Exhaust manifolds upgrade
 

I'm looking to upgrade the exhaust manifiolds on my 1998 Baja 24 Outlaw 454 for much better sound. Does anyone have experience with the Seaward Series Bravo Big Block Exhaust System 620-38035?

My friend installed some last year on his 454 Mag MPI. It gave him some rpm so he is now hitting the rev limiter and needs to go to a higher pitch prop. And it did make the sound louder and deeper somewhat. Not like full headers but noticeable deeper tone.

I had them on a 7.4L and transferred them to a 502 mag. Didn't notice that much of a sound difference if you have thru hull exhaust going from OEM to them.

I have a pair of used CMI E tops. Stainless with Satin finish. Came off my Velocity VR1 when I had the engine rebuilt as a 540.
Here is a description.
Teague Custom Marine | CMI 454/502 E-TOP Headers - Satin Kit https://share.google/7hxL72r51XBelNnCj

Padraig

Is it strictly for sound? You won't notice a sound difference at all unless you get dry to the tip style headers, not from a manifold

That said, it's lighter and better corrosion resistance, so if you are replacing them anyway they are a good OEM replacement

Thank you for the feedback

Yes I want sound, louder than stock. Thank you for the feedback.

Sounds like I need headers for louder than stock sound.

Thank you for the feedback. I need something for louder sound than stock.

Thank you for the feedback.