Looking for advice, BB headers vs. HP manifolds
I'm going to say this up front, I skipped all the replies, and I have a B-Body (70 Roadrunner) manual transmission.
I got polished, ceramic coated TTi headers. Unless I need larger primaries (1&⅞" is my current size) I will NEVER need to replace them.
I see AndyF has offered advice, and it's hard not to say "Take it".
As far as power gains, headers vs manifolds are one of the triad of FUNDAMENTAL power adders: intake/cam/headers.
Now, given my 440 is a 6bbl, I would substitute cylinder heads for an intake swap, because my aluminum 6bbl intake is pretty badass for factory. Having said that, I am giddy that after a year of mind shredding internal debate, I finally succumbed to the Siren-like lure of the Weiand P3690982 "pro stock" low profile tunnel/cross ram. The first time I remember noticing it, I saw a F&B 3x2 EFI direct port injection version of it, and I haven't been able to get it out of my head since. Blame @mosleyme ...lol.
Get the TTi headers, and be happy...
Life is short!
I'm going to say this up front, I skipped all the replies, and I have a B-Body (70 Roadrunner) manual transmission.
I got polished, ceramic coated TTi headers. Unless I need larger primaries (1&⅞" is my current size) I will NEVER need to replace them.
I see AndyF has offered advice, and it's hard not to say "Take it".
As far as power gains, headers vs manifolds are one of the triad of FUNDAMENTAL power adders: intake/cam/headers.
Now, given my 440 is a 6bbl, I would substitute cylinder heads for an intake swap, because my aluminum 6bbl intake is pretty badass for factory. Having said that, I am giddy that after a year of mind shredding internal debate, I finally succumbed to the Siren-like lure of the Weiand P3690982 "pro stock" low profile tunnel/cross ram. The first time I remember noticing it, I saw a F&B 3x2 EFI direct port injection version of it, and I haven't been able to get it out of my head since. Blame @mosleyme ...lol.
Get the TTi headers, and be happy...
Life is short!