Ok could a car muffler shop just make me a peice or does it need to be rubber Marine exhaust hose
no, a car muffler shop wont work, most are crush benders which have an 8" internal bend radius. you need mandrel bent marine exhaust pipe with a tight radius in the 4-5" range. the material which is normally 316 stainless. however if you are in fresh water, 304 would be acceptable. you will need the ends beaded to retain the hoses.
seriously doubt you have room for two 45 degree elbows. maybe two 75 degree elbows or two 90 degree elbows.
I don’t know the history off the boat to be honest . I just don’t see this big of a boat having a small block . I definitely want thru hull . What do you think would be the easiest way to achieve ? The elbows or headers ? Where is the best place to buy headers or elbows?
bigger boats have had small blocks. if the boat was newer, it could have had an LS motor in it.
what is the spacing on the exhaust pipes out the transom?
32"? 33"? 34" ? 36"?
best place to buy headers is fully dependent on your pocket book. off the shelf units like Lightning, CMI, or DANA will run you about $2k a set - check out CP Performance and Hardin Marine for example. semi-custom units will be in the $3500 range, however custom headers would run you about what you paid for the boat if not more
other alternatives are going to something like EMI or Stainless Marine for one of their manifolds and having custom elbows made. I spent about a month working on the custom elbows and exhaust for my boat with a fabricator friend. Should I have had to pay a custom marine company for it, I was told it would have been in the $7500 range.
