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Guess the dyno result.. win a prize..

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Old 10-17-2008, 10:15 AM
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547 hp 516 ft lbs...Seems reasonable. what is the compression on the engine??
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Old 10-17-2008, 10:27 AM
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Originally Posted by wzup1000
I had a friend with a very similar setup make 575 at the wheels... so at the flywheel, wouldnt around 700 be about right???
If he made 575 at the wheels out of a 402 with afr 205s, a sub 240 cam and a fast 90, then he was on a happy dyno. That is about a 600 FWHP set up.

But yeah, 575 rwhp should be ~ 675 fwhp though.
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Old 10-17-2008, 10:31 AM
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657hp 642tq
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Old 10-17-2008, 12:00 PM
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Originally Posted by Stang's Bane
If he made 575 at the wheels out of a 402 with afr 205s, a sub 240 cam and a fast 90, then he was on a happy dyno. That is about a 600 FWHP set up.

But yeah, 575 rwhp should be ~ 675 fwhp though.
damn, maybe so on the happy dyno part...lol...
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Old 10-17-2008, 12:31 PM
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577hp / 527tq
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Old 10-17-2008, 07:34 PM
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And the winner is???

Hell, I don't know.. who was closest. lol

We had some electronics issues but the best pull was 561/534

Less than I was hoping but no too shabby and the torque curve was pretty nice. I will post the graph in a bit.

I also want to re-calculate my compression..

-3cc piston
66cc chamber volume heads
Stock GM gasket
4.005 bore

Where is that calculator?
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Old 10-17-2008, 09:04 PM
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Guessing at the piston .007 out of the hole, that puts the compression at 11.05:1
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Old 10-17-2008, 09:11 PM
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posts 9 and 13 are tied with the same deviations, at a total of 25, so they are tied!
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Old 10-17-2008, 10:01 PM
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I like this one: http://www.rbracing-rsr.com/compstaticcalc.html
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Old 10-17-2008, 10:43 PM
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Originally Posted by Haans249
posts 9 and 13 are tied with the same deviations, at a total of 25, so they are tied!
woohoo, I'll take a hot brunette w/ big *****
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Old 10-17-2008, 11:30 PM
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565 hp - 546 lp
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Old 10-17-2008, 11:44 PM
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Originally Posted by LS1-Master
565 hp - 546 lp
Wow.. you might have won if you had posted BEFORE I gave the results..
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Old 10-17-2008, 11:45 PM
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Originally Posted by cdubbzz
woohoo, I'll take a hot brunette w/ big *****

PM me your name and address...
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Old 10-18-2008, 01:34 AM
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Originally Posted by Steve1969LS1
Wow.. you might have won if you had posted BEFORE I gave the results..
uuhhh 561/534 is my guess then
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Old 10-18-2008, 07:43 AM
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Nice results for a mild cam. Why did you go with the 205 heads?
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Old 10-18-2008, 05:22 PM
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Originally Posted by LSWONGTO
Nice results for a mild cam. Why did you go with the 205 heads?
Because they are the heads I had.. Mamo thought they would flow fine for this combo especially since they had been worked over a bit.

Best pull was 561/534

Was hoping for more but it's better than before. Notice that the curve is up everywhere except the very top. More toque is a good thing especially for what I'm doing.



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Old 10-18-2008, 05:55 PM
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Originally Posted by Steve1969LS1
Because they are the heads I had.. Mamo thought they would flow fine for this combo especially since they had been worked over a bit.

Best pull was 561/534

Was hoping for more but it's better than before. Notice that the curve is up everywhere except the very top. More toque is a good thing especially for what I'm doing.



That is some good number there bro
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Old 10-19-2008, 12:41 PM
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I like that Katech set up.. wish it were cheaper
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Old 10-19-2008, 02:03 PM
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Actually it is pretty easy to figure out a 402ci engine moves 270cfm per cylinder at 6000rpm thats 540hp @ 6000 given your heads flow 270cfm wich they do then add 3% for every point of compression over 10.1 and your 556hp within 1%. If anyone is interested ? Stan Weiss offers some great calculation pages that will get you close if you have a build going use this link http://users.erols.com/srweiss/tablehdp.htm
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Old 10-19-2008, 06:19 PM
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That is a really good link. I'm going to add that to my list.
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