Merc 5.7 short block or long?

[crawdadric]

1985 Sea Ray SRV 300, Twin 5.7 Mercruisers with Alpha 1 Outdrives. S/N 0M086315 and 0M086308.

Rookie question - Is a 5.7 liter engine considered a short block or a long block?

Thank you in advance..

 

[Don S]

Re: Merc 5.7 short block or long?

A short block is the block, crank, cam pistons and rods all assembled.
A long block is all of the above, plus the heads and sometimes an intake manifold. Usually includes the sheetmetal items (Timing cover & oil pan)
This is the same rather it's a 3.0L , 4.3, 5.7, 7.4.
The terms are not engine spacific.

Long Block

Short Block

 

[Silvertip]

Re: Merc 5.7 short block or long?

I think he really meant to ask whether a 5.7L engine a "small block" vs "big block". It that was the question -- the 5.7 is a GM small block. If that's not what you meant to ask -- what Don said applies.

 

[calwldlif]

Re: Merc 5.7 short block or long?

Don you da man
You post the best pix 8)

 

[peacekeeper6]

Re: Merc 5.7 short block or long?

hey the 5.7 i have is the basic short block, could you upgrade to an LT1 type engine to get more horses?

 

[Reel Poor]

Re: Merc 5.7 short block or long?

snakethis69 you will get better results on your question if you start your own thread.

 

[crawdadric]

Re: Merc 5.7 short block or long?

Silvertip,
You were right. I was reading over some recent posts and came across a reference to 5.7L small block and that got me thinking of my old post. When my post went to page two, I lost track of the replies. I am glad that you cleared up the small block and glad to learn from Don about short block and long block. It’s all coming together for me now.
Thank you - Everyone....