Help with choosing proper header bolts

[PenguinGT]

Can anyone confirm for me that the header bolts are 8mmX25mm 12pt?

Thanks!

 

[SoundGuyDave]

I'm using the Stage 8 header bolts, 8mm, 1.25 thread pitch, and I do believe they are 25MM. Mine are hex head/socket combos with the groove for the locking hardware.

 

[thump_rrr]

I prefer Breslin bolts to stage 8. They are available at Jegs.
http://www.apo.com.au/products.html

 

[andyman]

I prefer Breslin bolts to stage 8. They are available at Jegs.
http://www.apo.com.au/products.html

what is the part number?

 

[thump_rrr]

what is the part number?

008-027 or 608-027 for stainless steel.

 

[SoundGuyDave]

Nice! I wish I had know about those a week ago...

 

[Windveil Blues]

No kidding... I just received my Stage 8 bolts... and they are a pain in the ass to install on an S197 4.6, too.

Jim

Nice! I wish I had know about those a week ago...

 

[SoundGuyDave]

I only had problems with three out of the sixteen... lower rear two on the driver's side, where the tubes on the ARH headers curl under to clear the steering linkage, and the front lower on the passenger side, where it's hidden (quite effectively, I may add) by the AC compressor. In those places, the other design would be as much of a PITA, trying to squeeze an allen-key in there...