Looking to replace Stainless Marine manifolds with headers
#1
Thread Starter
Registered

Joined: Aug 2010
Posts: 2,227
Likes: 547
From: Cape Coral FL
I bought a boat that has SM gen3 manifolds on it and would like to replace them with headers. It has a set of custom tails built for it and I don't want to have new ones made. Is there a direct replacement header that I can use with my existing tails?
#6
Registered

Joined: May 2009
Posts: 3,895
Likes: 123
From: Chicago, IL; Onekama, MI
No there are no headers that you can use your current tails with. They will work on one thing only- SM3 manifolds. If you are running a blown engine you will gain nothing by switching to headers. I was talking to a friend of mine that has a shop that builds a lot of high HP blown engines and he said the only thing that might make more power than SM3'S in a blown application are big tube CMI's. This was proven over and over on the dyno. Even then the power increase is minimal and he never recommends stainless headers. Not worth the cost or the headaches.
#8
Registered

Joined: Feb 2009
Posts: 8,356
Likes: 1,515
From: NW Michigan
Powder coat or good paint. Keep the hatch down and run. I mean run hard. Leaving your engine hatch open at a marina just leads to BS conversation and cuts into good drinking and booty time. Fk that.
#10
Banned
Joined: Jul 2011
Posts: 9,594
Likes: 45
From: Ft. Worth TX
Give Stainless headers a call they are helping us out with our new build for the headers.
link right below and tell them, the guy with the 2017 Lavey Craft sent you over THANKS AND for anyone else the same.
http://www.stainlessheaders.com/
link right below and tell them, the guy with the 2017 Lavey Craft sent you over THANKS AND for anyone else the same.
http://www.stainlessheaders.com/
Last edited by BUP; 01-18-2017 at 08:46 PM.



