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408 w/ AFR 225's

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Old Feb 18, 2005 | 04:00 PM
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Default 408 w/ AFR 225's

99 Vette ,M6 ,3.90 gears
408ci Iron block 11.4-1 compression
AFR 225 heads milled to 66cc.
244/248 Cam
90mm LSX intake
42lb injectors
Kook 1 7/8 header, 3" X-pipe with Cats
Borla cat back.

Car idles at 900rpm.

Made 1 dyno pull with 100 miles on the setup to check the street tune.Will finish it when there is over 1k miles on it .
Uncorrected HP was 580.

Last edited by Slowhawk; Dec 2, 2009 at 08:13 AM.
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Old Feb 18, 2005 | 04:17 PM
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0.85 correction factor??? Are you sure? SAE?

Stout #'s though. Impressive.
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Old Feb 18, 2005 | 04:19 PM
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Nice numbers

Difference between corrected and uncorrected is 75hp? How cold was it in the dyno room?
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Old Feb 18, 2005 | 04:39 PM
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Don,
Those numbers look good!! Let us know what it makes when it's totally tuned.

Thanks
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Old Feb 18, 2005 | 05:44 PM
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Originally Posted by 1fastWS6
0.85 correction factor??? Are you sure? SAE?

Stout #'s though. Impressive.
Our dyno gets real screwy in the cold weather.It was 25 degree's outside and maybe 45degree's in the room.The dyno alway's over corrects in the cold.
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Old Feb 18, 2005 | 05:46 PM
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Originally Posted by Chris@AP-Engineering
Don,
Those numbers look good!! Let us know what it makes when it's totally tuned.

Thanks
Chris,The motor is incredable to drive.Throttle response is plain awesome and the motor is smooth as hell (thanks APE).We should have it on the dyno in a couple of weeks to finish tuning it.I'm expecting to bring the midrange up alot.
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Old Feb 18, 2005 | 06:14 PM
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Originally Posted by Slowhawk
Our dyno gets real screwy in the cold weather.It was 25 degree's outside and maybe 45degree's in the room.The dyno alway's over corrects in the cold.
Over corrects!!!
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Old Feb 18, 2005 | 06:19 PM
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Nice numbers!!!!! I'm dying for a 408 right now
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Old Feb 18, 2005 | 06:35 PM
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Originally Posted by Slowhawk
Chris,The motor is incredable to drive.Throttle response is plain awesome and the motor is smooth as hell (thanks APE).We should have it on the dyno in a couple of weeks to finish tuning it.I'm expecting to bring the midrange up alot.


You are WELCOME!! I will keep an eye out for the final tune results. 408's are the most fun to drive, great power band on them!!

We should have your other 408 done here very shortly.

Thanks
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Old Feb 18, 2005 | 06:35 PM
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Those #'s are pretty stout considering your a/f.. Hurry and put some miles on that puppy so you can get her fully tuned.
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Old Feb 18, 2005 | 06:51 PM
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Originally Posted by VINCE
Those #'s are pretty stout considering your a/f.. Hurry and put some miles on that puppy so you can get her fully tuned.
The car is actually the same as your's. Fixed roof,red but it has Mullit wheels and ghost flames We picked a fairly tame Cam so I'm not expecting the huge #'s.I figure 530hp and 490tq when it's done.

Chris,good to hear on the motor.We can't wait to pump 14lbs on Turbo into it
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Old Feb 18, 2005 | 07:10 PM
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Originally Posted by Slowhawk
The car is actually the same as your's. Fixed roof,red but it has Mullit wheels and ghost flames We picked a fairly tame Cam so I'm not expecting the huge #'s.I figure 530hp and 490tq when it's done.

Chris,good to hear on the motor.We can't wait to pump 14lbs on Turbo into it
Any pics of this monster???
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Old Feb 20, 2005 | 07:42 PM
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Originally Posted by VINCE
Any pics of this monster???

I didn't take any when I had the car.I will when it comes back for the final tuning
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Old Feb 21, 2005 | 09:38 AM
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Originally Posted by Slowhawk
The car is actually the same as your's. Fixed roof,red but it has Mullit wheels and ghost flames We picked a fairly tame Cam so I'm not expecting the huge #'s.I figure 530hp and 490tq when it's done.

Chris,good to hear on the motor.We can't wait to pump 14lbs on Turbo into it

Don, what are Mullit wheels?? Did you mean Mallet? If they are Mullit wheels then they must be from back in the day when you were cruzing around listening to Iron Maiden or something
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Old Feb 21, 2005 | 11:50 AM
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Mullet,thats funny
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Old Feb 21, 2005 | 10:30 PM
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Originally Posted by JS
Mullet,thats funny
Same thing I never said I was Pimp
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Old Feb 22, 2005 | 02:01 AM
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Those are some stout numbers . Just makes me want a 408 even more. Hopefully sooner than later
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Old Feb 22, 2005 | 09:35 AM
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Just kiddin Don
Now get back to figuring out the right cam change for my car
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Old Feb 23, 2005 | 10:59 AM
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these were un touched afr's? i saw they were milled, didn't see anything about being ported
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Old Feb 23, 2005 | 02:10 PM
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Originally Posted by kickassT/A
these were un touched afr's? i saw they were milled, didn't see anything about being ported
Just milled,no porting.
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