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Thread: 6395/7427 PFI mode

  1. #1
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    6395/7427 PFI mode

    On the PFI change, is there a downside to leaving the two resistors in place and just jumpering over top of them.
    6395, BHDF, 7.4 BBC lightly modded now 6395 BMHM back to BHDF

  2. #2
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    Quote Originally Posted by myburb View Post
    On the PFI change, is there a downside to leaving the two resistors in place and just jumpering over top of them.
    Nope , no downside , it'll work fine.

    TOM
    1994 3500 Dually , 502 (509) , 264HR , Edelbrock MPFI , PFI '7427
    1992 S-10 434 SBC/Tremec - '7427
    1986 Monte Carlo SS
    1984 S-10 , SAS, 496/700R4/205 , D44/14BFF -'7427
    1980 Z-28 496/700R4
    1979 Corvette 496/700R4
    1977 Olds 98 Regency 403/700R4

  3. #3
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    Thanks, I want to run a dual tbi/PFI system with a switched jumper.
    6395, BHDF, 7.4 BBC lightly modded now 6395 BMHM back to BHDF

  4. #4
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    That sounds interesting! Why are you going that route?
    1973 K-5 Blazer, TBI 350, TH400, 1 ton axles & 38" SSRs'
    1975 280Z, TBI 350, 700R4
    1953 M-38A1, TBI Buick 231
    1951 Ford Panel, 5.3 with 4L80E

  5. #5
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    It is running super on tbi but it wasn't an easy trip. With lack of detailed documentation and no one doing the same thing it was a slow road of trial and error, data, trial and error which made for limited use on the burb. I am going to install a dual system so I can fool with mpfi when I feel like it and still use it on tbi for the other uses until the mpfi is pretty much perfect.
    6395, BHDF, 7.4 BBC lightly modded now 6395 BMHM back to BHDF

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