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CHEVY BBC 572 STAGE 8.0 TURN KEY ENGINE, NEW MERLIN IV BIG M BLOCK, 740 hp For Sale
CHEVY BBC 572 STAGE 8.0 TURN KEY ENGINE, NEW MERLIN IV BIG M BLOCK, 740 hp

CHEVY BBC 572 STAGE 8.0 TURN KEY ENGINE, NEW MERLIN IV BIG M BLOCK, 740 hp :
$8,995

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BBC CHEVY HYDRAULIC ROLLER CAMSTAGE 8.0TURN KEY572 CUBIC INCH ENGINE 740HP @ 5800 RPM.740lb./ft torque @ 4900 rpm.RUNS ON PUMP GAS. WISECOFORGED PISTONS. SCAT 4340 FORGED CRANK AND SCAT H-BEAM RODS, MERLIN IVBLOCK, BRAVO 335cc ALUMINUM HEADS
This engine comes fully dressed out on the front as pictured above (except for the polished intake, available as an upgrade). The carb, distributor, wires and starter arenotincluded with this engine. We have those items available in our other listings.

FULLY ASSEMBLED FROM INTAKE TO OILPAN

Pump gas friendly.

Our 572 Hydraulic Roller cam engine will produce 740 horse power at approx. 5900 rpm. The build sheet is at the lower part of this listing.This engine is an excellent choice for use in classic street rods, sport trucks, 4x4 trucks, and can be used as a daily driver. High mileage use is not a problem with this engine. This is engine may also be set up for use in larger work trucks or motor homes. We can also set any of our engines up for marine use.

This engine will produce more than triple the horse power of the original bbc 396, 427 and 454's and an enormous amount of torque. Pump gas friendly. For those wanting to put this engine in a classic car or sport truck, select cam choice # 1 or # 2 with the single plane intake. This engine will deliver very impressive power in the lower rpm range, and have a very high degree of drivability and long life.

Our machinists/engine builders have many years of experience in building racing engines. This very critical work is done to exacting specs and with great care. Many vendors do not have machinists with the experience or the proper equipment that we are fortunate to have. We have built engines that cost upwards of $50,000. All of our engine builders have been in the engine machining and engine building line of work for their entire working lives. Their ages range from 42 to 68. We have a total of eight machinists/engine builders.

Two year warranty, see details below.

This engine is designed to have a high level of drivability, or street manners. Cams #2 and #3 are our favorites for offering exceptional low end and mid range performance plus max drivability without needing to deepen final gearing or the need for a high stall speed torque converter.

Please read the cam info provided below on the three cam choices before purchasing this engine. It is very important that you choose the correct cam and intake for your vehicle and its intended purpose.

Here are a few good reasons why we think the 572 engine is a better choice than the stock GM bbc engine.

1. The 572 willaccelerate any heavy car much better than any of the smaller cubic inch bbc engines.

2. The exhaust note from this big block engine is much deeper than that of any of the smaller cubic inch bbc engines.

3. Installing thisengine in heavy cars or trucks without killing acceleration, or having todeepen the final gear, and needinga huge stall converter is a real plus.

4. Low maintenance with a high level of drivability.

5.Longevity and reliability.You don't have toturn the engine to a critical rpm range to produce its max hp output. There's nothing unsafeaboutrunningan enginethat's well built like this up to 5900 rpm or less depending on cam choice.The hydraulicroller cam is very reliable and will not require a bronze distributor gear.

6.Should you ever decide to sell your car or truckwith this engine, the resale value would be greatly increased.

We do a full test run on every engine we build on a test mule. When you install the engine, you must verify that the timing is set at the correct value, and the fuel to air ratio must be verified. We also include an engine stand like the one pictured, wheels included, and an engine lift plate.

The build sheet is as follows:


BBC WORLD PRODUCTS MERLIN IV BLOCK BORE9.800"STD DECK HEIGHT

We now use all of the Merlin IV blocks in all of our BBC engine builds as of 7/17/2018. The Merlin block is light years ahead in overall construction as compared to any of the other blocks on the market. The main caps all have ARP hardware. Dimensional specs are spot on, and this has been an issue with other blocks we have used in the past. Many of the top engine builders, ourselves included, have found the new Merlin IV block to be superior to other blocks in numerous ways.

World Products has completely redesigned the famed Merlin Big Block Chevy casting, incorporating numerous improvements and new features to virtually every area of the block.

Designated the Merlin IV, this new block is offered in all popular sizes and deck heights and is sure to be a favorite among racers and professional engine builders.

The block is bored to size with our Centroid touch probe machine. Few machine shops have a machine of this accuracy.

We also deck the blocks to an RA finish of approx. 15 or better. The decking procedure is also done by our Centroid CNC machine.

We often find many brand new blocks to have a sloping deck of up to 4 thous. When we're finished decking the block, it is within approx. .001 accuracy from end to end. Many machine shops fail to catch this as the machinery they use does not allow for such accuracy.

We then plate hone the block with our new Sunnen SV10 diamond hone machine. This is also a very advanced machine that hones the block with afinish unlikeconventional machines.

The final step is to clean the block in our high pressure block washer.

Pictured below is the rotating assembly that comes in this engine.

(File photo, actual parts may vary, see details below)

The photos above and below are file photos. Actual appearance may vary. Thispictureis to give you an idea of parts used in the rotating assembly portion of this engine. All parts are brand new, first line, unblemished,and balanced in house.

READ THIS LISTING COMPLETELY BEFORE YOU BUY ELSEWHERE!

Crankshaft Specs.

  • Crankshaft: Genuine Scat
  • Crankshaft Stroke: 4.375"
  • Crankshaft Material : 4340 Forged.
  • Journal Diameter:STD BBC
  • Rear Main Rod Specs.
    • Rods: Genuine Scat
    • Rod Type: Scat H-Beam
    • Rod Length:6.385
    • Rod Material: Forged 4340 Alloy.
    • Rod Bolt/Cap Screw: ARP 8740 Cap Screws.
    Piston & Ring Specs.
    • Pistons: Wiseco Fully Forged. Fully machined Crown, High Performance for street/strip use.
    • Piston Size:4.560"
    • Dome Volume:Dome Top
    • Compression Height: 1.218
    • Piston Material: Forged 2618 Aircraft Alloy
    • Piston Rings: Mahle High Performance, Moly, Standard Tension.
    • Ring Size and Fit: 1/16 1/16 3/16.
    • Ring Material: Cast/Stainless/Moly
    Bearing, Damper, and Flexplate Specs.
    • Main Bearings: Clevite HP High Performance Series.
    • Rod Bearings: Clevite HP High Performance Series.
    • Balance:In House on CWT balancer.
    • Damper: ATI Super DamperSFIInternally balanced.
    • Flexplate: Heavy DutySFI168 tooth or 153 tooth. Manual Trans. flywheels available. See upgrade and option list below.

    Listed below is a complete breakdown of all the parts that are included in this engine.
    WISECO FULLY FORGED PISTONS, RATED AT 800+ HP. WISECO PISTONS ARE 100% MANUFACTURED IN THE USA. THEY ARE ONEOF THE HIGHEST RATED PISTON BUILDERS IN THE COUNTRY.

    Our Wiseco Forged pistons are custom designed with an increase in compression height. This has many advantages. Here are a few facts about compression height and deck height.

    Our custom made pistons have a compression height that is .010 taller on bbc pistons, and .015 taller on sbc pistons, as compared to most all of the catalog pistons on the market. We find this to be a very valuable feature.

    Since our pistons sit at a taller than normal compression height, we only have to remove approx. .005-.010 off the deck surface of the block. Our goal is set the piston at zero deck (flush with the deck surface). This maintains the deck's thickness, making it much stronger than a block that has been cut down .025. The engine will also run a bit cooler with a thicker deck. It's well known that the deck dissipates much of the built up heat an engine generates. This also allows for future deck re-surfacing without compromising the integrity of the block. On our bbc engines, we actually leave the piston about .003 to .005 in the hole to allow for possible piston rock. Our sbc engines will have the pistons setting right at zero with the deck.


    You may have noticed that our Wiseco custom made forged pistons are referred to as Racing Pistons on the package. This does not mean that the pistons are for racing only. This is a generic term, referring to their ability to be used in high performance applications as well as for street rod use. These pistons are perfectly designed for use on the street, as well as for medium to upper level drag racing.
    We have built approximately 5000 engines using the Wiseco pistons. The engines have been for street rod and strip use. We have seen no problems, nor have there been any complaints. They are an excellent product in every respect.


    These pistons are also suitable for use withnitrous or blower setups.

    The Wiseco forged pistons are rated very high in the street/strip performance industry. Theyare made using the 2618 aircraft alloy and have fully machined crowns. We prefer the 2618 alloy over the lower cost 4032 alloy. This alloy may fragment from the effects of detonation and if this happens, it can be very destructive to the engine.Those types of pistons are fine for stock or mild engine builds, but should never be used in carbureted engines built to high horse power levels.The forged 2618 alloy piston is much more resistant to the effects of detonation and heat.

    The picture below is a file photo of our Wiseco pistons.



    MAHLE HIGH PERFORMANCE MOLY RINGS

    Scat 4340 Forged Crankshaft.

    The picture below is a generic file photo of a Scat crankshaft.

    Some of the benefits of the Scat crankshaft supplied with this assembly:

    The material used in this crankshaft is manufactured from an exclusive Space Age material that was designed for high strength and fatigue resistance. The Scat cranks are the best valueyou will ever find. The Scat crankshafts are the best wayto build a strong bottom end for street rods, dirt and circle track racing, and drag strip racing. This crank is suitable for use up to approx. 800+ hp.

    Crank Polishing.

    Pictured below is our ABS crank polishing machine in action. We polish the crank on every engine we build. This extends bearing life, keeps oil cooler, and with the reduced friction, a slight increase in horsepower is gained. Many machine shops fail to do this. The finish on most cranks are at the bare minimum of acceptance, and we know this can affect bearing life. We have measured the RA finish with our profilometer, and found it to be as high as 25 RA finish on many of the cranks. We bring that number down to below considerably.

    We use genuine Scat rods with genuine ARP 8740 cap screws in all of our engines. Our Scatrods are bronze bushed, and unlike many others, these are fully forged 4340 alloy.

    We have noticed some engine builders using low cost generic rods and crankshafts in their engines. These non-branded, (no-name) products are often poor quality in many ways. You will notice many of the low end engine builders fail to mention the actual brand of the rods or cranks used in their engines. Upon further investigation you will find such parts not to be a branded name product. They may label these parts with a name, but one that is totally unrecognizable in the industry. Our experience in years past with such rods and cranks has been disappointing to say the least. Besides the obvious issues such as incorrect sizing and machining that is difficult to correct, thequestionable alloy these items may be produced from and the potentially incorrect heat treating methods used, could prove to be disastrous. Little can be done to verify this and nothing can be done to correct it.Failures of such critical parts will usually result incatastrophic damage to the engine.As you may have noticed, this is why we specify the brand name and series of every part used in our engines.

    Many of the inferior "no-name" rods on the market will also have "no-name" rod bolts in them. We have seen these bolts before, and they are very low quality. They don't have ARP's rolled thread design, and they don't torque down with the same characteristics as a genuine ARP bolt. It's not just a matter of having a different brand bolt in the rods; these bolts are low quality in many ways. They have been known to fail in engines to a much greater degree than a high quality rod bolt, and this failure usually causes catastrophic damage in the engine. Beware of rods that don't mention the rod bolt brand. As far as we're concerned, ARP bolts are the only brand we would ever use or accept in a set of rods.

    Genuine ARP 8740 cap screws.

    P

    ATI SUPER DAMPER SFI INCLUDED.

    INTERNALLY BALANCED, SFI rated, 7.074" DIAMETER, REDUCED ROTATIONAL MASS, OFFERS EXCELLENT CLEARANCE.


    BILLET ALUMINUM TIMING POINTER. VERY FEW SELLERS FINISH OFF THEIR TURN KEY ENGINES AS WE DO.

    We did not offer this billet timing pointer in the past. However, we noticed that there was a birds-eyeviewof the timing pointer from the driver side of the engine, so we decided to use these on all of our engines.


    HEAVY DUTY SFI RATED FLEXPLATE MADE IN THE USA INCLUDED.

    This SFI flexplate is made in the USA and will resist cracking and warpage to a very high degree. One good telltalein identifying a low quality flexplate is the lack of welding on eachside where the plate mates to the ring gear. They usually have a palegrey color to them, as they are not coated, and will rust quickly.Oursarewelded on both sides, and are much thicker than an OE plate, and are zinc dichromate coated.

    We do offer this engine with a manual flywheel. In most cases we do have both sizes, 153 and 168 tooth, available.

    Our CWT 5500 Balancer.

    We do our own balancing with our new state of the art CWT 5500 Series balancers. The CWT 5500 is the ultimate for precision balancing.We now have three of these in our machine shop.We consider this machine to be highly advanced compared to the Hines balancer we once used.We balance every rotating assembly we sell within 2 grams or less at no extra charge. A balance sheet is included with your assembly.


    Three CWT balance machines under one roof is a rare sight.

    Our crew wrapping up for the day. Pardon the mess.

    Bravo aluminum cylinder heads. 335cc runner size.

    Assembled by us withpremium PBM competition grade valves, Melling springs, Comp retainers, Comp Vitonvalve seals, Comp spring ID locators, Comp 10 degree locks.

    Notice the multi angle valve seat cut. These heads are designed to very high standards.

    Below are the actual flow numbers for the Bravo heads. These numbers are true and accurate. The testing methods we use are considered to be on the conservative side. Some choose to show flow charts for their heads that have been done in a way that shows numbers that are misleading in our opinion. We use the Bravo heads on most all of our bbc engines builds all the way up to the 572 engine. The horse power numbers they produce are exceptional as compared to any of the low to mid range priced heads on the market.

    Intake Flow

    Exhaust Flow

    ARP HEAD BOLTS AND WASHERS AND ROCKER STUDS.

    COMP ULTRA PRO-MAGNUM ROCKERS.


    The new Ultra Pro Magnum™ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums™, but they also take stud mount rocker performance, stability and value to a whole new level. The modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance.
    Important notice.

    If you've read our warning on engine builders using low grade no-name rods and cranks, a similar situation exists in the roller rocker market. We do not use or sell off-shore, (no-name) roller rockers, period. They have proven to be faulty in many ways. The center trunnions are not polished, nor is the center of the roller tip true to size or polished. Metal fragments are often left inside the trunnion housing and will cause destruction of the needle bearings. The aluminum alloys used are never aircraft aluminum alloys as are used in all USA made roller rockers. They often mention the alloy as being 6061, and that is a very soft form of aluminum. The 6061 alloy used on these will assure rocker-flex on any higher than stock spring pressures, and this will affect performance.The pins and keepers that hold the parts together are often of poor quality and improperly installed. The front roller will usually scoot along the valve tip, as it can't roll properly due to rough internal surfaces.

    We have honestly seen valve tips that were scalloped out due to the front roller dragging across them. This will cause the valves to side-load against the valve guides in the heads and surely cause damage to them if run like this for very long.

    We have scrutinized these products in the past and found all of the above problems, and I can tell you there are most likely many more. We would not use them in an engine under any circumstances. You will also see many of these rockers made from stainless on the market. They use a low grade stainless that actually has a near non-existent amount of nickel in them, but that's not the real problem with them, as stainless steel has no advantage over high grade heat treated steel when it comes to a roller rocker. The lack of hardness of the rocker body is the real problem. The problems with these stainless rockers are the same as mentioned above. These are the roller rockers you see on the market for around $119 and up to $169 for the so called stainless ones. They are pure junk, in our honest opinion. They could possibly be used on a budget back yard stock build up that has a very low spring pressure, with a cam that has very low lift, but then you would be better off with the stock stamped rockers on such a build.

    We have heard of many engines using these rockers that came apart and spilled needle bearings into the engine, only to end up in the oil pump. It seems like some engine builders do not care how long the parts in your engine last, or they simply don't know this. I can tell you for sure that using such low grade, "no-name" roller rockers is asking for trouble.

    We use Comp Ultra Pro Magnum rockers in all of our BBC engines. The difference in these compared to the low grade no-name rockers on the market is huge.

    HOWARDS LIFTERS & HOWARDS CHROMOLY PUSHRODS.



    Buy Now

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