InGM pushed the performance bar higher with the introduction of the Chevy V8. Unlike the popular Chevy that was used in a wide variety of automobiles, the was used only in high performance cars like the Chevy Camaro, Corvette and Chevelle.
There were 3 different variations of the that came onto the drawing board at GM during the 70s; the LS5, the LS6, and the LS7 which was designed but not produced for the general public most likely due to the massive smog restrictions that started lurking about in the early 70s. Although the LS7 never made its way into any cars sold to the public, it was sold as a crate engine available through Chevrolet and claimed to produce around horsepower.
The production models of the put out the most horsepower with the LS5 claiming horsepower and the LS6 putting out a mighty horsepower. As with many high performance engines during the muscle car wars, there were lots of rumors flying around in regards to actually how much horsepower the engines put out as opposed to what Chevrolet was reporting.
Some say that both the LS5 and LS6 motors were underrated by about 50 bhp. Of course this has never been officially proven but it could be a good argument for discussion.
Unfortunately the Chevy was the right engine at the wrong time. Uncle Sam started to tighten down on emission controls in which affected a lot of the power of the Another big blow for the was the gas crisis of which pretty much sealed the fate for the motor during this period. The last Chevelles of used the but by this point the engines had been toned down to a measly horsepower.
The Corvette followed suit by the end of and also bid farewell to this once powerful engine. More good news is that today the is one of the favorites among Chevrolet performance enthusiast which means that there is an ample supply of engine parts available for the that really push the horsepower on these engines easily above the bhp mark.
Chevrolet Chevrolet V8 Engine. Share via: 0 More. Categories Chevrolet Chevrolet Chevrolet Chrysler Chrysler Chrysler Dodge Dodge Dodge Ford Ford Ford Plymouth Plymouth Plymouth Pontiac Pontiac Pontiac Uncategorized. Share via. Copy Link. Powered by Social Snap. Copy link. Copy Copied.Skip to main content of over 1, results for " big block".
Filter results by your vehicle:. Enter a new vehicle to add it to Your Garage and filter the results below. Enter a new vehicle. Get it Mon, Apr 20 - Wed, Apr Only 6 left in stock - order soon. FREE Shipping. Get it as soon as Tue, Apr Only 3 left in stock - order soon. Get it as soon as Thu, May 7. Only 14 left in stock - order soon.
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This 7. In the was first introduced for use in the Chevy Corvette, soon after it's use extended to a long list of GM and Chevy applications. Our company has been remanufacturing this engine from its conception and throughout the years we have developed a state of the art process and upgrades that increases the longevity of every long block that we build.
Unlike most rebuilt engines, the parts, testing and build process give our customers an unparalleled confidence in our product. Price of engine will increase once in cart for the following applications.
Every Chevy block must pass our magnaflux inspection designed detect any microscopic flaws or cracking. Blocks are then thermal cleaned followed by steel micro blasting until they achieve a brilliant appearance.
Once a block is fully cleaned, we begin our precision boring and honing process. Using a carbon two-stage power hone we can maximize the sealed area and ensure to precisely meet the recommended RMA readings. Computerized micrometers are used to resize rods with strict accordance to factory recommendations.
Crankshaft's are precision cut and micro polished to achieve a 12 RMA reading or better. We meticulously mill each Cylinder Head until perfect alignment and sealing of the head gasket is achieved. Our Cylinder Heads are assembled using a new valve stem and seals that feature the latest in high temperature technologies increasing heat resistance and longevity.
These polished Cylinder Heads are pressure tested using magnetic detection to eliminate the chance of cracks or flaws unseen by the human eye. Before each head is mated their block using the correct torque valve we vacuum test all seals for proper seating. Triple angled cutters are used to machine the valve seats ensuring proper pressures and flow. All valves, valve springs and valve guides must pass our stringent process of meeting and exceeding OEM specifications.
Heads are aligned for proper bore consistency. Every remanufactured long block has been specifically engineered to help improve the inherent flaws and failure points that can be found in many of today's engines. Truck - 2 Pc. Rear Seal-Lt. Tax excluded Delivery: 1 to 3 weeks. Vehicle Year Vehicle Year. Custom long block assembly We meticulously mill each Cylinder Head until perfect alignment and sealing of the head gasket is achieved.
Product Details. Condition New product.If you coulda done this, like, 15 years ago, you could have cleaned up at the street races sooo big. You read right: cubes in a small-block crate engine, and not an exotic, tall-deck block with a bunch of specialized components, but in a regular ol' Chevy-type package that bolts right into anything that'll swallow a conventional small-block Chevy.
It's the new deal from World Products, the same company that previously introduced the ci smallies see "Little Block, Big Inches," Aug. The is based on the World Products' Motown iron block, and the biggest news about it, beyond the huge displacement alone, is the 4. That's enormous for a small-block; a stock based Chevy block cannot generally be bored beyond 4.
That spec was largely dictated by the gasket bore of the readily available performance head gaskets, but Fel-Pro recently introduced PN gaskets with a 4.
Combined with the 4. What kind of power can you expect? The engine comes in an iron-head version advertised at hp and lb-ft, or an aluminum-head version that makes hp and lb-ft. Every World Products engine we've ever tested has made slightly more than its advertised power.
But 24, miles? Yup--they run on 91 octane and they're designed and built to drive forever. We'll toss it in a car and give you the full performance report a few months down the road. Steve Magnante photographer. Share on Facebook Share on Twitter.Display Options. Already know the part number you need? Click here to enter them directly into your cart. If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly.
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What Makes the 454 7.4L Engine Unique?
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As an Amazon Associate I earn from qualifying purchases. The Chevrolet engine was a part of the 2nd generation of Chevrolet big block engines. The first generation of Chevy big block engines was introduced inwith the 2nd generation being introduced for production vehicles in beginning in The introduction of the engine did not actually begin until This engine is still quite popular for performance enthusiasts, as is indicated by the number of aftermarket parts still available for this engine in some popular aftermarket magazines.
As mentioned, the Chevy first became available as part of the 2nd generation of Chevy big block engines in The engine originally had 3 variants, although only 2 of those were offered in normal production. The LS5 engine remained available in cars untilwhile the LS6 was phased out after only 1 year.
The did last longer in heavy duty truck applications, lasting until the mids. The major reason for the fast phase out of the LS6 was primarily due to bad timing of introducing such a large engine. The engine was introduced just before emission standards were increased, and also very close to the gas crisis in the early s, neither are friendly environments for such a large engine. This engine is now in production only in crate versions, and with quite a few differences compared to the original engine frombut this attests to the popularity of this engine.
This big engine is capable of creating a lot of power and is also quite reliable. The original LS5 engine was introduced with hp and lb-ft of torque, while the LS6 was rated at hp. By the time was reached, change of power calculations along with reduced power for emissions control resulted in a drop to max power rating of horsepower with a peak torque of lb-ft. As you might have guessed, the represents the cubic inch 7. This is accomplished with a bore of 4.
This engine is made using a cast iron block and heads. The pistons used for regular versions of the engine were cast iron, while performance versions were offered in forged steel. Standard push rod overhead valves were used, with 2 valves per cylinder, 1 intake and 1 exhaust, with the camshaft inside the block.
CHEVROLET 7.4L/454 Parts and Accessories
The valves were oriented to open away from the combustion chamber and cylinder walls, greatly increasing the volumetric efficiency of the engine. The Chevy was a very powerful engine and is still popular to this day for performance fans. One major issue that this issue had to face was the fuel crisis in the early s, which is definitely not good for the sale of large engines.
The stricter emissions standards were also not kind to this engine, requiring additional major modifications just after the introduction of this engine.
Nonetheless, this engine was used in other applications for a long time and is still popular to this day for performance fans who have a car large enough to accept one of these big block engines.
Photo via Michael Barera. Chevrolet Engine Specs Article may contain affiliate links.The Chevrolet cubic-inch, or 7. Yet it survived to become a workhorse and father of the 8. Its uniqueness was in its versatility. In its various configurations, it was used for everything from performance cars to trucks, and as a marine and industrial engine.
The survived in production trucks until and then as a replacement engine. The muscle car wars were in full swing when Chevrolet launched the V-8 in There were multiple versions that included the LS7 aftermarket crate engine that wielded horsepower.
The first version, the LS5, featured a four-barrel carburetor and developed horsepower for the Chevelle and horsepower for the Corvette. The had a 4. The was somewhat of an oddity because of Chevy's tendency to underrate the horsepower outputs to fool insurance companies who insisted on high premiums for performance cars. However, tighter government emission standards and safety concerns prompted Chevy to detune the LSwhich was the most commonin to horsepower.
Even by s standards, the was a relic of the past. It was huge and wasteful. The return of the V-6 to General Motors cars in the mids proved that fuel efficiency could be achieved in compact engines.
Fuel efficiency increased and the TBI system remained until It extended the 's life to power buses, watercraft and industrial applications. The emerged in the s carrying the same characteristics of the small-block V-8s. It received a single-piece rear main seal, four-bolt main caps, aluminum valve covers and a non-adjustable valvetrain. Yet it stood apart from other GM small- and big-block V-8s with output ranging from to horsepower. Inits efficiency was further increased with sequential fuel injection.
Chevrolet renamed the engine the Vortec. Perhaps the 's most unique contribution to the legacy of the big-block V-8 was the stroked version of the arriving in Chevrolet increased the displacement to cubic inches or 8.