Hi

I have bought a set of EMI thunder exhaust for a bigblock, and i wonder what the thread size is in the holes in the manifolds where i attach the risers ?

thanks

Erik

3/8 x 16..i usually run a tap through them first,,chitty QQ

The Quality is one of the finest out there it's the hard-coat anodized process that they do adds to the threads that where taped before they where hard-coat anodized.
The hard-coat anodized makes them tight they are the best out there for there price With the stainless risers they preform just as good or better as any other one out there. and even come with a five year warranty. As long as you don't over heat them with no water
http://www.eddiemarine.com/techsuppo...502_5483_3.pdf
And yes i know all brands claim there the best out there when they post dyno runs

I'm a dealer for EMI's, i knew about the anodizing, i just like to retap the threads @ the risers before i install them..

thanks for the help / Erik

If your dealer why are you you selling there Chit! if it's
in your words.. ,,chitty QQ nice to see you care!
I'm sure Eddie thanks YOU for the good things you have to say about there product!