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Originally Posted by zeke
(Post 3674664)
I read this on a site somewhere it could of even been on here:
"these 572's so far they make 780hp @5900 & 786ft pounds torque @4700 super flow #'s ....dart pro ones 336cnc heads,dart intake, big m block ,top dollar rotating assbly, and a .612, .612 valve lift with 256in & 258ex @.050 on a 114 CL hyd roller." The reason I ask is Im in the middle of a 582 build and expecting 725hp with brodix bb-3 cnc'd 365 runners, flat top pistons, the cam will be .258int & 262 ex @.050 with .612 lift on both and 114 sep. Where Im at is 1400ft elevation and around 70-80f temps on an average boating day. |
this is a dyno video of a local guy here Mark at MER that built this motor. Its a 572. Lower compression on 89
https://www.youtube.com/watch?v=THTwkuWLpCE there is a separate video of the numbers and AFR i believe. looks to run on the lean side though. Made over 800HP though N/A |
Nothing earth shattering about those numbers at all. Be interesting to know the compression and what exhaust he has. Offshorexcursion's 572's made 800 on the dyno, 750 with his headers.
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Originally Posted by horsepower1
(Post 4392660)
Nothing earth shattering about those numbers at all. Be interesting to know the compression and what exhaust he has. Offshorexcursion's 572's made 800 on the dyno, 750 with his headers.
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Actually i believe it was 760hp at 6000 thru the cmi headers on offshoreexcursions 572s. And i do have copies of the dyno sheets at home.
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It's interesting reading old posts.. I still think the torque is a bit high on the example engine, but after using a few sets of the Darts over the years, and dynoing a couple hundred more motors since that post, it's probably not quite as far off as I obviously thought it was back then. Bogus may have been a bit strong. lol
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Originally Posted by brian41
(Post 4392675)
Very impressive ! Are there any dyno sheets to show these numbers and why such a change with headers?
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My 572 made over 1800hp...a few pounds of boost helped the Dart 360's.:)
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Originally Posted by check300
(Post 4392707)
My 572 made over 1800hp...a few pounds of boost helped the Dart 360's.:)
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my pfaffs made 750 seemed to be on par for the performance I received .. I see a lot of combos stating comparible numbers
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