Stage 2 Headers

[Buickrat]

I am going to have a set of stg2 headers made with mean Mikes flanges, on my 87 GN, hopefully this December. When I have the first set produce we are going to produce a jig so we can reproduce them in multiply sets. No price as of yet, I will keep you posted as the project gets going. I do not know how these will compare to the ones made in China as far as design. I am going to structure them like the TA headers for the standard heads. I have not decided on the tube size yet but, I am leaning between 1.62 - 1.75 If interested let me know.

 

[norbs]

The log design will become restrictive compared the ATR design 2 into 1, but for a street car it should spool well. I would think around 750 hp it will start becoming an issue. I think 2.5" diameter pipe for the log would be a goods start, considering the TA headers are 2" ID only,

 

[Buickrat]

Thanks for your input, I am building a bottom 10 second street car so 750-800 HP is my target, I like the TA design do to minor fitmit issues and spark plug access. I would like to improve on the TA design for a streetable Stg2 street car.

 

[norbs]

Thanks for your input, I am building a bottom 10 second street car so 750-800 HP is my target, I like the TA design do to minor fitmit issues and spark plug access. I would like to improve on the TA design for a streetable Stg2 street car.

This is just my opinion, I think 1.75 tubes would be a good size for the primaries also.You may want to use 321 stainless and 347 filler rod and purge all your pipes, etc.

 

[WHITE T]

Not to hijack, but I will be posting a set of the Conley Stage II headers for sale in the next day or so.

These are brand new if interested.

 

[Buickrat]

The passenger side looks like the spark plugs will be difficult to get to and the down pipe will get in the way of the transfer pipe.