Water cooled center discharge Exhaust Manifold that fits GM 427 cid 7.0L, 454 cid 7.4L, 502 cid 8.2L big block V8.
The riser Mounting Pad on this Manifold is 3-5/8 x 5-5/8 and the bolt centers are 2-5/8 x 4 Inches.
The water enters the front of this manifold, not the bottom.
Barr part #: CHVA-1-84
Mallory #: 9-40102
Sierra #: 18-1898
GLM #: 56240
Fits Barr, Indmar and Marine Power GM Big Block V8 with 4-bolt risers.
This style manifold was used to convert many expensive exhaust systems by customers.
This is NOT a Mercruiser style replacement exhaust.