So bring this thread back up from the dead to start an argument with a Mod?
There is a 3400 swap guide on 60degree you can download and right in it, it says this
Exhaust Manifolds: If your 3400 didn’t come with any exhaust manifolds, the 3100’s should fit. I
would use the 3400 ones though; they are larger than the 3.1’s from what I’ve heard. When you use the
3400’s manifolds, you will have to have the exhaust down pipe from a 3400 in order for you to be able to
connect it to your 94 or 95’s current exhaust system. The only way that you can connect the 3400 to the 94
or 95’s exhaust system is to have it brought in to an exhaust shop. The 3400’s exhaust sits farther to the
right (passenger side firewall) than the 3100’s. This means you have to have a custom pipe bent in order to
have it work (Most likely not a at home project). There will be a tight squeeze between the firewall and the
pipe, but it will fit. Basically all that the exhaust shop needs is the head of the down pipe. They won’t be
able to use 3100’s down piping because it has a dual layer design (which is not worth even trying to make
work, since it will be a lot cheaper to have a new pipe put in instead.).
Sorry but when you do absolutely NO research on the project your attempting to complete you will get somewhat rash replies since there are many posts regarding this topic.
I also uploaded the original 3400swap.com guide in june to a thread which I just found by simply searching 3400 downpipe, it would have given him all the answers he needed... Sorry but laziness just pisses me off.