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#2455059 - 02/21/18 10:33 AM Re: Guess my Dyno numbers [Re: 10sec440]
rb446 Offline
enthusiast

Registered: 10/17/15
Posts: 259
Loc: UK
I can't see it making much more than 600fwhp, not enough head/small cam for them cubes to make mid to upper 600's in my opnion.

My mates 440 Dart with 12.7:1, Eddy std port MCH 325cfm heads, DC.590 solid purple cam, 1050 Dom., Victor int...just managed to hit the 600fwhp mark according to best mph/weight. and that cam was done at 6600rpm, car would slow if he shifted it over 6400 through the gears.
_________________________
1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987

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#2455074 - 02/21/18 10:56 AM Re: Guess my Dyno numbers [Re: 10sec440]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11210
Loc: So. Burlington, Vt.
The latest generation 440-1's come with CNC'd chambers, and with the right valve job and bowl work can flow quite well.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

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#2455087 - 02/21/18 11:27 AM Re: Guess my Dyno numbers [Re: Von]
an8sec70cuda Online   content
I Live Here

Registered: 01/19/03
Posts: 10828
Loc: Marion, South Carolina [><]
Originally Posted By Von
Whose dyno?? On a few dynos quoted on here, I'm sure it would show over 800...

iagree LOL
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CHIP
'70 hemicuda...8.91 at 150.5 mph street car...Mopar Action feature Dec. '14
'69 road runner 446" w/ Indy SRs
'69 road runner 440-6, 4 speed...Dad's ride
'71 Demon 340 resto project
'01 Ram 2500 QCSB 4x4 Cummins...toy hauler
'16 Grand Caravan SXT...baby hauler

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#2455089 - 02/21/18 11:35 AM Re: Guess my Dyno numbers [Re: an8sec70cuda]
pittsburghracer Offline
Slowride

Registered: 02/02/05
Posts: 13311
Loc: PA.
I was thinking more like 1000 horsepower whistling
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1970 Duster
Edelbrock headed 408
6.143@110.89 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
6.001@113.27mph
9.44@138.23

Untitled by John Cadamore, on Flickr





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#2455107 - 02/21/18 12:09 PM Re: Guess my Dyno numbers [Re: fast68plymouth]
csk Offline
super stock

Registered: 08/13/11
Posts: 1135
Loc: KATY TEXAS
Originally Posted By fast68plymouth
The latest generation 440-1's come with CNC'd chambers, and with the right valve job and bowl work can flow quite well.


Do you have any of those #'s smile , I based my guess on older none ported 440-1's & the low lift cam.
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68 Charger daily driver 512 low deck, 4050lb,11.33 @ 121.1, 1750DA
in full street car trim.

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#2455122 - 02/21/18 12:41 PM Re: Guess my Dyno numbers [Re: 10sec440]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11210
Loc: So. Burlington, Vt.
For sure the low-ish lift of the cam(for this combo) doesn't play into the -1's attributes, especially earlier ones.

The last set I did(with cnc'd chambers) flowed 297@.600 ootb, and about 340@.600 after proper prep.

I feel like the 10.5cr is a bit low for the basic combo as well.

If the heads were similar to the last ones I did, and I had it on our dyno here, I'd be looking to be in the 650+ range........ It is a 511 after all.
I'd have used 1.6 rockers for a cam like that in this type of build.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

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#2455125 - 02/21/18 12:53 PM Re: Guess my Dyno numbers [Re: fast68plymouth]
csk Offline
super stock

Registered: 08/13/11
Posts: 1135
Loc: KATY TEXAS
Thanks Dwayne for your valuable input !!!
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68 Charger daily driver 512 low deck, 4050lb,11.33 @ 121.1, 1750DA
in full street car trim.

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#2455134 - 02/21/18 01:05 PM Re: Guess my Dyno numbers [Re: an8sec70cuda]
6PKRTSE Online   content
master

Registered: 01/29/04
Posts: 3442
Loc: Motor City
Originally Posted By an8sec70cuda
Originally Posted By Von
Whose dyno?? On a few dynos quoted on here, I'm sure it would show over 800...

iagree LOL


We have (42) SAE calibrated engine dyno's. Our Dyno's have to be calibrated because of all of the OEM prototype developement & production work we do so our Dyno's are usually about 15% less than the average Joe. Believe me, you walk into most single dyno engine shops & say you want to make approx 800 HP they can make it make the number pretty easily when it is probably making more like 680ish HP.
_________________________
1970 Charger R/T S.E. 440 Six Pack
1970 CHALLENGER R/T, 25.5 Cert, Big Inch Alum 16 plug HEMI twin turbo.
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner.
1996 2500 RAM 488 V-10 4X4.
2012 Challenger R/T Classic.

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#2455147 - 02/21/18 01:24 PM Re: Guess my Dyno numbers [Re: 10sec440]
Al_Alguire Offline


Registered: 01/20/03
Posts: 16810
Loc: Las Vegas
Cant see that combo being anything much over 600hp for sure of if it even got there. But as been pointed out dynos are dynos and not all of them spit out the most accurate of results for sure. Id say at Mountain View that combo would struggle to see 575, that's where I have my most recent dyno experience.
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#2455165 - 02/21/18 02:07 PM Re: Guess my Dyno numbers [Re: 10sec440]
rb446 Offline
enthusiast

Registered: 10/17/15
Posts: 259
Loc: UK
I guess whatever numbers that dyno throws out, whats more important is knowing where the power is being made with the combo and then perhaps some gearing changes may/may not be in order.

As a guide, with an on track 620fwhp/3400lbs the ticket would look something like this>
60 Foot E.T. : 1.43
1/8 Mile E.T. : 6.48
1/8 Mile Trap Speed : 104.88
1/4 Mile E.T. : 10.27
1/4 Mile Trap Speed : 130
with it in the teens? if it 60's better than shown above.
according to my calcs.


Edited by rb446 (02/21/18 02:12 PM)
_________________________
1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987

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#2455175 - 02/21/18 02:30 PM Re: Guess my Dyno numbers [Re: 10sec440]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11210
Loc: So. Burlington, Vt.
Since its a Comp cam, I'd be interested to know what the lobe numbers are....... And I assume you're running 1.5 rockers??
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

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#2455388 - 02/21/18 09:59 PM Re: Guess my Dyno numbers [Re: 10sec440]
Sport440 Offline
master

Registered: 01/20/03
Posts: 6585
Loc: Canton, Ohio
Originally Posted By 10sec440
Sorry, typo it was late. 265 and 270 @ .050
I intend to spin it to 6500-7000.
Thanks.


Be lucky to break 600 hp, probably more like 575,???

That cam @ 265 intake is smaller them the MP 590 @ 271 @ .05 you were using. But with the new engine you will be making a lot of torque. To make HP you need to spin them a bit. Your not going to be able to spin that new engine very high in its hp band with that small of cam. It will be done by 6000 rpm. Typical 500" motors with your comp can hit around 600 HP with the mp 590, your using a even Smaller cam.

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#2455390 - 02/21/18 10:04 PM Re: Guess my Dyno numbers [Re: 10sec440]
ozymaxwedge Offline
super stock

Registered: 09/04/15
Posts: 1012
Loc: Australia
New cam smile
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1963 Plymouth Max Wedge
1971 Barracuda

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#2455512 - 02/22/18 07:55 AM Re: Guess my Dyno numbers [Re: 10sec440]
gregsdart Offline
master

Registered: 01/21/03
Posts: 8337
Loc: Frostbitefalls (Rocky&Bullwink...
I am guessing your goal might be 10.01 et?
Just a thought, has anyone had good luck with 1.7 ratio rockers and beehive springs? That would get you .630 + net lift on the intakes, and raise the net lift everywhere, which i would think should be well worth the trouble, and cheap power to boot.


Edited by gregsdart (02/22/18 07:56 AM)
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Educated at SHK U
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528 cubic inch alky injected 440-1 wedge, 3055 race weight.
8.779 at 153.16 mph. 1.289 60 ft. density altitude 1617 feet. Best 60 ft 1.24

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#2455585 - 02/22/18 10:46 AM Re: Guess my Dyno numbers [Re: 10sec440]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11210
Loc: So. Burlington, Vt.
I doubt the power increase from a ratio swap would corolate to the $1100 price tag.

If I had $1100 to throw at it, it would be on a roller cam, lifters, and springs.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

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#2458435 - 02/27/18 12:42 PM Re: Guess my Dyno numbers [Re: fast68plymouth]
416challenger Offline
enthusiast

Registered: 12/28/04
Posts: 348
Loc: New Braunfels, TX
10sec440- Were you able to get it on the dyno? Just curious of the outcome.

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#2458469 - 02/27/18 02:02 PM Re: Guess my Dyno numbers [Re: 10sec440]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11210
Loc: So. Burlington, Vt.
With as widely varying as the guesses were.......someone should have been close.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

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#2458505 - 02/27/18 03:06 PM Re: Guess my Dyno numbers [Re: fast68plymouth]
6PKRTSE Online   content
master

Registered: 01/29/04
Posts: 3442
Loc: Motor City
We always do this at work with alot of the race engines we build. Sometimes it's $1.00 per person per guess, sometimes $5.00 per guess. Winner gets the pot. We did this on my Hemi when we dyno'd it. So many were so close but it did make more than everyone was expecting.
_________________________
1970 Charger R/T S.E. 440 Six Pack
1970 CHALLENGER R/T, 25.5 Cert, Big Inch Alum 16 plug HEMI twin turbo.
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner.
1996 2500 RAM 488 V-10 4X4.
2012 Challenger R/T Classic.

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#2458779 - 02/28/18 09:09 AM Re: Guess my Dyno numbers [Re: 10sec440]
Chuck@Best_Machine Offline


Registered: 01/21/03
Posts: 961
Loc: Farmington Hills, Mich
Here is a engine we just did. Its a 496 with the same cam and compression on pump gas. It has Max Wedge Port SR Heads as received from Indy with NO porting, just our valve job. It has a 440-2 Intake and a 950 Quick Fuel.

With the 440-1 Heads and the 400-3 Intake with a 4500 Carb it will make more than this with out a doubt.


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#2458910 - 02/28/18 12:14 PM Re: Guess my Dyno numbers [Re: Chuck@Best_Machine]
Thumperdart Offline


Registered: 07/12/04
Posts: 18864
Loc: State of confusion
Why so lean...........
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