1 vs 2 Piece Rear Main Oil Seal--old vs new block

[stevehendo34]

So I want to swap out my cracked block 305 with a 350 smallblock.
If I use a 86+ motor can't I just use a Rear Main Oil Seal Conversion thing 2pc crank and it will be fine?
http://www.circletrack.com/enginetech/ctrp_0712_rear_main_seal/viewall.html

Will my exaust manifolds work ok?

Will the rest off the stuf from the 305 go over to the new style 350?

I also plan on changing the cam, putting in a new scat 2pc crank and rebuilding the 1987 350 I took out of my rusted our Chevy Suburban.

It would be cool if I could run the TBI fuel injection on it but I suppose that would explode in the boat?

Also it wierded me out that the dipstick on my 78 century is on the passanger side. I thought it was on the drivers side this year in a car. Any comments on this?

Sorry I read the stickys to find out the year interchangability and could figure it out.

 

[stevehendo34]

Re: 1 vs 2 Piece Rear Main Oil Seal--old vs new block

Ok the flexplate problem should be taken care of with the 2pc crank but not engine coupler starter or oil pan.
I'll scraap this idea and look for 85 or older engine.

 

[Bondo]

Re: 1 vs 2 Piece Rear Main Oil Seal--old vs new block

Also it wierded me out that the dipstick on my 78 century is on the passanger side. I thought it was on the drivers side this year in a car. Any comments on this?

Ayuh,.... Which side is That,.... Boats have a port-side, 'n starboard-side....

In '79, Chevy swapped sides of the dipstick...

 

[TilliamWe]

Re: 1 vs 2 Piece Rear Main Oil Seal--old vs new block

Fuel injection is a completely different beast in marine use and the existing programming from a car/truck won't work very well at all and they require an O2 sensor in the exhaust...

However, Mercruiser did use GM TBI for a few years. My 1997 5.7LX EFI Gen + had it. No sensors required, and it worked Great. But it did have its own control module, which you won't have, as Bubba points out.

Intake manifold on a 1986 to 1995 engine is different than the older ones. Two center bolts on either side are at a 72 (or something) degree angle.