What is the most popular engine block size?
The most popular and prolific block, the 350, and largest stock displacement (and now relatively rare) 400-ci blocks, are the only ones you should be concerned with. These two displacement sizes differ in both the bore and stroke.
Are all Chevy engine blocks interchangeable?
As far as interchangeability from early to late blocks is concerned, this was 100 percent so long as the relevant intake manifold and valve covers were used. Apart from the principle players so far mentioned, Chevrolet also brought out a 262-inch motor, a 305 (which is now one of the most common), and a 267.
What makes a good block for a high-performance motor?
However, it’s amazing how often an inappropriate block choice is made for a high-performance motor. It might seem obvious but it’s worth stating anyway: big bores and big cubic inches will always make more usable power than small bores and small cubic inches, even if the smaller engine is turned to proportionally higher RPM.
Is there horsepower in blocks?
As you may suspect, there’s horsepower in blocks. However, it’s amazing how often an inappropriate block choice is made for a high-performance motor.
What size crankshaft does a 4.8L engine use?
How to tell if a Gen 3 engine is a Gen IV?
What is the length of the LS7 Corvette?
Why won't a single bolt cam work on a Gen 3 engine?
What is the Gen 4 ECU?
Where is the camshaft located on a Gen 3?
Where is the cam sensor on a Gen IV?
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Complete LS Engine Specs & Differences Guide
Replacing the old tried and true small block Chevy engine with a new version would not be an easy task. The new small block is known as the LS engine family and has more than successfully replaced 350's and 305's that were based in design from the 1950's. LS engines are available in a range of ...
Chevy LS3 Engine Specs - Summit Racing Equipment
Chevy LS3 Engine Specs LS Family = Gen. 4, 6.2L, Aluminum Block, Car Engines
How much horsepower can a 2 bolt block handle?
When the budget is really tight take heart in the fact a 2-bolt block can, for drag racing applications, handle in excess of 500 hp with nothing more than a change from regular main bolts to ARP main studs.
What is the first step in selecting a block?
Block Selection. The first step when selecting a block is to see whether the particular block is compatible with the vehicle the engine is going in, as well as with other parts you may want to use. If you’re building a late model motor, you may want to stay with a one-piece, rear main seal-style block.
Why are bores thin on one side?
Because of core shift during the casting process, the bores are rarely in the middle of the surrounding core of metal. It can be frustrating to find that most of the cylinder walls are thick enough to be over-bored, but just one or two cylinders are thin on one side to the point you’re reluctant to use the block. This apparent problem may not be as big an issue as you may think. Because the pistons and rod assembly have a considerable amount of leeway sideways, it’s possible to move the bores along the length of the block (the most frequent place they are thin) so that the cylinders can be bored more centrally in relation to the material surrounding them.
How many cubes did the 1962 Corvette have?
In the 1962 model year the Corvette came out with 327 cubes. This was the first of the 4-inchbore motors and set the stage for what was to become the most common bore size among small-blocks. Getting 327 inches was not just a case of extra bore diameter. The stroke was also increased from 3.00 to 3.25 inches.
What is the number 327xxx block?
The number 327xxx block (1992–1997) is not usually used because of the reverse cooling. This was used in Corvettes with a 4-bolt main and Camaros/Firebirds with 2-bolt mains. All used aluminum heads. The number-327xxx block was also used in the Caprice but with iron heads. These blocks were built in far fewer numbers.
What year did the 307 come out?
Seen here is the rear main cap on an early model block. The cap houses a two-piece, rear main bearing oil seal. The following year, 1968 , saw the introduction of the 307 engine.
When was the Chevy 350 introduced?
Since its introduction in 1955 as a 265-ci unit, the small-block Chevy has grown somewhat in size. The most popular and prolific block, the 350, and largest stock displacement (and now relatively rare) 400-ci blocks, are the only ones you should be concerned with.
What Is A 4.8 Vortec Engine?
A 4.8L V8 L20 engine falls within the section of V8 engines. This 250k-mile engine is used in full-size Chevy Silverado and Chevy trucks. The Silverado-based engine boasts a horsepower of over 195 while the Vortec can produce up to 295 horsepower on top of a 300-pound torque.
Features Of The 4.8 Vortec Engine
Enhanced mounting arrangement and a developed engine cradle make the 4.8 Vortec engine a force to be reckoned with. These factors minimize vibrations passing into the passenger/driver’s unit from the chassis. A few features of this engine include:
4.8 Vortec Engine Problems
The engine knock sensor can be found on top of the intake manifold and that bit responds to vibrations the engine makes. Much like the name suggests, the knock sensor detects and stops engine knock. If a “ping” or “knock” noise could be heard from your 4.8 Vortec, chances are, it was a result of pre-detonation.
Is the 4.8 Vortec – V8 Vortec 4800 Reliable?
The 4.8 Vortec is a full-fledged workhouse and essentially an impressively reliable engine. The issues we mentioned above aren’t common and only start to appear after reaching high mileage, which can be the case with any old engine for that matter.
How to Fix Chevy 4.8 Vortec Engine Issues
Just as an example, here’s how to solve the engine problems of a Chevy Silverado 4.8 Vortec so you get a better idea of how repairs work in this case.
Maintenance Tips For The 4.8 Vortec Engine
Proper and regular maintenance will ensure your 4.8 Vortec engine lives a long, productive life. Follow these maintenance tips to extend its life:
Advantages And Disadvantages Of A 4.8 Vortec Engine
Interested in purchasing a 4.8 Vortec engine vehicle? You should definitely weigh out the pros and cons to make an informed decision.
What size crankshaft does a 4.8L engine use?
The smallish 4.8L engine use a specific 3.26-inch stroke while the 5.3L, 5.7L, 6.0L and even the 6.2L engines all spin a 3.622-inch factory arm. It’s also possible to interchange these cranks to allow using a 5.3L crank in a 6.0L block and balance will be close.
How to tell if a Gen 3 engine is a Gen IV?
A quick way to identify a Gen III engine is by looking for the camshaft sensor at the back of the engine , just behind the intake manifold (left). On Gen IV engines, the sensor was moved to the front of the engine (right).
What is the length of the LS7 Corvette?
Most LS enthusiasts are aware that the high-revving 427ci LS7 Corvette engine enjoyed the addition of a special titanium connecting rod. Not only is it titanium, making it both strong and light, but the length is also shorter than a standard LS rod at 6.067-inch and features a bushed small end for a full floating pin.
Why won't a single bolt cam work on a Gen 3 engine?
For example, a single-bolt cam won’t work on a Gen III engine because the cam sensor trigger wheel is not used on the newer 1-bolt cam gear. You could still do this but would require moving the cam sensor to the front of the engine with LS2 style parts.
What is the Gen 4 ECU?
Part of the Gen IV package included a faster and more powerful ECU that controls a hydraulic servo that advances or retard the cam based on engine speed and load (engines equipped with VVT). The ECU advances the cam at idle and low rpm engine operation to improve low-speed torque and throttle response.
Where is the camshaft located on a Gen 3?
The camshaft is driven by a typical gear and single-row chain arrangement at the front of the engine. The Gen III engines placed the cam sensor at the rear of the camshaft. But with the introduction of the LS2, the cam sensor migrated to the front of the engine on the front cover.
Where is the cam sensor on a Gen IV?
All Gen IV engines move the cam sensor to the front of the engine on the timing cover so these cams do not have a 1x wheel at the back. Starting with the basics, all LS engines use a 55mm core steel camshaft.
What size crankshaft does a 4.8L engine use?
The smallish 4.8L engine use a specific 3.26-inch stroke while the 5.3L, 5.7L, 6.0L and even the 6.2L engines all spin a 3.622-inch factory arm. It’s also possible to interchange these cranks to allow using a 5.3L crank in a 6.0L block and balance will be close.
How to tell if a Gen 3 engine is a Gen IV?
A quick way to identify a Gen III engine is by looking for the camshaft sensor at the back of the engine , just behind the intake manifold (left). On Gen IV engines, the sensor was moved to the front of the engine (right).
What is the length of the LS7 Corvette?
Most LS enthusiasts are aware that the high-revving 427ci LS7 Corvette engine enjoyed the addition of a special titanium connecting rod. Not only is it titanium, making it both strong and light, but the length is also shorter than a standard LS rod at 6.067-inch and features a bushed small end for a full floating pin.
Why won't a single bolt cam work on a Gen 3 engine?
For example, a single-bolt cam won’t work on a Gen III engine because the cam sensor trigger wheel is not used on the newer 1-bolt cam gear. You could still do this but would require moving the cam sensor to the front of the engine with LS2 style parts.
What is the Gen 4 ECU?
Part of the Gen IV package included a faster and more powerful ECU that controls a hydraulic servo that advances or retard the cam based on engine speed and load (engines equipped with VVT). The ECU advances the cam at idle and low rpm engine operation to improve low-speed torque and throttle response.
Where is the camshaft located on a Gen 3?
The camshaft is driven by a typical gear and single-row chain arrangement at the front of the engine. The Gen III engines placed the cam sensor at the rear of the camshaft. But with the introduction of the LS2, the cam sensor migrated to the front of the engine on the front cover.
Where is the cam sensor on a Gen IV?
All Gen IV engines move the cam sensor to the front of the engine on the timing cover so these cams do not have a 1x wheel at the back. Starting with the basics, all LS engines use a 55mm core steel camshaft.
