Dynoing motor end of week. How much HP

Old 01-04-2011, 02:49 AM
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blowninjected540
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Default Dynoing motor end of week. How much HP

I was wondering hom much HP will come from a 540ci motor with 12 to 1 comp. set of dart 380s that flow 420 cfm, with a 871 BDS supercharger running 11 lbs of boost with enderle injection on alcohol, 810 lift cam 7-4 swap. Any guesses :?: :?:
will be dynoing on friday or monday.
Just trying to get an idea what to expect the computer dyno;s that I look up give me such a wide rangs of HP numbers.
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Old 01-04-2011, 03:03 AM
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JEFF69Z28
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ALOT!!
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Old 01-04-2011, 05:18 AM
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TS1955
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Depending on what stage blower you have, I would say in the 1300 - 1400 HP range would be my guess.

TS1955
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Old 01-04-2011, 07:18 AM
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blowninjected540
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Blower is a stage 3. Hard case w/ teflon stripping
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Old 01-04-2011, 10:15 AM
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zipper06
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Have you already had this motor running? i think it might be hard to get 11 lb's boost out of an 871 on that big of a motor and heads without running 25 to 30% overdrive unless it's a high helix blower. But if you can i would think anywhere between 1150 and 1300. I hope you have down nozzles on it.

JMO

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Old 01-04-2011, 10:46 AM
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blowninjected540
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Originally Posted by zipper06
Have you already had this motor running? i think it might be hard to get 11 lb's boost out of an 871 on that big of a motor and heads without running 25 to 30% overdrive unless it's a high helix blower. But if you can i would think anywhere between 1150 and 1300. I hope you have down nozzles on it.

JMO

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Yes had 11lbs at +10% overdriven with this motor last year with less compression But hard to start. reason for going to 12 to 1 compression. Yes to the down nozzles.

Thanks Zip
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Old 01-09-2011, 03:43 AM
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starting problems are always improper barrel valve setting, too lean most of the time. pulling the fuel shut off valve and running it out of fuel, too much cranking to get it back up to pressure, or just some type of problem with the fuel system itself. down nozzles are way better for tuning each cylinder when you have egts. I tend to set the barrel valve around 30% and keep leaning it out until a have a dead spot or hesitation, then I go back 2-3 flats depending on engine idle temp. when the engine will idle all day @ 160, you have got it right and most likely will start great 1200-1300 hp should be feasible
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Old 01-13-2011, 03:31 PM
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blowninjected540
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Hear are the results !!! 1347 Hp at 7200 rpm and 1072 foot pounds of torgue at 5200 rpm. 540 ci motor with 871 supercharger 11 ponds of boost.
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Old 01-13-2011, 05:01 PM
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TheRabbit
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Originally Posted by blowninjected540
Hear are the results !!! 1347 Hp at 7200 rpm and 1072 foot pounds of torgue at 5200 rpm. 540 ci motor with 871 supercharger 11 ponds of boost.
SWEEEEEET! If you're scared of 'em let me know. I'll use 'em all for you!
You know you gotta give us a video when you take it to the track!
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Old 01-13-2011, 05:25 PM
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AND THATS ON PUMP GAS :lol: :lol: :lol: :lol:
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