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| PUTTING 3.1 IN PLACE THE 2.8 (Page 1/2) |
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rameyusa
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OCT 28, 12:21 PM
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I have a 3.1 with the coil pack so how do i switch my 2.8 with this 3.1 i never done it but hear others have done it please help i am new ------------------
Kevin Ramey
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Dennis LaGrua
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OCT 28, 03:34 PM
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That would probably be the later 3100 engine. It will bolt up but it is not directly compatible with the 2.8L. To use that engine a new harness and the 3100 computer would need to be used. ------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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rameyusa
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OCT 28, 06:35 PM
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| quote | Originally posted by Dennis LaGrua:
That would probably be the later 3100 engine. It will bolt up but it is not directly compatible with the 2.8L. To use that engine a new harness and the 3100 computer would need to be used.
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Ok i have the computer from the 3.1 but where would i get the harness ? is it the one that wqas made for the 3.1 ?
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Dennis LaGrua
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OCT 28, 09:35 PM
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| quote | Originally posted by rameyusa:
Ok i have the computer from the 3.1 but where would i get the harness ? is it the one that was made for the 3.1 ? |
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Find a harness that went with that engine then take that harness and make a special harness using the Fiero 2.8L harness. It will take some rewiring of connectors.
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rameyusa
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OCT 29, 10:27 AM
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| quote | Originally posted by Dennis LaGrua:
Find a harness that went with that engine then take that harness and make a special harness using the Fiero 2.8L harness. It will take some rewiring of connectors. |
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I do have the harness and the computer that came with that motor but not sure how to have it rewired to fit my fiero
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Gall757
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OCT 29, 11:04 AM
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Couldn't Rameyusa use the 3.1 short block and put the 2.8 top end on it? [This message has been edited by Gall757 (edited 10-29-2021).]
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MarkS
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OCT 29, 05:49 PM
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What vehicle was the 3.1 out of?
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rameyusa
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OCT 29, 08:15 PM
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| quote | Originally posted by MarkS:
What vehicle was the 3.1 out of?
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not sure all i have is the 3.1 motor and the wiring harness and the computer
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Gall757
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OCT 29, 08:49 PM
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we might be able to figure it out with some pictures.
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css9450
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OCT 29, 10:38 PM
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Is it a 3.1 (MPFI) or a 3100 (SFI)?
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