header / manifold options for 225 V6

Finally getting around to swapping-in the Buick 225 V6 and the SM465. Have done a lot of searching and reading, but wasn't able to find anything definitive. What are the best manifolds or headers to use with this engine? Know that steering components can cause fitment problems - going to be installing some kind of crossover steering, probably a saginaw box with a forward swinging pitman arm.

 

:iagree:

 

Thanks Warloch. Read about the design work you did with Novak to develop those headers. Looks like you did a real nice job. Wasn't able to find much info about the different manifold options though, except I read vague references to things like 'flat' driver's-side manifolds and rear-dump vs. front-dump manifolds, etc. Would love to hear a little bit more about the differences between all these different manifolds, and would appreciate some info about what vehicles to find them on. Pictures would also be awesome. Thanks.

 

Have some kind of outside-the-framerails headers that came with the engine, but don't want to use them. AA makes inside-the-framerails headers? Don't see anything about those on their website. Wasn't able to find any pictures of anything but the Novak headers on your website either. My main concern about those Novak headers is how/where they dump on the passenger's-side and interference between the exhaust and the driveshaft / axle at full compression.

 

Here you go. http://www.advanceadapters.com/products/pn-717041/

 

Thanks! Those look just about perfect. Anybody have any pictures of those AA headers installed?

 

im assuming there is nothing available that directly replaces the manifolds . Front dump with ross box and inside rails ?

 

http://www.earlycj5.net/forums/show...s-done-at-least-my-part&p=1027367#post1027367

There was a thread a couple of weeks ago with those installed in a rolling chassis. I think it's in the early forum. Look a few pages in. As far as the Novaks go, there's no issue with interference on the passenger side until you cross over or continue back along side the rear driveshaft. I chose to go over the TC flange which has proved to be a good choice. No interference, doesn't touch the tub, and is out of the way of off road debris. If you go along the driveshaft you'll need a real skinny muffler. I used a dual 2 1/4" in/single 3" out Flowmaster 50 series on the passenger side. I used mandrel pipe and pie cut some bends to make my turns. Above thread has some pics.

Add- I ended up cutting just above the flange after those pics. I also cut at the muffler and added another pie cut above the TC to raise the pipe some. It was just enough and I'm very happy with the results.

 

Are you talking about this thread? Didn't see any AA pics and didn't find anything else in 10 pages...

 

Here http://www.earlycj5.net/forums/show...frame-headers-for-buick-225&highlight=headers

 

Thanks! Think those AA headers look like they might be my best bet.