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post #1 of (permalink) Old 08-30-2000, 05:24 PM
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long block/small block question

I'm sorry for the dumb question, but I really don't know much about engines. What's the difference between a small block Chevy and a long block Chevy engine. I thought the difference was size, but a couple of engine builders I talked to said that the long block isn't bigger than the small block. The reason I'm asking is that I want to put a 350ci into my YJ and I have a friend with a long block for really cheap. What's the difference? Will it fit?

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post #2 of (permalink) Old 08-30-2000, 05:31 PM
 
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Re: long block/small block question

its confusing terminology.

Short block Vs long block
these terms are used when buying rebuilt engine blocks, short blocks are simply a freshly machined and assembled block with crank/pistions

a long block, is fitted with cam/heads, all of theat stuff.

they are basically terms of 'completetion' long being more complete than short

small block Vs Big block engines.

small blocks are diminsionally smaller ( physical size the Cubic Inch Displacemtn might actually overlap)

small blocks, Chevy 283,305,,327,350,400
Big blocks Chevy 396,400,427,454

if your freind has a long block 350, its a small block chevy thats been rebuilt and needs just intake carb, and small stuff to complete and run.

hope this helps, and not confuses, its a commmon quiestion, Ive asked it too!



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post #3 of (permalink) Old 08-31-2000, 09:41 AM
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Re: long block/small block question

It's similar to a "loaded" brake caliper. The "loaded" has the pads with it and is ready to go, the "unloaded" doesn't.

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post #4 of (permalink) Old 08-31-2000, 01:17 PM
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Re: long block/small block question

Thanks guys for the info. So, I shouldn't have any problem getting the engine in my YJ, right? I already have new motor mounts from M.O.R.E..

post #5 of (permalink) Old 08-31-2000, 01:32 PM
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Re: long block/small block question

Getting it in is fine, getting it running is another entirely. [img]/wwwthreads_images/icons/smile.gif[/img]

fuel supply, ignition, wiring harness, exhaust, etc etc etc.

post #6 of (permalink) Old 08-31-2000, 01:43 PM
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Re: long block/small block question

Do you have any suggestions?

post #7 of (permalink) Old 08-31-2000, 03:00 PM
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Re: long block/small block question

The first thing you need to do is research, research, research. Look at lots of websites with engine swaps. Get Advance Adapters' information booklets. Read magazine articles about swaps and keep in mind that they paint a rosy picture of how "easy" a swap can be. All systems have to be considered. Mounting systems, electrical, exhaust, fuel delivery, cooling, etc.. You don't go into an engine swap without doing your homework first and asking what to do on this BBS doesn't count. It helps a lot but it's not enough. Take in as much information as you can and then make an informed decision about what you expect to get from the swap and how much effort and $$$$ you are willing to put forth.

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post #8 of (permalink) Old 08-31-2000, 03:05 PM
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Re: long block/small block question

Well, I have a bunch of parts already. I already have the engine, motor mounts, NV4500 tranny, Atlas t-case. The engine is a long block 350 with carb. I've never done a swap, so I'm trying to decide whether to do it myself, or pay someone to do it.

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