SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: BigTui951 on January 31, 2015, 11:26:55 AM

Title: Over transum basset headers to square exhaust ports on 454
Post by: BigTui951 on January 31, 2015, 11:26:55 AM

I want to go with over transum headers but all have round ports... My engine has square exhaust ports. Do i have to change the exhaust ports or are there adapters

Title: Re: Over transum basset headers to square exhaust ports on 454
Post by: GT Jets on January 31, 2015, 11:40:15 AM

Quote from: BigTui951 on January 31, 2015, 11:26:55 AM

I want to go with over transum headers but all have round ports... My engine has square exhaust ports. Do i have to change the exhaust ports or are there adapters

As long as the round port completely covers the square, you are golden.

There are times when major (and imho incorrect) porting on the exhaust ports had been done that you may need to find some blower headers. But this is rare.

GT

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