long block or short block?

Question

hey guys i just bought a 2003 350z with auto trans and was looking into doing a racing engine build. i heard sgp racing was good so i was looking over there but they had long block and short block packages. i'm new to this so bare with me, ne clue on which is the one that matches my engine like i said i am new to this.

DaddyMonkey · Accepted Answer

We will bear with you (somewhat) lollong blocks have cylinder heads, short blocks do not...You might want to look into some books first...  might havesomething for the "nissan street racer".Good Luck,Dave

James Drinkwater · Answer

Hmm.  Not sure if there's more to what you mean when you say, "which one fits my engine".  Long block vs. short block is the engine but in two stages of completion.  If what you have is in good repair, I'd say to build it up with performance externals (heads, intake, exhaust, cam, ignition, etc.). If you want to start with a new/different engine, then give 'em a call and tell 'em what you'd like to do and they can hook you up.  Now, for long/short block decision.  With the short block, you'll get your own cylinder heads.  If the long block (same as short block) has the cylinder heads you want (the only difference) then get that and skip potential headaches of mismatched components.  A competition engine is the deciding factor.  If you build your own, do the math and you'll probably get a faster/stronger engine.  Get the math wrong and you might pay a price in durability, longevity or performance drawbacks.  Good luck,  Drink

Steve · Answer

Friend, you need to do a LOT of learnin' before you start wasting lots of money. "Long block" refers to a replacement engine complete with cylinder heads, valve train, etc. A "short block" is just the engine block with crankshaft, connecting rods, bearings, and pistons installed, waiting for you to bolt on YOUR cylinder heads with timing system and valve train.

Either will require you to install all your accessories (wiring harnesses, alternator, starter, PS pump, belts, air conditioning, and in some cases oil pan, valve covers, and other "tinwork") when you put it into the car.

long block or short block?

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