How far can i push it???
06-25-2006, 02:03 PM
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How far can i push it???
I have already lost one motor by to much boost and not enough fuel. Now that I have lowered the compression to 8.7 or so and had the motor balanced I am curious how far I can push it. I plan on adding alkycontrol and maybe some NOS gor out of the hole. I have also added a Dynojet WB, I also have bought SCT tunning software so I can get the AFR right on 11.5-11.8. I was hoping to get 18-20lbs, possible? I guess I should be asking Parish all the ?'s.
06-25-2006, 02:29 PM
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I dont see you being able to come near 18-20# on the street with a GT67 and 6.0. Trying to push that much out of that combo is going to be nothing of problems. Is the motor forged? Im going to start out with a 6.0 and GT67 until I get the 370 built. Then when I get to it I'll swap in the 370 and go with a GTS76 or something along those lines
06-25-2006, 02:44 PM
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Originally Posted by greentahoe
I dont see you being able to come near 18-20# on the street with a GT67 and 6.0. Trying to push that much out of that combo is going to be nothing of problems. Is the motor forged? Im going to start out with a 6.0 and GT67 until I get the 370 built. Then when I get to it I'll swap in the 370 and go with a GTS76 or something along those lines
06-25-2006, 02:55 PM
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Originally Posted by macs406
How could I push it?? Everything is stock except for the diamond forged pistons and it was balanced. In september if the price is right i am going for the 481 setup with an ATS built trans.
06-25-2006, 03:22 PM
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Originally Posted by greentahoe
if you have forged pistons and good rods you should be set as long as the tune is good. The GT67 is good for you since it will make full boost lower. What size converter and gears are you using? If you want to make 18-20 you will be very near uncharted water. I believe only Parish and 2Tone have pushed it that far. Parish was using a megasquirt system and HUGE injectors.
What are the good upgrades for a 4L80 with out disassembling it-convertor, valve body, solenoids....
06-25-2006, 03:34 PM
#7
You don't have enough injector for 18-20psi. 42lbers will take you to 480 crankshaft hp assuming an 80% duty cycle, 58psi of fuel pressure, and using a BSFC of .65. That's about 10-12psi on 364 cubes.
To get to 18-20psi you need big injectors -- I run 75 lbers (rated @43.5psi) with two fuel pumps, a boost ref'd (1:1) fpr and meth. I believe Jim runs 96lbers. In either case you need a peak and hold injector driver (either a fly board on an MS or a stand alone acceleronics like I run).
To get to 18-20psi you need big injectors -- I run 75 lbers (rated @43.5psi) with two fuel pumps, a boost ref'd (1:1) fpr and meth. I believe Jim runs 96lbers. In either case you need a peak and hold injector driver (either a fly board on an MS or a stand alone acceleronics like I run).
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06-25-2006, 03:37 PM
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Originally Posted by TurboBerserker
You don't have enough injector for 18-20psi. 42lbers will take you to 480 crankshaft hp assuming an 80% duty cycle, 58psi of fuel pressure, and using a BSFC of .65. That's about 10-12psi on 364 cubes.
To get to 18-20psi you need big injectors -- I run 75 lbers (rated @43.5psi) with two fuel pumps, a boost ref'd (1:1) fpr and meth. I believe Jim runs 96lbers. In either case you need a peak and hold injector driver (either a fly board on an MS or a stand alone acceleronics like I run).
To get to 18-20psi you need big injectors -- I run 75 lbers (rated @43.5psi) with two fuel pumps, a boost ref'd (1:1) fpr and meth. I believe Jim runs 96lbers. In either case you need a peak and hold injector driver (either a fly board on an MS or a stand alone acceleronics like I run).
06-25-2006, 04:01 PM
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Originally Posted by TurboBerserker
You don't have enough injector for 18-20psi. 42lbers will take you to 480 crankshaft hp assuming an 80% duty cycle, 58psi of fuel pressure, and using a BSFC of .65. That's about 10-12psi on 364 cubes.
To get to 18-20psi you need big injectors -- I run 75 lbers (rated @43.5psi) with two fuel pumps, a boost ref'd (1:1) fpr and meth. I believe Jim runs 96lbers. In either case you need a peak and hold injector driver (either a fly board on an MS or a stand alone acceleronics like I run).
To get to 18-20psi you need big injectors -- I run 75 lbers (rated @43.5psi) with two fuel pumps, a boost ref'd (1:1) fpr and meth. I believe Jim runs 96lbers. In either case you need a peak and hold injector driver (either a fly board on an MS or a stand alone acceleronics like I run).
06-25-2006, 07:08 PM
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just an educated guess, i could be way wrong, I would say a good safe boost would be about 12-14, then if that works out fine, maybe jump up to 15-16 later.