mag 350 exhaust

chiller time

New Member
Aug 11, 2009
3
southeast michigan
Boat Info
1977 srv240 fly bridge
Engines
350 mag w/alpha 1 drive
putting mag 350 in 77 srv 240. problem is 4 inch center manifold covert to the 3 inch y pipe. looking for elbow or kit. any ideas??
 
Find a mid 80s (85 to 88) Mag Y. The drive is an Alpha I assume so that should do it. The other thing to do is find some 1983 Merc 3" exhaust elbows. Available aftermarket everywhere. They should fit on the manifolds.

However, the only real difference on the old Mags vs the 260 was the exhaust so if your gonna choke it down by going thru the drive or by reducing the elbows, you're not getting the benifit. Why not go thru hull with the exhaust?
 

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