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| wtb, swap harness and ecu tune (Page 1/1) |
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cuffs5749
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DEC 25, 08:12 PM
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want to get a harness to install 7730 ecm into 1987 fiero gt. using a 2000 grand am la1 3400 and a 1992 cutless 4t440 automatic.
or if easier obd2 , Also have a 4t60e transmission from a 1998 monte carlo[This message has been edited by cuffs5749 (edited 12-25-2025).]
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Dennis LaGrua
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DEC 26, 05:39 PM
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While your project is nice the 3400 engine with the 730 ECM is not a very common Fiero swap combo. You can most likely do that swap but AFAIK documentation on it may be hard to find.. ------------------
" 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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cartercarbaficionado
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DEC 27, 05:37 AM
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| quote | Originally posted by cuffs5749:
want to get a harness to install 7730 ecm into 1987 fiero gt. using a 2000 grand am la1 3400 and a 1992 cutless 4t440 automatic.
or if easier obd2 , Also have a 4t60e transmission from a 1998 monte carlo
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https://www.fiero.nl/forum/Forum1/HTML/091261.html
i think that should help? it mentions needing to get the obd1 wiring to actually use the 7730 ecu... now my question is that if it already runs currently then why not try to find someone who can tune that ecu or use a piggyback module?
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