Hi,
Does anyone have experience of Exhaust Manifolds 3909879/3916178 for Big Blocks,
those who are newly manufactured and sold by Tamraz or GM Restoration Parts?
Are they good enough to have on a 427/425hp?
//Gus
Just put them on my Copo . The fit was perfect, no problem at all.
Thanks, sounds good.
Not noticed any problem performance-wise?
/Gus
This was a fresh restoration, so I had nothing to compare to.