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Re: 557 BBM Dyno Pull
[Re: RustyM]
#3134646
04/03/23 06:03 AM
04/03/23 06:03 AM
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Joined: Jan 2003
Posts: 10,022
MN
JERICOGTX
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,022
MN
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861trq, out of 557ci NA almost seems impossible...
69 GTX
68 Road Runner
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Re: 557 BBM Dyno Pull
[Re: JERICOGTX]
#3134673
04/03/23 09:44 AM
04/03/23 09:44 AM
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Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
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Not to be a Debbie Downer but I wouldn't think 1000 horsepower worth of N/A flow would even move through a Victor or similar MW head, The general target (within about 10%) rule of thumb for an efficient race engine is Intake port flow is ~4.1 cfm per HP per cylinder. It's not a "end all" formula but it certainly will put you in very close in the ball park as far as N/A head HP potential.
so for a very good but "achievable 380CFM MW head, 380/4.1 ~ 93hp x 8 = 744 HP so maybe (+ 10%) 825 MAX, so how much can a Victor flow at MAX? maybe 400-410? That would be 800 to 880 ish.
So I would expect about 880 hp at most would be the max you could get....without a moved centerline wedge head like a B1. I'd love to see the heads and intake on that puppy if indeed that is the real number. I'm sure the vaccuum pump helps but still that a lot of molecules to burn
Last edited by Streetwize; 04/03/23 09:50 AM.
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Re: 557 BBM Dyno Pull
[Re: HardcoreB]
#3134679
04/03/23 09:57 AM
04/03/23 09:57 AM
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Joined: Jan 2003
Posts: 10,022
MN
JERICOGTX
I Live Here
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I Live Here
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Posts: 10,022
MN
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I remember seeing this video years ago and not believing the #s. There is another video of his "peter willie" Cuda on Youtube and i saw a few 156 and then a 157+ MPH passes. This was supposed to be a 'lesser' HP version of this motor, and in context, I think it's believable. At least in the ways I correlate HP to track performance. I'd WAG this Cuda has to be at least 3200lbs with driver? Peter's Cuda has a chassis that is legal for Super Stock, it just needs a Shaker hood, instead of the 6 Pack scoop. It's probably closer to 3400lbs, with driver.
69 GTX
68 Road Runner
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Re: 557 BBM Dyno Pull
[Re: JERICOGTX]
#3134684
04/03/23 10:16 AM
04/03/23 10:16 AM
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Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
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I remember seeing this video years ago and not believing the #s. There is another video of his "peter willie" Cuda on Youtube and i saw a few 156 and then a 157+ MPH passes. This was supposed to be a 'lesser' HP version of this motor, and in context, I think it's believable. At least in the ways I correlate HP to track performance. I'd WAG this Cuda has to be at least 3200lbs with driver? Peter's Cuda has a chassis that is legal for Super Stock, it just needs a Shaker hood, instead of the 6 Pack scoop. It's probably closer to 3400lbs, with driver. Thank you! Respectfully Streetwise, what would you estimate the 'older/lesser HP' to be considering the MPH and weight?
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Re: 557 BBM Dyno Pull
[Re: Streetwize]
#3134702
04/03/23 11:06 AM
04/03/23 11:06 AM
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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Not to be a Debbie Downer but I wouldn't think 1000 horsepower worth of N/A flow would even move through a Victor or similar MW head, The general target (within about 10%) rule of thumb for an efficient race engine is Intake port flow is ~4.1 cfm per HP per cylinder. It's not a "end all" formula but it certainly will put you in very close in the ball park as far as N/A head HP potential.
so for a very good but "achievable 380CFM MW head, 380/4.1 ~ 93hp x 8 = 744 HP so maybe (+ 10%) 825 MAX, so how much can a Victor flow at MAX? maybe 400-410? That would be 800 to 880 ish.
So I would expect about 880 hp at most would be the max you could get....without a moved centerline wedge head like a B1. I'd love to see the heads and intake on that puppy if indeed that is the real number. I'm sure the vaccuum pump helps but still that a lot of molecules to burn
a lot depends on the combo. Maxed out 440-1 heads, 15/1 compression, .868 lift roller, methanol fuel injection, thin rings, very good headers, coated pistons, 550cubes, i made 926 hp and track performance was there. But 1,000?
Last edited by gregsdart; 04/03/23 11:06 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 557 BBM Dyno Pull
[Re: gregsdart]
#3134703
04/03/23 11:18 AM
04/03/23 11:18 AM
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Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
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Greg has another example of a GOOD HP low-port motor. Dwayne did a 572 that wasn't fancy years ago and it showed over 900HP. DVW is over 900. Chuck did a B1BS stock block motor in 2005? made over 875 on dyno and in car. Scott Brown has built -1 motors over 900+. AndyF made over 900 with an SR head on dyno. I feel that in consideration of the changes made to that motor based on what it runs in the car is representative. Few are willing to go thru the expense of running a big cam and I think that opens the door to more power that you typically don't see. Q fuel adds some power as well.
Last edited by HardcoreB; 04/03/23 11:21 AM.
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Re: 557 BBM Dyno Pull
[Re: HardcoreB]
#3134711
04/03/23 11:56 AM
04/03/23 11:56 AM
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Joined: Jan 2003
Posts: 31,028
Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,028
Oregon
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I did push my 514 over 900 hp a few times with EZ heads. They were heavily reworked EZ heads, but still a low port, non-moved centerline type of head. However, I was using custom built dyno headers as well as a dry sump, Jesel belt drive distributor, a high dollar intake manifold, high dollar rocker arms, special race fuel, etc.
The engine in this video has passenger car headers on it. I'm not sure what is going on in the video, but I just don't see how a non-power adder engine is going to make 1000 hp with that set of headers and Victor heads.
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Re: 557 BBM Dyno Pull
[Re: HardcoreB]
#3134715
04/03/23 12:04 PM
04/03/23 12:04 PM
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Joined: Jan 2003
Posts: 10,022
MN
JERICOGTX
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,022
MN
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I remember seeing this video years ago and not believing the #s. There is another video of his "peter willie" Cuda on Youtube and i saw a few 156 and then a 157+ MPH passes. This was supposed to be a 'lesser' HP version of this motor, and in context, I think it's believable. At least in the ways I correlate HP to track performance. I'd WAG this Cuda has to be at least 3200lbs with driver? Peter's Cuda has a chassis that is legal for Super Stock, it just needs a Shaker hood, instead of the 6 Pack scoop. It's probably closer to 3400lbs, with driver. Thank you! Respectfully Streetwise, what would you estimate the 'older/lesser HP' to be considering the MPH and weight? Another thing to consider, is Peter races at Mission Raceway in the Pacific Northwest. I believe that track is near sea level.
69 GTX
68 Road Runner
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Re: 557 BBM Dyno Pull
[Re: AndyF]
#3134717
04/03/23 12:06 PM
04/03/23 12:06 PM
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Joined: Jan 2003
Posts: 8,165
Plymouth, MI
Blusmbl
master
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master
Joined: Jan 2003
Posts: 8,165
Plymouth, MI
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They're at sea level and the day they dynoed the motor it was in the low 40's for air temp. Correction factors can only do so much to bring that back to standard temp and pressure. It's gotta be up 15% on power compared to a normal day here in the midwest, as an example.
'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
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Re: 557 BBM Dyno Pull
[Re: JERICOGTX]
#3134737
04/03/23 12:55 PM
04/03/23 12:55 PM
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Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
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I remember seeing this video years ago and not believing the #s. There is another video of his "peter willie" Cuda on Youtube and i saw a few 156 and then a 157+ MPH passes. This was supposed to be a 'lesser' HP version of this motor, and in context, I think it's believable. At least in the ways I correlate HP to track performance. I'd WAG this Cuda has to be at least 3200lbs with driver? Peter's Cuda has a chassis that is legal for Super Stock, it just needs a Shaker hood, instead of the 6 Pack scoop. It's probably closer to 3400lbs, with driver. Thank you! Respectfully Streetwise, what would you estimate the 'older/lesser HP' to be considering the MPH and weight? Another thing to consider, is Peter races at Mission Raceway in the Pacific Northwest. I believe that track is near sea level. Yessir...this was one thing i factored into my consideration way back when I saw the videos. Has the car run any better? Those don't look like 'perfect' runs to me bouncing and spinning. I also saw an 8.58 ET so that would hint that there is more to be had. Manuals typically MPH better than autos ad their ET doesn't reflect it typically. Wallace calls the old motor about 925 OR SO. As stated, we don't know the air on those days and who's saying the combo is sorted out completely IN THE CAR. I'm saying that it's probable his numbers are 'close-enough' for me to believe.
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