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  1. 8

    exhaust manifold installation Mercruiser centerrise 5.7

    I am installing cast iron center rise exhaust manifolds on my 5.7 engine. I would like to confirm my install process: clean surfaces...new gaskets, applied dry......bolt torque to 35ft lb both manifolds and riser bolts... torque in three steps to final, from inside to out.....re-torque after...
  2. 8

    Rochester carb conversion to electric choke

    I have a rochester quadrajet that is in nice shape. It has a manifold mounted mechanical choke set up. I would like to move this carb to a new vortec manifold.....which does not have a set up to mount the divorced choke. they sell kits to convert rochesters to electric, but they rely on...
  3. 8

    5.7 longblock dipstick plug........I cant get it out!

    My new 5.7 gm longblock came with a steel plug in the dipstick tube hole. I tried tapping on it with a small chisel.....no movement. I tried putting locking pliers on it to turn it.....no go. I tried drilling it with a small drill and then tapping it to put a bolt on to get a grip.....broke...
  4. 8

    5.7 vortec motor retro fitting to Alpha Bell housing and transom mount

    I am finding a clearance problem with my thunderbolt 4 distributor and the shift bracket on the rear of the bell housing. The module built into the thunderbolt distributor body is hitting against the shift plate. I can make a clearance if I use longer bolts and a spacer (about 1 1/4 inch does...
  5. 8

    shutter valves on old style mercruiser exhaust

    I have a 1979 228 Mercruiser with the old separator and two side exhaust pipes. The backflow shutters mount right at the junction of the separator and the pipe that runs up to the exhaust elbow. my question is this: I ordered the right part #(60930) and got shutters that are oval shaped and...
  6. 8

    Repowering with 5.7 Vortec long block which intake manifold and carb

    I am repowering my 1979 Century with a new vortec longblock and am looking for some advice on an intake manifold. I am in fresh water lakes in Pennsylvania and cool with raw water. also, I have a Rochester quadrajet and a newer Weber (1995 Merc 350 Alpha) 4 barrel. any suggestions on which carb...
  7. 8

    Repowering my 1979 Mercruiser: What will fit and what won't

    I have a 1979 Mercruiser with a 350 engine that is shot. I want to upgrade the motor to a new gm 350 Vortec marine engine. I bought a complete low hour 1995 350 Merc alpha engine for parts. First my old Merc had a 12 3/4 inch flywheel with the old style coupler. I plan to use my old...
  8. 8

    350 Mercruiser Engine full of water

    Hi, I am new to the forum, but have been reading great info on this site for a while. Sorry for the long post I bought a 1995 Alpha 1 350 Mercruiser for parts as the engine was listed "as low hour engine with cracked block do to only partial winterization" (the block drain plugs were not...
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