Re: Recipe for 700hp six pack 440 or bigger-
[Re: 70BIRD]
#2284091
04/07/17 06:53 PM
04/07/17 06:53 PM
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Joined: Mar 2005
Posts: 1,581 N/E, Michigan
RATTRAP
pro stock
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pro stock
Joined: Mar 2005
Posts: 1,581
N/E, Michigan
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The intake had a stage II porting done by Hughes .
Paul I did not think there was enough material for stage II porting on any six pack intakes with out modifying the runners and adding material on the top side of the runners for the larger ports.
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: 72demon416]
#2284119
04/07/17 08:00 PM
04/07/17 08:00 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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I put a low deck (400 block) 6 pack pump gas stroker motor together using a stock unported Eddy low deck six pack intake with stock type 440 carbs, the motor was 517 C.I. (4.375 bore x 4.300 stroke) with 10.29 to 1 compression with a set of Eddy RPM heads CNC ported by MCH, Comp Cams custom ground solid roller cam that was 260@.050 on the intake with .420 lobe lift and 266 @.050 on the exhaust with .409 lobe lift, Harland Sharp 1.65 ratio roller rockers that netted .700 at the retainers with checking springs. This motor combination ran a bunch of 10.30 at 127.6 MPH through the 3.0 inch exhaust system on with a stock 6 pack air cleaner with dual stacked stock 6 pack Fram air cleaner elements in my 1971 Duster that weighed 3450 lbs. with me in it IHTHs
Last edited by Cab_Burge; 04/07/17 08:02 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: 72demon416]
#2284124
04/07/17 08:14 PM
04/07/17 08:14 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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I shifted at or above 7000 RPM after testing a bunch different shift RPM I dyno tested that motor several different times on several different engine dynos, two different DTS and s Studka dyno, that motor made peak HP at 5500 and 5600 RPM with the six pack and it made peak torque at 4500 and 4600 RPM, depending on which dyno I tried shifting it at 5500 RPM and then 6000 RPM, it ran faster at 6000 RPM so I then tried 6500, then 7000 and then 7500 RPM, it ran quicker and faster the higher I shifted that stupid motor I got scared of it above 7500 RPM so I decided 7000 to 7300 RPM was good enough for me It would repeat ET real well at those RPMs That was a good car, lots of fun, especially on the street
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: GY3]
#2284188
04/07/17 10:39 PM
04/07/17 10:39 PM
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Superfreak
Unregistered
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Superfreak
Unregistered
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I REALLY wanted to run a crossram on my '63 for the "look" more than anything. After seeing how it simply wasn't a good choice for my goals, I ended up going with a single 4 bbl.
The one concession I made was for everything to fit under the stock, flat hood. Single carbs are too passé Build it BIG!
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: 72demon416]
#2284373
04/08/17 01:12 PM
04/08/17 01:12 PM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Best et 6.27 at 3600+ pounds Around 720hp. Just a smidge to tall for a shaker. Drove this car everywhere
Last edited by sixpackgut; 04/08/17 01:14 PM.
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: sixpackgut]
#2284402
04/08/17 01:55 PM
04/08/17 01:55 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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Best et 6.27 at 3600+ pounds Around 720hp. Just a smidge to tall for a shaker. Drove this car everywhere OP, this is the first tunnel ram six pack intake I've ever seen Mechanical carbs also Not a Weiand two piece SS or stock Eddy dual plane OEM intake
Last edited by Cab_Burge; 04/08/17 01:55 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: 70BIRD]
#2284466
04/08/17 04:44 PM
04/08/17 04:44 PM
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Joined: May 2009
Posts: 512 Temperance, MI
68 HEMI GTS
mopar
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mopar
Joined: May 2009
Posts: 512
Temperance, MI
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I just pulled out the invoice from Hughes and it says Stage II porting. From the outside there was definitely no welding or material added.
Paul did you ever put any passes on this combo?
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780# 69 Roadrunner 511 six pack 10.92 drive to track street car
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: 72demon416]
#2284546
04/08/17 08:44 PM
04/08/17 08:44 PM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Thanks Paul! Ray- what was the test of your combo that it made 720? 493. EZ heads MW port. Roller cam .630 265. 12-1. 185 cyl pressure. 9" converter. 3.55s with 28 or 4.10s with 30 tires. I had 3 500 cfm carbs. Center carb was 4412 i modded
Last edited by sixpackgut; 04/08/17 08:46 PM.
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Recipe for 700hp six pack 440 or bigger-
[Re: sixpackgut]
#2284557
04/08/17 09:14 PM
04/08/17 09:14 PM
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Joined: Jun 2004
Posts: 1,496 Sask, Can.
72demon416
OP
pro stock
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OP
pro stock
Joined: Jun 2004
Posts: 1,496
Sask, Can.
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Thanks Ray, looks like a nice combo. So...this may sound retarded and I know there will be a myriad of answers but why did you guys choose the heads you chose? I look at the combos that are scattered around the internet and some guys use a Indy EZ, others a SR others a ??? What I mean is why stop there- why not say a 440-1 or larger? Is it that the ports are too large to be a efficient head for this power lever, pure overkill, a big price jump, or that other required parts to go with them becomes a little exotic or ??? I'm just sitting back looking at my original plan and saying why not go 440-1's or big easy with a modman that will fit them with EFI, on something like 570" 11.5-1, and a stick around .700 274-282. What are my plans biggest flaws?
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