Engine swap header question

[Russ Knight]

Hello everyone. Starting an an engine swap project and have a header question. Going to be swapping a 1971 340 with a six pack setup with a built 727 into a 2004 Dakota. The following information is irrelevant to the header question, but just wanted to let whoever may be interested know what my plans are in case anyone wants to offer guidance. Already purchased the motor mounts and transmission crossmember, will be using Trick Flow heads, stock rotating assembly, Howards Cams hydraulic roller cam (.525/.525 lift) and lifters with Harland Sharp roller rockers. Question is, does anyone know if a set of long tube headers will fit. I really don't want to use shorty headers but may be forced to. Thank you in advance and I'll be sharing pictures soon.

 

[niceolddart]

I don't know about long tube headers, they may be worth the trouble but, for the cost, power gain & hassle shortie headers are, they are NOT worth it. If you have to go the shorty header route, stick with the stock exhaust manifolds. I THINK stock Magnum V8 manifolds would fit a 340 no problem & I believe the ones from a 92-93 are best, with larger manifold to head pipe diameter, (3" I think) & flow damn near as good. Shorty headers are a hassle that aren't worth the minimal HP gain you get from them in my opinion. I'm working on a friends 03 Dakota R/T with shorty headers & they are a PITA, especially the passenger side!

 

[Russ Knight]

Good information, thank you!!!