3800 Standalone Harness – Swap Specialties Got a buggy? How about a 3800? If not, get one! Everybody knows the 3800 for its durability, power, and reliability in the GM cars. It goes even better in a buggy, rail, or 4x4. We custom make each harness and engine run it on an engine before it ships. 3 wires (that are provided) and your running. Our weatherproof fuse and relay box that is built onto the harness can be mounted anywhere. Let Fiero 3800 engine swap info - gmtuners 3800 specific engine swap info. First, a little 3800 info: The 3800 first appeared in 1988. It is virtually the same as the FWD Buick 3.8 with the exception of having the oil pump located in the timing cover and used DIS instead of a distributor. In 1992, the supercharged version appeared using a M62 blower. FastFieros 3800 DIY FAQ 3800 SuperCharged or 3800 Natural Aspirated engine FAQ for the DIY . This document is targeted to the consumer that needs to know how things work, and wants to be educated in the swap process of putting a 3800 based engine to the Pontiac Fiero.
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