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Old 04-28-2012, 08:45 PM
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Cast Rotating Assembly

Hey guys how much power can a cast iron rotating assembly handle??

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Old 04-28-2012, 09:03 PM
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600-700 HP......but only once!
Need a little more info.
What KIND of engine.....blown...turbo charged......racing....street use?
6sally6
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Old 04-29-2012, 12:27 PM
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I had a cast steel crank in my old set up and it dyno'd out to 512hp but I never spun it past 6200rpm (385cid). I had it in the car for about 2yrs with around 40 1/4mi passes on it. When I tore it down to upgrade it still looked brand new, I sold the whole rotating assy for 500.00
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Old 04-29-2012, 12:28 PM
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It would be for street use. Maybe take to the drag strip once in a while.
It is a chevy 350 64 cc heads. 2.02 int valves. 550 lift cam. performer intake. 750 cfm carb.
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Old 04-29-2012, 12:33 PM
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I still have to put the engine together. I would like to have around 500 HP but I know what I have wont make that much HP. What setup did you have??
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Old 04-29-2012, 04:36 PM
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350 block, bored over .040", Scat 9000 cast steel crank, Scat 4340 5.7" rods, Keith Black 18cc D dished hyper pistons (385cid), Howards solid f/t cam: 240/250 @ .050, 282/290 advertised, .525/.525" 110LSA, 106CL, howards billet alm 1.6 rockers on intake and 1.5 rockers on exhaust (corrected lift .560/.525"), DART iron eagle platinum 200cc heads with a decent amount of machine work done to them, milled down to 58cc combustion chambers (10.4:1 CR), tight .038" quench, performer rpm intake with the plenum divider milled down 1/2" with 1" spacer, 750 double pumper rebuilt with a holley trick kit (dual 50cc pumps) with some mild shaving of the butterfly rails. hooker super comp 1 3/4" headers, 60K HEI distributor...

ran on pump gas (93 octane), i had it professionaly tested and tuned (broken in) and they came out with 512hp/492tq.
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Old 04-30-2012, 08:10 PM
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I remember in one of David Vizard's books he stated he uses cast scat 9000 series cranks in nitrous motor in the 700hp range. I don't have the book with me so I can't quote it exactly but it was somewhere in that range for a sbc.
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