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Re: 557 BBM Dyno Pull [Re: HardcoreB] #3134739
04/03/23 01:00 PM
04/03/23 01:00 PM
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Oregon
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AndyF Offline
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The car is fast, no doubt about that. So regardless of the dyno numbers it is a stout combination.

Re: 557 BBM Dyno Pull [Re: AndyF] #3134740
04/03/23 01:03 PM
04/03/23 01:03 PM
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Shelby Twp. Mi
HardcoreB Offline
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Originally Posted by AndyF
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.

Re: 557 BBM Dyno Pull [Re: HardcoreB] #3134741
04/03/23 01:08 PM
04/03/23 01:08 PM
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MI, usa
dvw Offline
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Being a stick might help the mph. And if it truly weighs 3400. It's pretty impressive. Never seen another Victor headed motor run even close to that.The track video shows it runs better than most any BB inline wedge Mopar I've seen period. Centainly much better than mine.
Doug

Re: 557 BBM Dyno Pull [Re: dvw] #3134748
04/03/23 01:21 PM
04/03/23 01:21 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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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
Re: 557 BBM Dyno Pull [Re: fast68plymouth] #3134786
04/03/23 02:24 PM
04/03/23 02:24 PM
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Shelby Twp. Mi
HardcoreB Offline
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Originally Posted by fast68plymouth
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.

Re: 557 BBM Dyno Pull [Re: HardcoreB] #3134790
04/03/23 02:39 PM
04/03/23 02:39 PM
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So. Burlington, Vt.
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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
Re: 557 BBM Dyno Pull [Re: fast68plymouth] #3134795
04/03/23 02:58 PM
04/03/23 02:58 PM
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MN
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Originally Posted by fast68plymouth
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
Re: 557 BBM Dyno Pull [Re: Streetwize] #3134806
04/03/23 03:26 PM
04/03/23 03:26 PM
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Las Vegas
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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"
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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Posts: 14,504
So. Burlington, Vt.
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fast68plymouth Offline
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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
Re: 557 BBM Dyno Pull [Re: Al_Alguire] #3134833
04/03/23 05:45 PM
04/03/23 05:45 PM
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Weddington, N.C.
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Al,

I agree on the 4.1 but for me as far as being outdated but for Mopar's and other wedges it's typically a reasonably good measure of attainable power potential. For me It's always been a good "practical" rule of thumb. Usually someone has a Head in mind

I would say 90-95% of 4.1 is pretty easy to attain (and not break the bank) but Greater than 110% of 4.1...GENERALLY there's a better/bigger head/combo available to get you there for less.


WIZE

World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker!

https://www.youtube.com/watch?v=-mWzLma3YGI

In Car:

https://www.youtube.com/watch?v=PjXcf95e6v0
Re: 557 BBM Dyno Pull [Re: Streetwize] #3134841
04/03/23 06:09 PM
04/03/23 06:09 PM
Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
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fast68plymouth Offline
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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
Re: 557 BBM Dyno Pull [Re: fast68plymouth] #3134882
04/03/23 07:59 PM
04/03/23 07:59 PM
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Oregon
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AndyF Offline
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The EZ heads on my 514 were in the 360 to 365 range on Dwayne's bench and that engine went over 900 hp a few times. Somewhere along the way I stopped trying to correlate cylinder head flow with power output. The two things are loosely correlated but so many other things can upset the apple cart that airflow kind becomes a rough guide at best.

I still don't think I'd ever recommend starting with Victor heads if a customer asked for 1000 hp. Victor heads would not be my first choice, or my second choice or even my third choice for that kind of build.

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