Exhaust Manifolds #879 #178

[BowtieSweden]

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

[1971ls6]

Just put them on my Copo . The fit was perfect, no problem at all.

[BowtieSweden]

Thanks, sounds good.
Not noticed any problem performance-wise?

/Gus

[1971ls6]

This was a fresh restoration, so I had nothing to compare to.