Quick Answer: How Can You Tell If You Have A Big Block Chevy?

How do I know if my Chevy engine is a 454?

How to Identify a GM 454Identify the year and model.

Look for decals on the engine.

Locate the engine ID number located at the front of the engine block on the passenger side.

Decode the ID number.

Verify the casting numbers from either the cylinder head, intake manifold or crankshaft..

How do you tell the difference between a big block and a small block?

A big block engine is physically larger and weighs more than a small block. [4] Larger bores, longer strokes, bigger valves and ports can lead to truly astounding power production. If a small block is a quick and nimble welterweight boxer a big block can be devastating heavyweight.

Is the Chevy 454 a good engine?

The Chevrolet 454 remains a favorite among performance enthusiasts because of the its power output and the availability of aftermarket parts for the engine.

How do you tell if I have a 305 or 350?

By far the easiest way would be to pull a head and measure the bore. A 350 will have a 4 inch bore ( as would a 327 or a 302) while a 305 will have a 3.736 in bore. The difference is very pronounced once you know what you are looking at .

Is a 400 small block better than a 350?

A small block 350 and a 400 have an identical block design. Most accessories will fit either engine. The major difference is found in the casting numbers and the way they are balanced. Most 350 cubic inch engines are internally balanced whereas the 400 engines are not.

How can you tell the difference between a 350 and a 454?

Re: How do you tell the difference between a 350 and a 454? BBC has flatter, wider looking valve covers. Look at the side of the engine, and the exhaust to spark plug orientation.

What year is the best Chevy 350 engine?

L31 (2002) From a purely technical standpoint, the most recent version of the Chevy 350 would naturally be the best of the bunch. Marketed as the “Vortec 5700” engine, but known internally by the moniker of L31, this engine was used primarily in GM vans and trucks until 2002.

How much power can you get out of a 454?

With its relative light weight and plentiful aftermarket performance parts availability, it is not uncommon to perform upgrades resulting in greater than 400 horsepower. In fact, in competition configurations, this engine platform can achieve well over 1.5 horsepower per cubic inch.

Is a 396 a good engine?

The 396 is a good revving engine, so you’d want to run a steel crank so it would live at the rpm you’d have to run it to make HP. And probably a roller cam, as flat tappet cams in big blocks have a nasty habit of “going away” relatively easily.

How do I know what Chevy engine I have?

Look for the identification number on the engine block. The identification numbers on a Chevy engine with a small block V-8 are adjacent to the cylinder heads on the passenger’s side, close to the front of the engine block. Look closely because the alternator blocks the identification number.

How much horsepower can a 2 bolt 454 handle?

Horsepower Enthusiast The 2 bolt Big Block Chevy blocks are fine for anything up to 6500 RPM and 600 HP.

How do you tell a 327 from a 350?

The compression height of the piston (1.67 for a 327; 1.56 for A 350), or the casting number on the crankshaft should tell you what it actually is.

What’s the best Chevy big block?

10 Most Powerful Production Chevy Big Block Motors454 LS5 390 hp. Chevrolet brought out the 454 Big Block just as the curtain was lowering on the Classic Muscle Car Era. … 427 L36 390 hp. … 427 L68 400 hp. … 427 L72 425 hp. … 396 L78 425 hp. … 427 L88 430+ hp. … 427 ZL1 430+ hp. … 427 L71 435 hp.More items…•

Will a 700r4 hold up to a 454?

Like said have the trans built up for the 454 it will handle it fine. I have seen a 700r4 built up live 2 years and counting behide a 4bt Cummins which makes the torque of a big block. Re: 454 to 700r4? Yeah a stock 454 won’t kill a stock 700r4 unless you’re planning on towing with it or hot rodding the 454 some day.

How much is a Chevy 454 engine worth?

Around here typical bare engines are in the $1000-$1500 range. Just the block is worth $500. A complete running engine (old and tired) can fetch at least $2500 with all the brackets etc. I’ve seen pickups that aren’t worth $500 sell for $1500 just because they have a big block.

What size is a 454 bored 30 over?

SO assuming a 454 bored . 030″ it should be around 462 cubic inches.

Will 454 heads fit on a 396?

By the way. Thats what the heads were for. All big block heads will bolt up without problems with the valves hitting anything. I would advise against putting 71 and up 454 heads on a 396 since they have open combustion chambers unless you have a big dome like the factory 396/375hp piston.

What’s the biggest small block Chevy engine?

LSX454The largest-displacement small-blocks ever produced by GM are the LSX454/LSX454R crate engines offered through Chevrolet Performance, at 454 cubic inches (7.4L); the largest-displacement small-block for a production vehicle is the 427-cubic-inch (7.0L) LS7 used currently in the Corvette Z06.