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Topic: 3.8 CFI to 5.0 CFI "HO" (Read 1774 times) previous topic - next topic

3.8 CFI to 5.0 CFI "HO"

Reply #15
Was doing a little more thinking on this I have some questions. Would the v6 fuel pump work ok with this motor and how well do you think the v6 trans would hold up?
85 Tbird 5.0
78 F150 351w
13 F150 4x4 3.5 Ecoboost

3.8 CFI to 5.0 CFI "HO"

Reply #16
The V6 fuel pump should be enough for a stock CFI 5.0. The V6 trans will work for a little while if you're easy on it. It isn't as strong as a 5.0 AOD.
Matt
1984 Thunderbird - 89 302 HO, GT40 heads w/ Trick Flow springs, E303 cam, Edelbrock Performer 289 intake and 600 cfm 4bbl, Mustang headers, Jegs o/r H pipe, Dynomax lers, Mustang AOD and shifter, Mustang 8.8 w/ 3.73s, 3G alternator, Mustang front and rear sway bars, KYB 87-88 Turbo Coupe shocks and struts, and 11" front brakes.

1988 Mustang GT - GT40 heads, Explorer intake, 70mm throttle body, 70mm MAF, Crane 1.7 rrs, E303 cam, Kirban Kwik shifter w/ Pro 5.0 deluxe handle, aluminum clutch quadrant and firewall adjuster, o/r h pipe, Dynomax lers, 3G alternator, aluminum radiator, and 3.27 gears.
 
1986 Cougar 5.0, 1989 Mark VII LSC 5 speed, 1980 Mercury Zephyr 4 door (sold)

3.8 CFI to 5.0 CFI "HO"

Reply #17
Has anyone actually tried running a 5.0 HO CFI engine with a 3.8L CFI EEC? The injectors are over 40% bigger. The computer is not going to be able to adjust to that.

3.8 CFI to 5.0 CFI "HO"

Reply #18
I have done the opposite ,, 5.0 eec on a 3.8 but it was not an ho eec.

im sure he can get it up and running with either a v8 or v6 eec with no real noticable issues unless codes start telling otherwise.

never had my hands on an ho CFI EEC so i would not know what it acutally feels like to have an HO EEC infront of an HO EEC.

3.8 CFI to 5.0 CFI "HO"

Reply #19
Quote from: 5.0 bird;183728
The V6 fuel pump should be enough for a stock CFI 5.0. The V6 trans will work for a little while if you're easy on it. It isn't as strong as a 5.0 AOD.


Thanks for the info.
85 Tbird 5.0
78 F150 351w
13 F150 4x4 3.5 Ecoboost