And keep a detailed log of your bin file changes. It will help you in troubleshooting and diagnosing how and why things happened/improved/failed.
And keep a detailed log of your bin file changes. It will help you in troubleshooting and diagnosing how and why things happened/improved/failed.
Familiar with 1227747 and 16197427 PCMs
Ok, so I got a chance to do some more reading.
looks like stock I have ~12 psi fuel pressure? So need to increase that to 20? Is the regulator adjustable on these?
And change BPW to 132 from the stock 135?
Looked in Tunerpro couldn't find "Hacks" as you described? I must be doing something wrong...
Got my G2 adaptor soldered in the other night, so I'm all ready to cause destruction
Thanks for you patience guys!
-Frank
1987 GMC Suburban K2500 400SBC, TH400 Trans, 3.73 Gears
1995 GMC Suburban K2500 454BBC, 4L80E Trans, 3.73 Gears
You can mave the factory fpr adjustable. Its very easy. To get that kind of pressure you will need a bigger pump and regulator spring. Personally I would go with bigger injectors at stock fp and copy the bpw, offset, etc from the donor vehicle bin takes some of the guesswork out.
87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,
So the injectors will not be sufficient in their stock form?
-Frank
1987 GMC Suburban K2500 400SBC, TH400 Trans, 3.73 Gears
1995 GMC Suburban K2500 454BBC, 4L80E Trans, 3.73 Gears
Bigger injectors or more fuel pressure. There's barely enough fuel from stock 61lb injectors for a stock motor, you added approx 60 cubic inches that needs to be fed!
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
I'm running the injectors out of a 91 454 @ 19 psi in my cam'd 355.
87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,
What is the best way to go?
Do you still have that 454 tbi for sale?
-Frank
1987 GMC Suburban K2500 400SBC, TH400 Trans, 3.73 Gears
1995 GMC Suburban K2500 454BBC, 4L80E Trans, 3.73 Gears
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