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Thread: Swapped heads cam exhaust - how much power

  1. #16
    Fuel Injected! jameslleary's Avatar
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    Orange/black are 55pph pn 5235206

  2. #17
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    Quote Originally Posted by PJG1173 View Post
    I looked at your log file and ran it through the $0D ADX I'm using then exported it to a database that sorts the data. on thing I noticed is that your wb is reading differntly than what your BLM's are reading. so I would assume that your pcm is correcting for problems with your VE table and the WB is confirming that its making the proper corrections. attached is a report I threw together showing diffent views of your data. to include duty cycle info.

    Ok i got the numbers of the injectors.

    Double checked injectors and the numbers are different. 5235206 and 5235279.

    Numbers are hard to read, don't see any color codes.

    I have one 50lb and one 61lb.
    I have a spare 61lb but I'll have to go get it and I'm running out of time today. Got to leave for work at 12:30pm. Work the afternoon shift.
    This next week I'll be on vacation out of town. Will check back to this sight but won't have the truck.

  3. #18
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    Quote Originally Posted by jameslleary View Post
    Orange/black are 55pph pn 5235206

    This is from eaglemark's link

    5235279 - White / Green - 50pph (overrated @ 55pph) - 5.0L / 305 Cars/Trucks

    5235206 - Orange / Black - 61pph - 5.7L / 350 Cars/Trucks

  4. #19
    Fuel Injected! jameslleary's Avatar
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    Hmmm....all other resources say 55pph, dont even list 61's.

  5. #20
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    Quote Originally Posted by EagleMark View Post
    Paint marks are all but gone nowadays, the post color does not indicate anything.

    Grab the number and look, there's lot's of differant information on how much they flow, we started a list and supposed to be correct for 13 PSI
    http://www.gearhead-efi.com/Fuel-Inj...d-part-numbers

    Orange Black 61pph
    Yellow Brown 65pph

    You have plenty of fuel right now and need to adjust lower VE down. But installing the timing table that went with the motor Fast355 built would be first for big improvements. With 8 degree distributor setting figured into the ADX file you are running about 12 degrees advance WOT. And cruise about 18 so yes it would be low on power.

    Now you have to be very careful with spark advance! You disabled a lot, did not account for 8 degree base setting. Have you checked at timing marks with light to match what ADX is showing?
    On the scalar of initial timing adv it is set at 8.1* Is that not right?

    No I did not check timing light and adx showing. But I can. It will be a several days before I can.

  6. #21
    Fuel Injected! PJG1173's Avatar
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    we've been there before. the 5235206 are 61pph. after my first mistake I made with injectors I always look up the flow rate in the bin for the vehicle I take the injectors out of.
    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,

  7. #22
    RIP EagleMark's Avatar
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    Quote Originally Posted by jameslleary View Post
    Hmmm....all other resources say 55pph, dont even list 61's.
    The first list ever compiled at DIY EFI was wrong and spread across internet like gospel truth and now can never be fixed... if you look at a 1995 5.7L bin like $0D it says 61PPH

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  8. #23
    RIP EagleMark's Avatar
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    Quote Originally Posted by pima.1971 View Post
    On the scalar of initial timing adv it is set at 8.1* Is that not right?

    No I did not check timing light and adx showing. But I can. It will be a several days before I can.
    Yes that is correct for XDF. But in the ADX file it is set to 0 and has to be compensated for to read correctly.
    X * 0.351563 + 0.000000
    Change last number(offset) to initial advance of engine, for correct display.
    Yours would need to be changed to X * 0.351563 + 8.100000

    I think I reversed it in other thread and said it was less but it is more, but with all the compensaters and you zeroed out some what is the timing really? That is my point!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  9. #24
    Fuel Injected! jameslleary's Avatar
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    Ok...good to know.

  10. #25
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    OK. Changed it in the adx. I see what you mean. I appreciate you breaking it down like that. That was easy to follow.

  11. #26
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    Got the injectors changed. Both end in 206 now.
    Was advised to bump up fuel pressure as the BPW at 6.? was too high.
    20psi and tuning to bring everything closer.

    Is it better to tune using BLM's or the wbo2 because sometimes they are not even close.

    Can't post the last log as the file is to large. Maybe I can get a shorter one tomorrow afternoon.

  12. #27
    Fuel Injected! PJG1173's Avatar
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    I tune mine via the WB in OL.
    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,

  13. #28
    RIP EagleMark's Avatar
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    Quote Originally Posted by pima.1971 View Post
    Got the injectors changed. Both end in 206 now.
    Was advised to bump up fuel pressure as the BPW at 6.? was too high.
    20psi and tuning to bring everything closer.
    Well in $0D with 61pph injectors now at 20 PSI you would have to change "Injector Flow Rate (TBI lb/hr)" to 75.66. I don't think I would mess with BPW msec times on this yet? I could be corrected?

    Of course WB OL will get you dialed in better, but can be done with BLMs.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  14. #29
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    61pph / 13 psi= 4.692 x 20psi = 93.84.
    I'm sure I'm doing something wrong. But with almost 30% rise in pressure how did you get 75.66?

  15. #30
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    Quote Originally Posted by pima.1971 View Post
    61pph / 13.5 psi = 4.692 x 20 psi = 93.84
    I'm sure I'm doing something wrong. But with almost 50% rise in pressure how did you get 75.66?
    ....

    Fuel pressure is closer to 19.5 I just made a generalization that was a little too specific, sorry about that. I actually calculate 91.5pph @19.5
    Last edited by pima.1971; 06-02-2012 at 09:30 PM.

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