There is another dyno test between manifolds and found that best combo was one 340 and one 5.9l forget which ones but here's non magnum manifold and header shoot out
Oh yes! Thanks remember. Well, on THAT particular combo, the 360/300, the call of exhaust is for the owner. 311 or 327 hp, 403 or 425 ft lbs of tq.
That’s 16 hp & 22 fr lbs of tq to decide on between exhaust manifolds and tti headers. Which will make more power once you out there exhaust system on. They stated no collector extentions on the headers. All on a stock engine.
No Magnum manifolds tested. So I’d still like to see what that deal is worth. Anybody?
The factory writings stated the best exhaust manifold combo was the drivers 340 & Magnums passengers side. I still see it loosing to headers. But the owner/operator & spender of money will have to decide if it is worth it.
