AFR 225 or AFR 205
05-13-2006, 07:27 PM
#4
I had the same question before I bought my 225cc's for my forged 347/CAS twin turbo combo. I called AFR and they recommended to go with 225cc's, at first i was kind'a concern about the 225's being a little too big for a 347", I just didn't want my car to be a real pig in the low rpm's, you know. but they said that as soon as i see 1# of boost with the bigger heads...i'tll just scream (i sure hope so! 
). According to them, the window of time BEFORE it hits boost is so little compare to when i start making boost and on up, and what little i would loose in the low rpm's, i would gain a heck of lot more in the upper rpm's compare to a 205cc's... therefore more power. But, I'll find out soon for sure if i'll hit the power that i'm hoping for. 
). According to them, the window of time BEFORE it hits boost is so little compare to when i start making boost and on up, and what little i would loose in the low rpm's, i would gain a heck of lot more in the upper rpm's compare to a 205cc's... therefore more power. But, I'll find out soon for sure if i'll hit the power that i'm hoping for. 
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05-13-2006, 10:27 PM
#8
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Im running 225s on stock cubes, results in about 1 week ....
so AFR Mongoose 225cc FULLY CNC 72cc Chambers COMPLETE it a good choice .
Last edited by NAVY; 05-13-2006 at 10:46 PM.
05-13-2006, 10:42 PM
#9
225s all the way on a forced induction car. Velocity is most important on an N/A motor, you just want big heads for an F/I car in general.
Mine made 680 rwhp on 10 psi/91 octane on a low compression 347 with a 230/224 cam and AFR 225s. Not incredible, but expected given the good stout combo.
Mine made 680 rwhp on 10 psi/91 octane on a low compression 347 with a 230/224 cam and AFR 225s. Not incredible, but expected given the good stout combo.
05-14-2006, 12:25 PM
#12
Originally Posted by Wet 1
225's without a doubt for FI!
Mark
05-14-2006, 04:04 PM
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Originally Posted by mdhmi
I respectfully disagree. There are stock cube C5's cars running 140-145 MPH with out of the box 205's. I went with the 205's for additional power under the curve and partial throttle acceleration. If I were doing a 4'' stroke I would have opted for the 225's.
Mark
Mark
BTW just think, those cars running 140-145 mph could be running a little faster with the 225's.
05-16-2006, 01:40 AM
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Originally Posted by NicD
225s all the way on a forced induction car. Velocity is most important on an N/A motor, you just want big heads for an F/I car in general.
Mine made 680 rwhp on 10 psi/91 octane on a low compression 347 with a 230/224 cam and AFR 225s. Not incredible, but expected given the good stout combo.
Mine made 680 rwhp on 10 psi/91 octane on a low compression 347 with a 230/224 cam and AFR 225s. Not incredible, but expected given the good stout combo.
Not incredible? ..LOL..I disagree... 
