Headers vs oem manifolds
So we are new to this forum and to the motorhome world also. I'm having to replace the heads on our ford 460 and seriously considering a banks exhaust instead of the oem manifold which I suspect trash...
Forum Discussion
booty51 wrote:The numbers that I have before and after are as follows: Before Thorly Tri Y Headers my 40-60 mph time was 19 secs after headers and free flow muffler 40-60 time was 12 secs. To me that is significant. It translated to less downshifting on hills, less heat build up, and no more manifold problems. I had the gaskets replaced when I bought the MH the following year the oem manifolds cracked. My recommendation is if your having manifold problems don't spend the money twice like I did just go with the headers. I also would like someone to post before and after results of Banks so that folks could compare to help their decision.
don't expect huge gains in milage . If it improves a couple of tenths you should be happy. Any of you have numbers of before and after installation. Mine came with a banks so I have nothing to compare it to. If you have the funds changing heads or waking your present heads up would be a big benefit.
booty
