95 crownline 4.3 bad block

[SHELBY3]

bought a 95 crownline 4.3 , very low hours, they did not winterize , tore apart cracked both sides by oil gallarey, internals look brand new, which s10 block will work? casting no 16227196 merc ser no of587082 heads are 10238181 ao55 and ao45 timming cover has 10 bolts pan has 12 and 4 studs , is a vortec , balanced shaft

 

[jfcar]

Re: 95 crownline 4.3 bad block

I thank you would need to use your old engines cam (for correct RPM range), intake manifold and carb., starter, alternator, and any other marine non auto part. Should work.
John

 

[SHELBY3]

Re: 95 crownline 4.3 bad block

Yes , I Know That But Which Blocks Are Compatable , Aka Years, Done Some Research The 4.3 Is A Nightmare On Years, Im Going To Use Everthing From Boat Engine , Just Need A Block Thanks Tim

 

[chiefalen]

Re: 95 crownline 4.3 bad block

I'm gonna take a wild guess 94-95 block.

 

[jfcar]

Re: 95 crownline 4.3 bad block

If your block has vortex heads you will have to get a block with vortex heads, and same with older heads, if you are going to use your heads. If you have mechanical fuel pump you may have to convert to electric, auto converted to electric a lot earlier then boats and have no place to mount machanical fuel pump. Then If engine couper (rear) and water pump fit then block should work.
John

 

[Bondo]

Re: 95 crownline 4.3 bad block

If your block has vortex heads you will have to get a block with vortex heads, and same with older heads, if you are going to use your heads.

Ayuh,.... I think Not....
The block doesn't care at All whether you use Vortec heads or not....

1995 is Pre-Vortec Heads, They were putting the Vortec name on the valve covers even before the actual combustion chamcer was released in 1996...
But I think the mechanical fuel pump was gone by then....

Tim,...
Where are you going to be Looking for this block,....
About Any Machine Shop, or Wrecking Yard can tell you which years interchange with what...

 

[180shabah]

Re: 95 crownline 4.3 bad block

Yup, fuel pump boss dissappeared the same time the balance shaft was added.

 

[chiefalen]

Re: 95 crownline 4.3 bad block

You got a salvage yard near you, that you can trust to give you a good block?

Go over it with a magnifying glass. Pay attention to the mating surfaces of the heads, bolt holes ain't pulled up etc.

No hairline cracks on the sides maybe painted over. Cooling holes Etc.

Talk to the owner explain what you want to do, and see if it is bad after you get it home, will he switch it out for another one, most guys see a younger person they understand.

 

[SHELBY3]

Re: 95 crownline 4.3 bad block

had casting no in first post local dealerships machine shops tell me that cant tell them what year, have a line on a 97 4.3 with vortec heads will that work? if i change all my guts

 

[Bondo]

Re: 95 crownline 4.3 bad block

have a line on a 97 4.3 with vortec heads will that work? if i change all my guts

Ayuh,... Maybe,....

You probably would do Better if you just leave the new motor's "Guts" Alone......
Just swap over everything that's bolted Onto the block, Not everything that's bolted Into the block...

There's alittle More to the fitment Issues of taking the "Guts" of 1 block that have been running together for Many Hours,+ putting the in a Different Block that's had a different set of "Guts" running in it for God knows how many Hours.....
It just Won't Last....

 

[chiefalen]

Re: 95 crownline 4.3 bad block

Just replace the casting/ freeze plugs with brass ones cheap maybe 5 bucks.

Leave the guts alone.

Of course the flywheel, coupler, got to be changed over, you know the drill.

Fuel pump, alternator, if they were marine ones on the old block, got to be changed over.

Oil pan good on the new one? Paint the heck outta it after you clean it real good.

Heck paint everything when you get it home before you start changing everything and it's stripped down.

For that paint i used rustoleum high heat paint in the shake can. 2 cans will do nicely.

I even paint my starters, 3 -4 times, and the alternator, i tape the screen and paint that good also, but thats me.

Good luck !