Automotive Parts and Accessories: MERCRUISER EXHAUST MANIFOLD GM BIG BLOCK (CAST IRON) / GLM Part Number: 51240; Mercury Part Number: 807078Q07 - GLM Products, Inc.

Sports: OEM Mercury Mercruiser V8 454 7.4 Big Block Exhaust Manifold Assembly - MERCURY/QUICKSILVER

Sports: Quicksilver INTAKE MANIFOLD AND INTAKE PLENUM 27-805522A 1 - Mercury Marine Mercruiser

Sports: Sierra 18-1985 Manifold Spacer - Sierra

Automotive Parts and Accessories: SCREW / GLM Part Number: 21747; Mercury Part Number: 10-37612 - GLM Products, Inc.

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Mercruiser Manifolds 454 Popular Q&A

Q: What are the torque specs for a mercruiser 454 exhaust manifold t...
A: Dont know but a merck dealer can tell you But b/4 you do clean the bolt holes out and run a tap in them then put anti seige on the bolts very easy to snap off r... Read More »

Q: I need the torque specs for the intake manifold and fly wheel for...
A: try web resourceful .com for auto manuals Read More »

Q: How to Replace the Intake Manifold Gasket on a Chevy 454.
A: 1. Place the engine coolant drain pan beneath the radiator, open the drain petcock and begin draining. 2. Remove any wires that prevent the intake manifold from... Read More »

Q: What does the timing on a 454 mercruiser need to be set at?
A: I have seen specs as high as 13 degrees but that seems a bit high to me. I would settle for something around eight degrees. That way you will be reasonably safe... Read More »

Q: What is wide open throttle on a 454 cu in mercruiser?
A: MerCruiser's 454 MAG MPI cranks out a potent 385 propshaft Read More »

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