10's or bust, bust it is
Apr 24, 2004 | 01:48 PM
#21
hahaha...I think that's a good goal to have (maxing out a 76 is making some serious power). They will flow to 950hp crank, 800rwhp. I think we're all shooting for you! Let us know when you have a motor or the 400ci motor in place. Turn up the boost! 
Apr 24, 2004 | 02:07 PM
#23
Thread Starter
single digit dreamer
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From: omaha ne
Originally Posted by Snake Eater
parish, your hitting 76% on 57lb injectors! 
When you do max that turbo, i have an idea what you can do with it.
Just curious, did you have ice in the resivour? What were your AITs with 13.5psi?
When you do max that turbo, i have an idea what you can do with it.
Just curious, did you have ice in the resivour? What were your AITs with 13.5psi?
Apr 24, 2004 | 02:07 PM
#24
TECH Junkie
Joined: Mar 2003
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From: Katy, TX
Hey, i just noticed you were only going 117mph. Thats a little over 1mph faster than my trap speed 
. So why the hell am i 1.5 seconds slower? I dont think im going to gain that much with slicks. Or even with a stall.
Im doin something seriously wrong here.
. So why the hell am i 1.5 seconds slower? I dont think im going to gain that much with slicks. Or even with a stall. Im doin something seriously wrong here.
Apr 24, 2004 | 02:15 PM
#25
Over stock, a higher stall torque converter will pick you up 3/10th's to 5/10th's in the 1/4. Again, with slicks versus stock radial tires, they will pick up .3 - .5 in the 1/4 depending on how you launch, drive, air pressure, etc. I hope that relieves any anxiety you have...heh heh. 
Apr 24, 2004 | 04:05 PM
#27
TECH Resident
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From: San Diego
Originally Posted by parish8
this is a kit, i got it from cmotorsports, one of the site sponcers.
i do plan on more cubes and more boost, afr headed 409 is in my future. my maf sensor flatlines at 60lb/min at about 5500rpm, i shift at 6500rpm, that is where i am guestimating the 65lb/min number.
i have 57lb injectors(66lb at the ls1 fuel presure), and duel walbro 340m fuel pumps, i may have to upgrade though, i am at 76% duty cycle all ready.
and no offence but... I WILL max that turbo
i do plan on more cubes and more boost, afr headed 409 is in my future. my maf sensor flatlines at 60lb/min at about 5500rpm, i shift at 6500rpm, that is where i am guestimating the 65lb/min number.
i have 57lb injectors(66lb at the ls1 fuel presure), and duel walbro 340m fuel pumps, i may have to upgrade though, i am at 76% duty cycle all ready.
and no offence but... I WILL max that turbo
Duty cylce means nothing. You can run at 110% duty cycle just fine without a worry. It's the IPW or injector pulse width that you should be watching. That is the time the injector stays open, or also reffered to as static.
Apr 24, 2004 | 04:12 PM
#28
I agree with the IPW comment, 50lb. injectors on my Turbo Buick can go mid-10's. I would have to guess, without calculating, they should go low 10's/high 9's on a V-8. You should be safe with the 57's, unless of course you have pockets full of money and need a 25% margin of error to feel safe.
Apr 24, 2004 | 05:30 PM
#30
I beg to differ but an '03 RCSB has a Curb Weight, on average, of 4439 lbs. Depending on the options, a Buick can weigh from 3,400 - 3,800. That's only a 700 to 1,100 lb. difference. One Ton equals 2,000 lbs., sorry.
It's my opinion he has enough injector backed by 12 years of racing with Fuel Injection. Just an opinion...take it for what it's worth. Think about it... if QMP is using 57 lb.'ers to make 775rwhp/865tq. then he has enough to make 500+ (based on weight of his truck versus trap speed).
It's my opinion he has enough injector backed by 12 years of racing with Fuel Injection. Just an opinion...take it for what it's worth. Think about it... if QMP is using 57 lb.'ers to make 775rwhp/865tq. then he has enough to make 500+ (based on weight of his truck versus trap speed).