IMO you have confirmed that a richer mixture does not cause the manifolds to turn red, but you have not confirmed a fuel delivery problem. Do you have access to datalogs or scantool readings? Have you confirmed the timing is actually set where it shuld be set?
I believe we hashed this to death in the other thread : http://www.gearhead-efi.com/Fuel-Inj...-P30-Motorhome
Last I left it there was no hard data that the injectors actually flowed what Rock Auto said they did , and again , 12 psi is no where near enough to fuel a BBC under load , Period.
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
I was having a hell of a time finding real 454 injectors almost everywhere I looked has 350 and 454 as the same part number
I have to guess the last owner of my truck was trying to get better mileage since there was one of the wrong injectors in it when pulled the radiator i found what I think is the right big block injector but it's so rusted I can't use it anyway smh!
Last edited by De-stroker; 04-21-2017 at 11:19 PM.
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