Some very good points there. I really appeciate everyones input.

I'll email pang at Pfab and see what he has to say.



The arp studs and these stage 8 fasteners do sound like a really good idea for the future. Where would I get them from ?


Ps can't believe I'm spending more time and money on this lol! !!

 

My Pfab manifold cracked saturday I believe. I contacted Pang on Sunday and shipped the manifold out yesterday. PFab is awesome to work with. I just hope he flattens out the flange cause it didn't look too flat when I took it off.

I would also like to know what part number the arp studs are. Are they the same length as stock? That's important because like razzele, my manifold is hard to work around.

 

I had the same problem. My Pfab Log mani came brand new warped. I got it milled 2mm exhaust leak, and bolts losening up was solved.

 

The sad thing is i had mine refaced already, as it arrived all crooked.

 

I wonder if this is why full-race slits all there manifolds? Maybe it helps disperse heat and prevent warping. I was down at their shop and noticed all the manifold had slits cut into the head flange.

 

i ordered my stage 8 fasteners from summitracing.com sorry i do not have the part number right now (the box is in the garage so i can find it if you need it).
i will be getting arp studs before i put my new manifold on so I am also interested in the part number if anyone else has it.