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  1. Replies
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    I would be interested in one (or more) of the 525...

    I would be interested in one (or more) of the 525 MAG BBC intakes if the price is right .

    Are these complete with TB and fuel rails / injectors ?

    P/M on here or email tomsnastyz@yahoo.com with...
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    I own a few of these trucks, all GMC's though , a...

    I own a few of these trucks, all GMC's though , a '70 , 2-'71's and a '72 , they are by far my favorite of the GM lineup .

    IMHO , they should all have GMC front end styles though , love the 4...
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    Unfortunately as you have found there was no...

    Unfortunately as you have found there was no 454/700R4 combo offered from GM .

    I had to make my own Hybrid BBC/700R4 calibration but I use a different PCM than you are using .

    If I were you I...
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    Just in case someone stumbles on this thread and...

    Just in case someone stumbles on this thread and wants an answer .... :

    The grounds to the PCM that I mentioned are to come from the body of the sensor , the body of the sensor grounds through...
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    Well i'll be ..... That's one of those "Why...

    Well i'll be .....

    That's one of those "Why didn't I think of that"......

    Damn well sure gonna try to make one first chance I get though .

    TOM
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    1,152

    Black box PCM help

    12380

    Like the title says ,

    Have a 1999 Blazer , 4.3 , Black box PCM (16263494) , fighting an issue where none of the three O2 sensors shows a return ground , Pin 25, 26 and 7 are supposed to...
  7. Does the engine still have an EGR valve ? If so...

    Does the engine still have an EGR valve ? If so is it operational and closed fully at idle ?

    TOM
  8. Thread: FITech systems

    by Nasty-Z
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    10,320

    I believe I have all of the Pro Cal files , but...

    I believe I have all of the Pro Cal files , but still lack the handheld files .

    If you are in the sharing mood I would take a copy of what you have and I will return what I have just to be sure...
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    I believe we hashed this to death in the other...

    I believe we hashed this to death in the other thread : http://www.gearhead-efi.com/Fuel-Injection/showthread.php?4391-Glowing-Exhaust-Manifolds-1992-454-TBI-7-4L-P30-Motorhome

    Last I left it...
  10. Thread: FITech systems

    by Nasty-Z
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    10,320

    I would not run a TBI with a dual plane manifold...

    I would not run a TBI with a dual plane manifold , TBI loves a single plane manifold , period.

    I would have no clue what Dave is doing in the tune but I would suffice to say he is way more savy...
  11. Thread: FITech systems

    by Nasty-Z
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    10,320

    Installed a Go EFI 800 P/A system on a warm 454...

    Installed a Go EFI 800 P/A system on a warm 454 BBC , totally unimpressed . Had to piggyback the factory '7060 (eeek....) to control the trans . Tuning software is a joke , as well as the handheld...
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    A few years ago when I ran that intake setup I...

    A few years ago when I ran that intake setup I used the 13107 Aeromotive regulator , it is an LT1 rail mount unit , but I used a fitting from Aeromotive to convert the inlet to -6an . Mounted it on...
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    BHDC or BMHK

    BHDC or BMHK
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    It will physically fit in the holder , but will...

    It will physically fit in the holder , but will not function .
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    Use an actual vacuum gauge to verify , could be a...

    Use an actual vacuum gauge to verify , could be a sensor bad but I doubt it . I was looking at one of your earlier logs that you sent me and it didn't show a negative MAP value while I was looking at...
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    MAP signal to the PCM is on pin B13 , I would...

    MAP signal to the PCM is on pin B13 , I would start by checking for resistance in the wire (Lt Green) leading from the MAP sensor to the PCM , perhaps there is a cut or broken spot in the wire not...
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    TBI injectors as they left GM were flowed @ 13...

    TBI injectors as they left GM were flowed @ 13 psi , so the 61#/hr would be @ 13 psi .

    However there will only be a 2.4#/hr difference (58.6#/hr) if you flowed them @ 12 psi , not much to get...
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    16197427 and 16196395 PCM's are interchangeable ,...

    16197427 and 16196395 PCM's are interchangeable , Knock sensor must be matched to the PCM used . S8011 is the correct sensor for the 16197427 and 16196395.

    S8012 is for the earlier 1227747 style...
  19. Thread: TBI timing

    by Nasty-Z
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    APU1 Guess I'll give them another shot . ...

    APU1

    Guess I'll give them another shot .

    Thanks Brian , hope all is well .

    TOM
  20. Thread: TBI timing

    by Nasty-Z
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    Brian , Have you used the off brand EEproms ?...

    Brian ,

    Have you used the off brand EEproms ? I tried a pack of 20 (I think) a while ago , only 1 or 2 out of the whole pack were good , went back to using genuine SST's from then on .

    Just...
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    They were essentially a 4.3 injector ran at a...

    They were essentially a 4.3 injector ran at a higher pressure, if you do the math , the 45 pph 4.3 injector @ 13 psi would be around 70 pph @ 32 psi , GM's thought was it would fight vapor lock by...
  22. I usually cut the center devider down in a dual...

    I usually cut the center devider down in a dual plane manifold , but on a relatively stock engine I don't see it as a requirement . TBI likes a single plane intake , so anything you do to open the...
  23. As a user of all three at one point in time , the...

    As a user of all three at one point in time , the Inject-It is by far the most refined unit of them all.

    That being said , any of the three will work just fine for a conversion , I also use the...
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    Or simply parallel relays to provide a fail safe...

    Or simply parallel relays to provide a fail safe ......

    I like the idea of a fan in operation light , I have two in the switch panel in my Blazer , one for each fan. Only thing they will not tell...
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    As stated , it will work fine . I always use the...

    As stated , it will work fine . I always use the output to trigger a relay , just for another piece of mind in the circuit.

    TOM
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