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Re: how accurate is Hughes cfm charts?
[Re: justinp61]
#2305190
05/15/17 10:30 PM
05/15/17 10:30 PM
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Joined: May 2017
Posts: 6
western PA
Ironmike
member
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member
Joined: May 2017
Posts: 6
western PA
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BPE, it sounds to me like you've gone above and beyond what is the usual good customer service.  100% !!! X3! I don't know many businesses that would what Rod has done. He went above and beyond. I knew he was solid the first time I talked to him. I have stated that fact many times. If more businessmen had the ethics and values that Rod has, things would be a lot better all around. Personally, I would rather have them found the issue, grind on another pair and just send them to me. I even told Rod I'm more than happy to be their "test mule". I have a solid bottom end just sitting here, and a dyno 20 minutes away. I really wanted to "stay in the loop". I STILL feel that way. I could be wrong, but I have a gut feeling that big egos get in the way. And it ain't mine or Rod's. Couple posts here made me feel like someone was talking down to me. Like I said, I could be wrong. Won't be the first time.
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Re: how accurate is Hughes cfm charts?
[Re: fishy340]
#2306503
05/18/17 02:59 AM
05/18/17 02:59 AM
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Joined: Jan 2003
Posts: 1,784
PA
W5DART66
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,784
PA
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I will post longer video but internet fighting tonight. https://youtu.be/6Edxg_vihrA   It's late. Will try to update what we did on flow bench. Sorry I had numbers the night I got the heads just forgot to save file and the was first night I had time to put them back on.
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Re: how accurate is Hughes cfm charts?
[Re: 79410aspenrt]
#2306620
05/18/17 12:09 PM
05/18/17 12:09 PM
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Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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Just over 300cfm at a tad under 28".
301.6 @ 27.68" corrects to 305.1 @ 28.00"
Nice numbers.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: how accurate is Hughes cfm charts?
[Re: fast68plymouth]
#2306711
05/18/17 01:46 PM
05/18/17 01:46 PM
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Joined: Jan 2003
Posts: 1,784
PA
W5DART66
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,784
PA
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Just over 300cfm at a tad under 28".
301.6 @ 27.68" corrects to 305.1 @ 28.00"
Nice numbers. Actually the numbers are corrected to 28"👍🏻
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Re: how accurate is Hughes cfm charts?
[Re: W5DART66]
#2306813
05/18/17 03:54 PM
05/18/17 03:54 PM
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Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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Just over 300cfm at a tad under 28".
301.6 @ 27.68" corrects to 305.1 @ 28.00"
Nice numbers. Actually the numbers are corrected to 28"👍🏻 "CCFM"........ Didn't catch that.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: how accurate is Hughes cfm charts?
[Re: 79410aspenrt]
#2307978
05/20/17 03:15 PM
05/20/17 03:15 PM
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Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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Never I good idea to compare data from different dynos...... But.....
416, 12:1, port matched SV, old school 850 Holley, we have a couple sets of dyno headers for these things, and to the best of my recollection I used the 1 7/8 x 3.5 on this motor.
Flat tappet cam, old school .842 lobes, 265/270-106 in at 102, .375/.375, crane 1.5 ductile rockers, straight c12 gas, timing 36, lash .022/.022.
RPM heads with some mid-level effort porting, around 270cfm.
539 uncorrected hp.
Baro 29.98, .53 vapor pressure, 78deg air temp.
BSFC in the low/mid- 4's until the last 4 lines, where it went up to .48-.49.
2.02 valve, 4.00 bore:
Lift-----flow
.100---65.4
.200--132.9
.300--190.3
.400--234.3
.500--268.3
.550--277.8
.600--269.1
.650--268.3
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: how accurate is Hughes cfm charts?
[Re: 79410aspenrt]
#2308296
05/21/17 01:30 AM
05/21/17 01:30 AM
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Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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I just figured I'd post the numbers to show the missing 100ft/lbs at 4000rpm isn't because it can't be done with the SV.
Using small-ish heads and a 4" stroke, things should be well underway by 4000-4200rpm.
With that other motor, it looked pretty soft down low with both sets of heads by the looks of the sheets.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: how accurate is Hughes cfm charts?
[Re: 79410aspenrt]
#2308416
05/21/17 12:08 PM
05/21/17 12:08 PM
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Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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That other motor would have certainly made for an interesting "science experiment".
Swap out a component at a time until you find what's holding it back.
Was there really one thing that was a major contributor, or was it really just a few things that each played a part in the less than expected/desired results?
I will say this, from my perspective....... I don't see anything glaringly wrong with it "on paper", and would have also been looking for better results myself.
This is slightly off topic, but this thread made me think of it again......
I'm really surprised no head company, even someone like Pro Comp has offered up a new aluminum W2 head.
All the support products already exist..... Intakes, rockers, headers.
Just cast the long valve W2's in aluminum. Use 11/32 bronze guides, come up with a more modern closed chamber........ I would think they would sell pretty well.
They're a known quantity........ They work.
Anyway....... That's just a thought from a BB guy.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: how accurate is Hughes cfm charts?
[Re: fast68plymouth]
#2308522
05/21/17 02:30 PM
05/21/17 02:30 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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That other motor would have certainly made for an interesting "science experiment".
Swap out a component at a time until you find what's holding it back.
Was there really one thing that was a major contributor, or was it really just a few things that each played a part in the less than expected/desired results?
I will say this, from my perspective....... I don't see anything glaringly wrong with it "on paper", and would have also been looking for better results myself.
This is slightly off topic, but this thread made me think of it again......
I'm really surprised no head company, even someone like Pro Comp has offered up a new aluminum W2 head.
All the support products already exist..... Intakes, rockers, headers.
Just cast the long valve W2's in aluminum. Use 11/32 bronze guides, come up with a more modern closed chamber........ I would think they would sell pretty well.
They're a known quantity........ They work.
Anyway....... That's just a thought from a BB guy. I wish they would also.. I would be buying a set today to get the iron ones off.. I sure wouldnt mind a 40# weight loss 
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Re: how accurate is Hughes cfm charts?
[Re: fast68plymouth]
#2308583
05/21/17 04:38 PM
05/21/17 04:38 PM
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Joined: Sep 2014
Posts: 4,457
Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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That other motor would have certainly made for an interesting "science experiment".
Swap out a component at a time until you find what's holding it back.
Was there really one thing that was a major contributor, or was it really just a few things that each played a part in the less than expected/desired results?
I will say this, from my perspective....... I don't see anything glaringly wrong with it "on paper", and would have also been looking for better results myself.
This is slightly off topic, but this thread made me think of it again......
I'm really surprised no head company, even someone like Pro Comp has offered up a new aluminum W2 head.
All the support products already exist..... Intakes, rockers, headers.
Just cast the long valve W2's in aluminum. Use 11/32 bronze guides, come up with a more modern closed chamber........ I would think they would sell pretty well.
They're a known quantity........ They work.
Anyway....... That's just a thought from a BB guy. The problem is most guys never wanted to buy the valve train and cried about what it costs. Those guys think they can make power with a stock rocker. Will never happen.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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