3500 manifolds - will 3400's fit?

[hookdonspeed]

gathering parts for a fiero 3500 install, the 3500 im getting has the "header" style, but for what i want to do, i think the log style on the 3400's will work better, i dont know what cars to look for in the local yard for the 3500 log syles... will the 3400's work - are the 3500/3400 log styles diffrent at all?

-- does anyone have good pics of both to makesure im not crazy on this?

[IsaacHayes]

3400 will fit, but the ports are smaller. There are some late model 3400's that had large ports same as 3500 manifolds but log style. Like 2004 or 2005+ impala 3400. Some 3500's had logs too.

[MidnightriderZ24]

pick up 3400 manifolds from a 04+ equinox and the minivans with a 3500. they use the older log style manifolds. with the proper ports for a 3500

[hookdonspeed]

are the 3500 VVT and non VVT manifolds interchangeable?

anyone have pics?

[Superdave]

are the 3500 VVT and non VVT manifolds interchangeable?

anyone have pics?

No, the bolt pattern is different.


stock 3400 manifolds fit a 3500 just fine. Port alignment is pretty good. Just make sure to use 3400 gaskets.