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#1
03-14-2005, 09:31 AM
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We are having our street 400 dyno and was wondering what you guys think it will end up making for hp and tq. The combo is:
4.155 bore 3.75 stroke 62 heads that flow 240cfm with the RPM intake on 1.75" headers 850 Holley Solid (flat tappet) Comp Cams 246-254 @ .050 and .573-594 lift with 1.65 rockers. Lobe seperation is 106 and center line is 102. So what are your guesses? |
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#2
03-14-2005, 09:31 AM
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We are having our street 400 dyno and was wondering what you guys think it will end up making for hp and tq. The combo is:
4.155 bore 3.75 stroke 62 heads that flow 240cfm with the RPM intake on 1.75" headers 850 Holley Solid (flat tappet) Comp Cams 246-254 @ .050 and .573-594 lift with 1.65 rockers. Lobe seperation is 106 and center line is 102. So what are your guesses? |
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#3
03-14-2005, 09:39 AM
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468/480 torque
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#4
03-14-2005, 09:55 AM
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CR?
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#5
03-14-2005, 10:00 AM
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10.5
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#6
03-14-2005, 10:51 AM
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485 hp/475 ft-lbs
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#7
03-14-2005, 11:00 AM
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What RPM do you guys think the peaks will be at?
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#8
03-14-2005, 12:12 PM
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should peak hp at around 6000-6200
peak torque around 3500 |
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#9
03-14-2005, 03:05 PM
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Any other guesses?
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#10
03-14-2005, 05:28 PM
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Well it made 501hp at 6500 and 472tq at 4400
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#11
03-14-2005, 05:55 PM
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DeskTop Dyno says 522 @ 6500 and 500 ft/lb torque at 5000. Pretty good for a 400. Congrads.
__________________
"For some reason a glaze passes over people's faces when you say "Canada". Maybe we should invade South Dakota or something." 
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#12
03-15-2005, 05:19 AM
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That's cool, 501hp @ 6,500!
That's the kind of thing I want to hear because that just means my engine should be in that range too. 
__________________
Uneasyrider “To find yourself, think for yourself.” ― Socrates “The unexamined life is not worth living.” ― Socrates “Wise men speak because they have something to say; fools because they have to say something.” ― Plato |
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#13
03-15-2005, 06:45 AM
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Cool Slowbird,
I thought that rpm intake and the 240 cfm heads would tame that cam a little more than it did. I bet that is screaming 400! |
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#14
03-15-2005, 07:14 AM
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That is great. I guessed the lower HP because HP is a function of RPM. I didn't think you would turn it that high. If it has aftermarket rods, then turn that thing!
Bryan |
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#15
03-15-2005, 01:40 PM
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It averaged 440.6 ftlbs of torque from 4000 to 6800, peak tq was 472. It also averaged 450.5 hp from 4000 to 6800 rpms. The tq curve is really flat.
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#16
03-15-2005, 03:12 PM
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what kind of dyno were you on?
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#17
03-17-2005, 03:40 AM
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"The tq curve is really flat."
Great numbers. And we constantly hear that narrow LSA's have 'peaky' curves. |
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#18
03-17-2005, 09:23 AM
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It was a SuperFlow dyno i believe. Here are the tq #s
4000 441 4100 455 4200 465 4300 471 4400 473 4500 471 4600 469 4700 467 4800 464 4900 463 5000 460 5100 458 5200 456 5300 454 5400 451 5500 447 5600 442 5700 429 5800 434 5900 431 6000 429 6100 425 6200 421 6300 416 6400 410 6500 405 6600 397 6700 388 6800 377 |
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#19
03-29-2016, 10:08 AM
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Very flat torque curve due to the tight LSA......great numbers.
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#20
03-29-2016, 10:10 AM
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Stout!
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