Article where they ran all the MP cams in the same car
#1366661
01/08/13 08:01 PM
01/08/13 08:01 PM
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Joined: Nov 2005
Posts: 808 mckinney texas
shoebox
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Im looking for the story about MP testing all the bb cams in the ssme Car... Changed nothing but the cams and lifters and went faster every Cam? Upto the 590? Where can i see it? Thanks!
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Re: Article where they ran all the MP cams in the same car
[Re: shoebox]
#1366665
01/08/13 09:50 PM
01/08/13 09:50 PM
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Joined: Feb 2007
Posts: 5,080 organ
maximum entropy
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organ
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yep, in the engine manual. it was an 8.5:1 400, or something like that. super low compression, and they said it went faster the bigger the cam, but we know that's always been true.
for what is the good life if not doing things thoughtfully?
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Re: Article where they ran all the MP cams in the same car
[Re: Chris2581]
#1366667
01/08/13 11:26 PM
01/08/13 11:26 PM
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Joined: Apr 2006
Posts: 4,220 West Plains, MO
DrCharles
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My 1982 Direct Connection "B-RB Engine Racing Manual" shows just the 8.5:1 400 in a 3200# (less driver) Duster with 4.30 gears: Stock Hyd 12.35 @ 110.27 Street Hemi 12.17 @ 112.60 .484 11.91 @ 115.30 .509 11.82 @ 116.61 but then later on they show the .509 as "baseline" with the same setup but .05 faster and 2 mph slower (11.77 @ 114.80), then: .528 11.69 @ 115.90 .557 11.55 @ 117.05 .590 11.45 @ 118.00 So it did keep going quicker if not always faster It would have been interesting if they'd kept going beyond anything "reasonable" for an 8.5:1 smogger right up to the .620 (and even the mushroom .654, which is only 4 deg more advertised duration, 316 vs. 312, but .034 more lift)...
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Re: Article where they ran all the MP cams in the same car
[Re: DrCharles]
#1366668
01/09/13 01:07 AM
01/09/13 01:07 AM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
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Quote:
My 1982 Direct Connection "B-RB Engine Racing Manual" shows just the 8.5:1 400 in a 3200# (less driver) Duster with 4.30 gears:
Stock Hyd 12.35 @ 110.27 Street Hemi 12.17 @ 112.60 .484 11.91 @ 115.30 .509 11.82 @ 116.61
but then later on they show the .509 as "baseline" with the same setup but .05 faster and 2 mph slower (11.77 @ 114.80), then:
.528 11.69 @ 115.90 .557 11.55 @ 117.05 .590 11.45 @ 118.00
So it did keep going quicker if not always faster
It would have been interesting if they'd kept going beyond anything "reasonable" for an 8.5:1 smogger right up to the .620 (and even the mushroom .654, which is only 4 deg more advertised duration, 316 vs. 312, but .034 more lift)...
Good job, as these are the same numbers I have also. It should be noted that all ET numbers were with a 400 motor.
As a update, my 440 @ 10.5 comp and 3000# went 10.40,s with the 509 cam.
Another member had his 451 @ 11.1 comp and 3110# went 9.8?,s and better with the 590 cam.
The old MP cams can run the ET, the newer cams can too, but they can be a little more street friendly while running the same et. But a little les friendly on the valvetrain. Only difference IMO
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Re: Article where they ran all the MP cams in the same car
[Re: DrCharles]
#1366671
01/09/13 04:49 PM
01/09/13 04:49 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
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Val-haul-ass... eventually
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Quote:
My 1982 Direct Connection "B-RB Engine Racing Manual" shows just the 8.5:1 400 in a 3200# (less driver) Duster with 4.30 gears:
Stock Hyd 12.35 @ 110.27 Street Hemi 12.17 @ 112.60 .484 11.91 @ 115.30 .509 11.82 @ 116.61
They published that stuff right about the time I was building a new 383 for my '69 Super Bee. Based on all their data, I figured with the .484" cam, a fresh engine and 4.10s that the car would pick up big time from 14.4s @ 99 MPH w/ 3.23s and a seriously little cam. After all the "good stuff, it only ran 14.0s @ 101 MPH... guess it wasn't the cam.
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Re: Article where they ran all the MP cams in the same car
[Re: Dean_Kuzluzski]
#1366674
01/09/13 07:08 PM
01/09/13 07:08 PM
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Joined: Nov 2005
Posts: 808 mckinney texas
shoebox
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Its kiNda funny... The 590 has 106 lobe seperation ---"tighter" Lsa's make more cyl pressure all else being equal----that 8.5cr motor On paper is a terrible match up... But it Worked ! 25 yrs ago or so when i built my first car ( chebby) i put a 292/108 Isky hyd cam in a 8.2 cr 350. It ran like a bat outta hell when it Shouldnt have...no stall no gear. That 400 combo reminded me Of when i was a kid!
Last edited by shoebox; 01/09/13 07:12 PM.
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Re: Article where they ran all the MP cams in the same car
[Re: Thumperdart]
#1366676
01/10/13 02:03 AM
01/10/13 02:03 AM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
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Quote:
Quote:
I believe that 72 duster is the same car that Bill Bagshaw put the Famous 511 horse Car Craft 440 in. That car was basically a backed halfed (or severely narrowed) well-sorted race car.....no wonder it hooked and ran the ET'd it did
Thank you....... Makes a difference for sure.
Bagshaws car was a 74 Duster. The DC car and MP car was a 75 or so the article states.
There were indeed two different combos from the DC tests and the Mopar engine manuel tests.
DC tests installed the cams straight up and the MP tests installed every cam 2* advanced. The slick size also was different, one a 9" slick the other a 10" One had stock steel heads the other stage 4,s One weighed 3200# the other 3050#
These two cars both used a 8.25 rear end, and I doubt they were backhalved with that axel.
Bagshaws car did use 32" slicks so it was semi backhalfed or so I would assume. Bagshaws car weighed 3100# with the 440ci 509/511 HP tests, 10.82 ET.
With Editorial typos, Bagshaw could of ended up with the DC/MP car. The original DC car used a production vert, and I think Bagshaw used a 4500 vert.
Last edited by Sport440; 01/10/13 02:33 AM.
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Re: Article where they ran all the MP cams in the same car
[Re: RobX4406]
#1366680
01/10/13 03:06 PM
01/10/13 03:06 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
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That deal can be very deceiving, that 400 would be a total dog except it had the high stall converter and 4.30 gears to make up for the complete lack of bottom end power. In my opinion neither of those things should be considered street friendly. Put a more street friendly 2000 stall 3.23 gear in it and as proven by the low compression 440 example running low 14s it would not be near that quick. That is where the modern cams have a huge advantage, they can make a low compression motor build enough cylinder pressure and still flow enough air past the valve to make it street friendly AND fast.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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