APE Project SS Silverado!
Jul 22, 2004 | 11:44 PM
#32
TECH Veteran
Joined: Mar 2004
Posts: 4,632
Likes: 2
From: Sun Diego
I thought air flow was measured in CFM (cubic feet per minute), not lbs, and that it was nearly parity (1:1 ratio) for CFM/HP?
Originally Posted by parish8
yes there is
NA 11hp per 1lb of air
boosted is 10hp per 1lb of air
this is fly wheel hp and asuming a proper tune, if you have 5deg of timing you wont be close to those numbers. also your maf tables have to be stock, if you mess with the tables then the rule of thumb no longer applies.
i hit 60lb's of air at about 5200rpm
gmcski see's the 60lb max at about 4300rpm i think
once you max the maf the only way to add fuel is with the PE tables, you add fuel based only on rpm. it works but isn't very consistant. if it warms up you will be rich and if it gets cold you will be leaner.
NA 11hp per 1lb of air
boosted is 10hp per 1lb of air
this is fly wheel hp and asuming a proper tune, if you have 5deg of timing you wont be close to those numbers. also your maf tables have to be stock, if you mess with the tables then the rule of thumb no longer applies.
i hit 60lb's of air at about 5200rpm
gmcski see's the 60lb max at about 4300rpm i think
once you max the maf the only way to add fuel is with the PE tables, you add fuel based only on rpm. it works but isn't very consistant. if it warms up you will be rich and if it gets cold you will be leaner.
Jul 23, 2004 | 05:53 AM
#36
Chris / Nick - I agree w/ parish8, I doubt that you've maxed out the MAF. Double check the speed limiter and any other ETC settings. I helped a buddy stick a 423 in an 03 escalade and it pulls hard the whole time on the stock MAF.
Jul 23, 2004 | 06:25 AM
#37
Cuz I AM a BADMOFO
Joined: Apr 2003
Posts: 3,624,039
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From: Mission to Uranus
Originally Posted by gonzo 6.0
I believe c3c5 runs stock size tires and wheels.Stock axels and tcase stock AWD.He does have a built THM 350,he couldnt get the 4l65E to live.
I want a 408......dammit
I want a 408......dammit
He runs the truck with both stock wheels and the big 22's. Here is a link to the video's if anyone hasn't seem them,...very impressive. I do know that on just the motor he has been in the mid 12's with the big wheels, and in the mid elevens (or better) on the big wheels with spray.
Jul 23, 2004 | 08:43 AM
#38
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Originally Posted by BigTex
Chris / Nick - I agree w/ parish8, I doubt that you've maxed out the MAF. Double check the speed limiter and any other ETC settings. I helped a buddy stick a 423 in an 03 escalade and it pulls hard the whole time on the stock MAF.
Jul 25, 2004 | 10:08 PM
#39
TECH Resident
Joined: Nov 2001
Posts: 880
Likes: 1
From: Twin Cities
The Radix will make over 600 Flywheel HP from like 4800 up @ 5psi but its a pretty flat line. The intercooler also becomes a restriction at these levels. Flows like 980CFM if I rember correctly. I'll try and get a dyno sheet posted (Engine Dyno)
But peak #'s aren't where the Radix shines. It makes gobs of TQ on this motor I'd say probably close to 700 ftlbs@ the flywheel below 4,000 rpms. Spin the blower higher and shift sooner
With my old Radix setup it would log 60 plus lbs of Air @WOT
The Radix is a great setup but you can't treat it like a ATI and spin the motor like nuts.
Chris I'm looking forward to seeing your numbers from the Track
But peak #'s aren't where the Radix shines. It makes gobs of TQ on this motor I'd say probably close to 700 ftlbs@ the flywheel below 4,000 rpms. Spin the blower higher and shift sooner
With my old Radix setup it would log 60 plus lbs of Air @WOT
The Radix is a great setup but you can't treat it like a ATI and spin the motor like nuts.
Chris I'm looking forward to seeing your numbers from the Track
