Re: 557 BBM Dyno Pull
[Re: AndyF]
#3134740
04/03/23 01:03 PM
04/03/23 01:03 PM
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Joined: Jan 2003
Posts: 4,057 Shelby Twp. Mi
HardcoreB
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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. Exactly my point of mentioning Frans motor with the different pieces than it was dynoed with. Those pieces could add the '50HP' that it appears to be lacking from your dyno. Again to me this is validation. And that is not considering that it is well-sorted out in the car so, there could be even more.
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Re: 557 BBM Dyno Pull
[Re: dvw]
#3134748
04/03/23 01:21 PM
04/03/23 01:21 PM
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Joined: Jan 2003
Posts: 14,504 So. Burlington, Vt.
fast68plymouth
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The Moroso chart shows 980hp for 157mph and 3300lbs.
That’s uncorrected, as it sits in the car.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 557 BBM Dyno Pull
[Re: fast68plymouth]
#3134786
04/03/23 02:24 PM
04/03/23 02:24 PM
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Joined: Jan 2003
Posts: 4,057 Shelby Twp. Mi
HardcoreB
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The Moroso chart shows 980hp for 157mph and 3300lbs.
That’s uncorrected, as it sits in the car. That's about what Wallace said but i was fudging the numbers to allow for the weight possibly being 3200ish and the DA correcting below sea level. Stout is the word for me.
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Re: 557 BBM Dyno Pull
[Re: HardcoreB]
#3134790
04/03/23 02:39 PM
04/03/23 02:39 PM
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Joined: Jan 2003
Posts: 14,504 So. Burlington, Vt.
fast68plymouth
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There is no doubt the car puts a great number up on the board.......however I am doubtful it would make 861ft/lbs on the dyno here. At 557”, that’s 1.545/ci........ which I have never seen on the dyno here, N/A, on gasoline.
I’m not saying it’s “impossible”, but I am skeptical.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 557 BBM Dyno Pull
[Re: fast68plymouth]
#3134795
04/03/23 02:58 PM
04/03/23 02:58 PM
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JERICOGTX
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There is no doubt the car puts a great number up on the board.......however I am doubtful it would make 861ft/lbs on the dyno here. At 557”, that’s 1.545/ci........ which I have never seen on the dyno here, N/A, on gasoline.
I’m not saying it’s “impossible”, but I am skeptical. Same Bore and Stroke as my engine, yet it makes 130trq more than mine, and the combos aren't THAT different...
69 GTX
68 Road Runner
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Re: 557 BBM Dyno Pull
[Re: Streetwize]
#3134806
04/03/23 03:26 PM
04/03/23 03:26 PM
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Joined: Jan 2003
Posts: 19,372 Las Vegas
Al_Alguire
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Be curious to know the actual weight of the car for sure. If it was trult ever a Super Stocker in the last couple of decades you would be surprised wat how light they can get. As for racing at MIssion it is as good as air gets on the west coast. Barometer is usually always at over 30 and always cool. I have seen DA in the summer there in the -300'-400' range. It is THE place for hero runs on the west coast for sure.
As for the 4.1 per cfm deal, that's quite antiquated way of assessing CFM these days. I have three engines of my own that are well outside that by quite a bit and none of them are anything special.
As for the dyno numbers as I always say it is just a tool. The car and combo certainly run well and thats undeniable. I am sure it is a very well sorted out combo and by the looks of the shop the owner has been a long time SS guy, So I am sure he gets everything out of a car.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 557 BBM Dyno Pull
[Re: Al_Alguire]
#3134812
04/03/23 03:39 PM
04/03/23 03:39 PM
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Joined: Jan 2003
Posts: 14,504 So. Burlington, Vt.
fast68plymouth
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The car was run in SS/D with a hemi in it previously(the car is a natural E car). The weight break for SS/D is 7.50, and the factored HP is 455. So, 455 x 7.50 = 3412.5, plus 170 for driver allowance, and you’re at 3582.5 minimum in D(in E the min weight with driver would be 3810).
3300-3400 sounds pretty reasonable to me for swapping in an aluminum headed wedge.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 557 BBM Dyno Pull
[Re: Streetwize]
#3134841
04/03/23 06:09 PM
04/03/23 06:09 PM
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Joined: Jan 2003
Posts: 14,504 So. Burlington, Vt.
fast68plymouth
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From what I’ve seen, 350-360 cfm Indy heads on a high CR stroker build are a pretty straightforward way to get to 800+ HP. Using the 4.1 theory shows that’s only 700hp worth of flow.
That’s more like what you’d see from a hot street/strip type of build.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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