soi striped apart my 84 inside and out. getting ready to put on a fastback clip. i was planing on a 3.4 swap. but have been reading alot about the 3800 sc. i want peoples ideas and opinions on both. i know the 3800 is more work but is the power worth it? also will it work with my 4spd?

so i finishaed pulling out the old harness today. from the front firewall back. i need a write up on instaling the new harness. from either a 85 or 86

(I'm a 4.9 guy) The 3.4 will be a slightly simpler and cheaper swap, but there are great resources and support for both. You need to decide what you plan on doing with the car to decide what will make you happy. You can't go wrong with either, but if you really want power and all out performance, then you are better off starting with the 3800sc. Be aware that the supercharger sound is not for everyone...you'll be listening to it a lot, so you should do a search for some 3800sc videos (taken from within the car) to get a feel for what it sounds like.

There are issues with the 84 that need to be dealt with. Sounds like you are already doing a harness swap. I'm not sure what else, if anything may be required.

Good luck! ...and keep the thread going!

i evently intend to swap to 88 cradles starting in the back first

well got a guy wants to buy my duke. soo......i need a full right up for puting a 3.4 into my 84

You will want to read this one.............

https://www.fiero.nl/forum/Forum3/HTML/000026.html

ty. i am also reading and printing out this

http://gafiero.akroncdnr.com/docs/84v6.pdf