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Short Block Long Block [Merged 1-8]

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Short block is the bottom end. (Block, crank, rods, pistons) A long block is a short block with a head or two attached to it. Or four if you have one of those new VWs.
 
What's the difference? I've always heard people say like "a short block chevy engine..." or something along those lines, but I don't know what the difference is between a short and long block.
 
short block = bottom half of the engine
long block = bottom half of engine plus top half of engine

short block = block, pistons, rods, crank etc
long block = short block plus the head, valves, cams,s pring retainers etc.

long block is basically the whole engine, minus excessories
 
Short block = Complete block
Long block = Complete block + complete head and usually the timing junk

You hear the domestic guys saying they prefer a small block chevy engine vs a big block. That is a Chevy thing only.
 
is it just saying that a long block is a 7 bolt and the short block is a 6 bolt a little confused on this

im thinking of just rebuilding and boreing out a block and start from scratch instead of a slow steady build

and knowledge will be appreciated
 
A longblock includes the head, oil pan, fully timed, ect. Short block is the block, pistons, rods, and crank. What set up are you looking to do?
 
badluck7070 said:
is it just saying that a long block is a 7 bolt and the short block is a 6 bolt a little confused on this
Not at all. The 6 and 7 refer to how many bolts hold the flywheel on to the crank. My Datsun 2000 Roadster is a 12-bolt. Any motor can be had as either a long block or a short block.
 
Alright, heres the scenario. This summer I am planning on rebuilding my engine for a turbo kit. I was givin the idea on another forum to instead of paying for labor to have my engine pulled/rebuilt/put in, i could buy an engine block and do all the build up myself, then bring it to have them switch them out. I thought this was a good idea. But now I'm reading about long and short blocks. What is the difference? I thought a 420a was a 420a? Will both engines fit w/ stock motor mounts? Which one is better? Would there be a power difference or any parts that only fit a short block and only fit long blocks? And i saw that either slowboy or howell ( I've been looking at both alot so i forget which it was, maby both ) offer 420a long and short blocks for 2000 dollors!! Now i can go to my junkyard and get a block for 100 bucks! Does this engine block come with any internals? Basically i just wanna know what makes it cost 2Gs and not a 100?Thanks for any Input.:rocks: keep on rockin!
 
If You have the know how to build the Motor, I would suggest just doing the swap yourself as well. It is pretty straight forward. And save a lot of money.
Mike
 
I feel kind of stupid asking this, and if you want to bash me feel free! But what is the difference between a long block and a short block?
 
short block is the block crank rods and pistons assembled and a long block is all that plus an oil pan and head cams ect.
 
Long block does not always include cams, generally it is the shortblock + cyl head(usually includes valves, rarely includes cams). It really depends on where you get the engine from, some places include stuff others do not.
 
So technically its the same block. One block isnt shorter or longer or anything like that right? I wasnt sure if a long block could be some kind of stroker kit thing or something like that, and a short block would be stock. But since a long block just has more stuff that goes along with it, it seems like a better name would be a "complete" block, or a "full" block, and a short block should be considered something like a "partial" block, or something like that.

Does anybody see where im coming from, or should i just keep my trap shut so i dont get laughed at--------->:tease:
 
2DaTrakNow said:
So technically its the same block. One block isnt shorter or longer or anything like that right? I wasnt sure if a long block could be some kind of stroker kit thing or something like that, and a short block would be stock. But since a long block just has more stuff that goes along with it, it seems like a better name would be a "complete" block, or a "full" block, and a short block should be considered something like a "partial" block, or something like that.

Does anybody see where im coming from, or should i just keep my trap shut so i dont get laughed at--------->:tease:

I will admit, I chuckled.:D But, I thought the same thing at one time so I am not going to make fun of you now.

I grew up around a bunch of domestic chevy guys so a lot of the terminology came early for me.

Now you know though.
 
Here is just a quick example. These are from sbr.

Short block
4g63 stock 6 bolt short blocks includes:

• ARP Rod Bolts
• 8.0:1 Topline Pistons
• Stock 6 Bolt Rods
• Topline 6 Bolt Main Bearings
• Topline 6 Bolt Rod Bearings
• Block Surfaces Are Fully Decked
• Balance Shaft Block Off Bearings Installed



Long block
4G63 6 Bolt Block ( 7 bolts available upon request )
2.0L Crankshaft
85.5mm Bore ( .020 over )
Stock 1G Big Rods, fully shot-peened and magnafluxed
Ross Racing 8.5:1 Pistons
New Topline Front Cover w/ Oil Pump Gears
Balance Shaft Eliminator Kit
New TRW Water Pump
Motor Mount Driver Side
Cometic Head Gasket
ARP Head Studs
Timing Belt Kit Fully Installed and Timed
Mitsubishi 4G63 Cam Gears
Mitsubishi 1G Turbo Cams
4G63 Oil Pan
Oil Pickup Tube

Now for the head!

SBR Stage I Head
• 100% Hot Tanked
• Fully Pressure Checked
• SBR Competition 5 Angle Valve Job
• New Valve Stem Seals
• Stainless Steel Swirl Polished, and Undercut Valves
• New Valve Guides
• Stock Springs and Retainers
• Fully Decked Head Surface
• New OEM Exhaust Manifold Studs


You can see a diffrence of what comes with what.
 
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