edited by KOS; 10/07/17 09:59 AM.
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Re: Where to get heads ported
[Re: 70dusterjohn]
#2383404
10/07/17 01:39 PM
10/07/17 01:39 PM
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Joined: Jan 2003
Posts: 14,479 So. Burlington, Vt.
fast68plymouth
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I Live Here
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If I'm selling new Indy heads, and the customer is looking for something that's "fully ported", I just get them CNC'd from Indy, then I do my valve job and prep.
On my bench, after the VJ and prep, a 440-1 CNC 325 flows 360-365. A CNC 345 goes 380-385.
I'm sure someone has a program that flows more than the Indy 345...... But so far, those have been the best 440-1's to cross my bench.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Where to get heads ported
[Re: 70dusterjohn]
#2383442
10/07/17 03:30 PM
10/07/17 03:30 PM
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Joined: Jan 2003
Posts: 30,947 Oregon
AndyF
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Oregon
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Looking at getting my -1s ported this year and wanted to hear from you guys.. looking at turn around time customer service and pricing.. let me know you thoughts.. thanks guys John... Your priorities are turn around time, customer service and pricing? How about flow? Or durability? I'm not just trying to jerk your chain I think you need to consider these things. For example, when Modern did my Indy heads their CNC program was set on "kill". The heads flow a ton of air but they are also fragile since so much material was removed. Is that what you want?? Maybe you do if you are a super serious racer. If you are a bracket racer or a street guy then maybe you don't want your heads ported to the max.
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Re: Where to get heads ported
[Re: AndyF]
#2383512
10/07/17 06:15 PM
10/07/17 06:15 PM
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Joined: Aug 2006
Posts: 1,613 Deerfield, Ohio
70dusterjohn
OP
top fuel
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OP
top fuel
Joined: Aug 2006
Posts: 1,613
Deerfield, Ohio
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Looking at getting my -1s ported this year and wanted to hear from you guys.. looking at turn around time customer service and pricing.. let me know you thoughts.. thanks guys John... Your priorities are turn around time, customer service and pricing? How about flow? Or durability? I'm not just trying to jerk your chain I think you need to consider these things. For example, when Modern did my Indy heads their CNC program was set on "kill". The heads flow a ton of air but they are also fragile since so much material was removed. Is that what you want?? Maybe you do if you are a super serious racer. If you are a bracket racer or a street guy then maybe you don't want your heads ported to the max. I want reliability ... I do bracket race a lot the cars driven on the street a lot .. so I don't want something that is fragile. Just looking to make more power than I am now with out of the box -1 heads ..
Last edited by 70dusterjohn; 10/07/17 06:16 PM.
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Re: Where to get heads ported
[Re: fast68plymouth]
#2383515
10/07/17 06:23 PM
10/07/17 06:23 PM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
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master
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Charlotte, North Carolina
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If I'm selling new Indy heads, and the customer is looking for something that's "fully ported", I just get them CNC'd from Indy, then I do my valve job and prep.
On my bench, after the VJ and prep, a 440-1 CNC 325 flows 360-365. A CNC 345 goes 380-385. How do these numbers compare to a hand port job? Just wondering if CNC is set for a conservative number as opposed to having someone hand port and get a visual of the actual ports before and after.
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Re: Where to get heads ported
[Re: 70dusterjohn]
#2383523
10/07/17 06:45 PM
10/07/17 06:45 PM
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Joined: Jan 2003
Posts: 30,947 Oregon
AndyF
I Win
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I Win
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Oregon
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Looking at getting my -1s ported this year and wanted to hear from you guys.. looking at turn around time customer service and pricing.. let me know you thoughts.. thanks guys John... Your priorities are turn around time, customer service and pricing? How about flow? Or durability? I'm not just trying to jerk your chain I think you need to consider these things. For example, when Modern did my Indy heads their CNC program was set on "kill". The heads flow a ton of air but they are also fragile since so much material was removed. Is that what you want?? Maybe you do if you are a super serious racer. If you are a bracket racer or a street guy then maybe you don't want your heads ported to the max. I want reliability ... I do bracket race a lot the cars driven on the street a lot .. so I don't want something that is fragile. Just looking to make more power than I am now with out of the box -1 heads .. Okay, I think in that case you need to pick up the phone and call a few shops. Be clear that you want to make more power than you are making today but that you do not want lawn sprinklers. The CNC routines may be fine for what you want and they might not. It all depends how aggressive the program is. Since you already have used heads then you might want to start with someone like Dwayne who would pull them apart and check them and figure out a game plan. For new heads I'd start with conservative CNC heads and then step up from there but used heads are a little different situation. It also depends on what cam you are running. Some of the CNC programs are designed to flow a lot of air up top but if you are just running a 0.600 lift cam then why pay for big flow at 0.800?
Last edited by AndyF; 10/07/17 06:47 PM.
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Re: Where to get heads ported
[Re: sgcuda]
#2383537
10/07/17 07:24 PM
10/07/17 07:24 PM
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Joined: Jan 2003
Posts: 14,479 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
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If I'm selling new Indy heads, and the customer is looking for something that's "fully ported", I just get them CNC'd from Indy, then I do my valve job and prep.
On my bench, after the VJ and prep, a 440-1 CNC 325 flows 360-365. A CNC 345 goes 380-385. How do these numbers compare to a hand port job? Just wondering if CNC is set for a conservative number as opposed to having someone hand port and get a visual of the actual ports before and after. I've never seen anything "magical" with these heads...... Meaning flowing more than they "should" for what's been done to them. Without trying to reengineer what's there...... After you've put a good valve job in them, and blended that into the bowls and chambers...... You pretty much have what you have. If you want more, it's a matter of just upsizing the entire port(for the most part). So, to answer the question about what hand ported versions flow..... It usually depends on how much time someone was willing to stand there and make them bigger. I will add that the intake short turn on the CNC 345 seems to have more height than even an ootb unported 440-1........ So I don't know that you can put that exact same port into a std 440-1. I don't feel the Indy 345 program is that conservative. It's a pretty spacious port, and the ex ports are pretty big as well. Myself, I don't like standing there and just hogging chips out of a head to make it "big", so when I port these they are probably more in the 320cc range, and as a result don't flow as much as the CNC versions, which are bigger. I get 350-355 with a 2.19 valve, 355-360 with a 2.25 valve. Truly "ootb" 440-1's....... Meaning NO porting or blending, barely go over 300cfm. But with a nice valve job and bowl blend, along with some chamber work, 340-ish is easy to get. The newest version comes with the chambers CNC'd already, and those are a few cfm better with that first stage of prep. After that....... You're def at the point of diminishing returns when it comes to the amount of time porting vs the gain in cfm. Here are some numbers from a new set with the cnc chambers, just as they came ootb, Indy 2.19 valve and valve job. Zero porting. Lift------ int .100---70.2 .200--146.8 .300--216.4 .400--271.1 .500--304.8 .600--297.3 .700--310.4 That dip around .600 lift can a little tough to get rid of. I guess I should clarify the size thing...... Making them bigger doesn't guarantee you'll get big numbers out of them. The other side of the coin is.......if you keep them on the small side, you're only going to get so much out of that too.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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