If...

[gobluebrett]

If I were to do a 3100 to 3400 engine swap in my 94, would all the performance mods for the 3400 work on my car, or does it depend on the car design?? Because I am just trying to figure out if I switched to a 3400 if I could get all the performance mods because the mods for the 3100 are really lacking. Thanks.

[voyager]

most of the 3400 mods already work on your 3100. the exhaust is the same, the intakes will fit ( less the MAF that you don't have ), and the underdrive pulley is the same. the poly mounts are the same.

the headers don't fit, and won't fit if you had a 3400 instead. they don't clear your steering rack. you can't have your computer tuned even if you swapped engines unless you swap wiring harnesses and ECU's too.. so you wouldn't get any bigger range of options by swapping engines, just a bigger engine.