BBC CHEVY 632 DART SHORT BLOCK FLAT TOP PISTONS MANLEY CRANK & RODS FLAT TOP
|Product Type||Shipped Product|
|Number of reviews||0|
BBC CHEVY 632 CUBIC INCH COMPLETE DART SHORT BLOCK KIT. 4.600 bore x 4.750 stroke, 4340 MANLEY PRO-SERIES FORGED CRANK & MANLEY 6.700 H-BEAM RODS. WISECO 2618 AIRCRAFT ALLOY FORGED FLAT TOP PISTONS.
This short block kit is not assembled.
The photo above and below are file photos. Actual appearance may vary. This picture is to give you an idea of what all is included. All parts are brand new, first line, unblemished, and balanced. This short block kit is not assembled. See our other listings for the assembled version of this short block. We will update our pictures soon.
THIS KIT INCLUDES:
A brand new Generation Dart block that has been decked, bored and honed to specs, coated cam bearings, Manley Pro-Series crankshaft and 4340 Manley rods, Wiseco forged pistons, high performance rings, Clevite or King bearings, and a heavy duty 168 or 153 tooth flexplate and a ATI Super damper. The assembly is fully balanced. See details for all the actual specs. In the lower section of this ad is information on the various upgrades we offer in our other listings.
Our short block kits are custom built to your specifications (e.g., piston configurations, compression ratio, and upgrades).
We now use the New Generation Dart blocks in our BBC 572 engine builds. The New Generation Dart block is light years ahead in overall construction as compared to any of the other blocks on the market. 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 Dart block to be superior to the earlier generation Big M series Dart block in many ways.
Dart Machinery has completely redesigned the Big M series Block. They have incorporated numerous improvements and new features to virtually every area of the block.
SBC BBC CHEVY OIL FILTER ADAPTER AND HIGH PERFORMANCE CAM BEARINGS FOR DART SHP BLOCK
The block is bored to size with our new 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 a finish unlike conventional machines.
The final step is to clean the block in our high pressure block washer. You should always re-wash your block before assembly. This is to assure that the block is free of contaminants.
Pictured below is the rotating assembly that comes with the short block kit.
File photo. Pistons will be Flat Top.
READ THIS LISTING COMPLETELY BEFORE YOU BUY ELSEWHERE!
- Crankshaft: Manley Pro-Series
- Crankshaft Stroke: 4.750"
- Crankshaft Material : 4340 Forged.
- Journal Diameter: STD BBC
- Rear Main Seal: 2pc RMS
- Rods: Genuine Manley
- Rod Type: Manley Geniune H-Beam.
- Rod Length: 6.700"
- Rod Material: Forged 4340 Alloy.
- Rod Bolt/Cap Screw: ARP 8740 Cap Screws.
- Pistons: Wiseco Fully Forged. High Performance for street/strip use.
- Piston Size: 4.600"
- Dome Volume: -3CC Flat Top Pistons
- Compression Height: 1.115
- Piston Material: Forged 2618 Aircraft Alloy
- Piston Rings: Mahle High Performance, Moly, Standard Tension.
- Ring Size and Fit: 1/16 1/16 3/16 File Fit.
- Ring Material: Ductile Iron/Cast/Stainless/Moly
- Main Bearings: Clevite or King MB557HP High Performance.
- Rod Bearings: Clevite or King CR807HP High Performance.
- Balance: In House on CWT balancer.
- Damper: ATI brand Super Damper 7.074"
- Flexplate: Heavy Duty 168 tooth or 153 tooth. Manual Trans. flywheels available.
Cylinder Head Volume
Static Compression Ratio
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.
These pistons are also suitable for use with nitrous or blower setups.
The picture below is a file photo of our Wiseco piston.
The New Manely Pro-Series 4340 Forged Crankshaft.
The picture below is a generic file photo
Some of the benefits of the new Manley Pro-Series crankshaft supplied with this engine:
Manley Pro Series crankshafts can make your engine bulletproof. They feature forged 4340 construction and undergo a multi-step heat-treatment process and are then nitrided for added strength. The crankshafts are stress-relieved, shot-peened, and magnafluxed. Manley Pro Series crankshafts have micro-polished large .125 in. radius journals, gun-drilled mains, and lightened rod journals for weight reduction. The counterweights are fully profiled and they are designed for internal balancing. These crankshafts will include a spec. sheet that validates journal sizes and checks for taper on each journal as well as finish quality.
We recommend that you check the thrust clearance on the crank before assembling the engine. This is recommended on any crankshaft, regardless of brand or cost. Also be sure to check your main and rod journal size.
Our choice of rods are the Genuine Manley 6.700 H-beam rods with ARP 2000 cap screws.
The Manley H-beam rods are very high rated in the racing industry. They easily outrank most of the other common brands on the market.
Genuine ARP 2000 cap screws.
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, the questionable 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 in catastrophic 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.
Before the engine is assembled, we strongly suggest checking the rods on a Sunnen machine for sizing on both ends. We recommend this with any rod regardless of cost or brand. It is not uncommon to find some of the rods requiring a slight bump through the hone for perfection in sizing and roundness. We also offer this kit with a proofed set of rods. This is an excellent choice for those wanting to build the engine on their own.
Total Seal High Performance Rings.
KING OR CLEVITE BRAND BEARINGS, DEPENDING ON AVAILABILITY MAIN AND ROD BEARINGS INCLUDED.
MOST OFTEN WE USE THE CLEVITE BEARINGS, BUT DUE TO SHORTAGES WE ARE SOMETIMES FORCED TO USE THE KING HP BEAINGS. THEY ARE BOTH HIGH QUALITY BEARINGS.
The patented ATI Super Damper standard harmonic balancers are designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight.
The inertia weights have six (2-ring design) or eight (3-ring design) computer-machined grooves to retain the proper durometer O-rings (dyno tested for each application). Whether you race or just drive on the street, ATI harmonic balancers are the perfect choice.
- Eliminates torsional crankshaft vibrations
- Exceeds SFI 18.1 specs
- Black zinc chromate finished
- OEM equipment on a variety of crate engines
- Tunable, re-buildable, and extremely efficient at all rpm
- Laser-engraved 360° timing marks
We have noticed others using a low grade knockoff brand damper/balancer, and we have encountered them in the past. They are substandard in appearance, and are often out of spec. The timing marks were also poorly marked on some of the balancers we have come across. You don't want a balancer coming off or one that is improperly weighted. Another problem with low grade dampers is the elastomer bonding can lose its adherence to the inner and outer structure.
HEAVY DUTY FLEXPLATE INCLUDED.
HEAVY DUTY FLEXPLATE. This flexplate will resist cracking. One good telltale in identifying a low quality flexplate is the lack of welding on each side where the plate mates to the ring gear. They usually have a pale grey color to them, as they are not coated, and will rust quickly. Ours are welded on both sides, and are much thicker than an OE plate, and are either zinc dichromate or black powder coated. We would never use the thinner OE style plate on an assembly like this.
We do offer this assembly with a manual flywheel. See our other listings. In most cases we do have both sizes, 153 and 168 tooth, available.
WARNING: the flexplate and crank have a dowel pin hole. You must align the flexplate and crank dowel pin holes, but do not use a dowel pin. The flexplate was aligned to the crank when we balanced the assembly, and must be installed the same way.
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.
Our thoughts on what the competition has to offer.
Rod sizing: Sizing the big end and wrist pin bushing on the Sunnen machine saves a trip to the machine shop. All rods, regardless of brand, should be checked for sizing on a Sunnen machine, and corrected if needed. You will seldom see a complete set of rods that have perfect sizing on both ends right out of the box.
Cost of this rod sizing upgrade is $50.00 We have this upgrade featured in our other listings. You can see this and other upgrade options in our ebay store under the "UPGRADES" category, or simply do a search with the key word, "Upgrade" in the search bar when shopping in our ebay store. Before you finalize your purchase of this kit, you may add any of these upgrades to your shopping cart.
Race balancing: This is for those who want the engine to operate virtually vibration free at high rpm. Extends engine life and frees up a few more horse power. This is a somewhat labor intensive procedure and is not required, but the feel of an absolutely vibration free engine at high rpm is desirable by many. The standard balance job that is included with this assembly at no extra charge is certainly sufficient. With a race balance job, all pistons and rods are match weighed to within 2/10's of a gram or less, and the final balance is brought down to around 1 gram plus or minus. An ultra smooth engine at high rpm has a noticeable feel and sound to it. If you do not opt for this upgrade, the assembly will still be fully balanced. We spend a good hour and a half doing the regular balance work, and it will certainly meet your needs.
Cost of this race balancing upgrade is $125.00 We have this upgrade featured in our other listings. You can see this and other upgrade options in our ebay store under the "UPGRADES" category, or simply do a search with the key word, "Upgrade" in the search bar when shopping in our ebay store. Before you finalize your purchase of this kit, you may add any of these upgrades to your shopping cart.
Block prep package: This upgrade includes notching the block on our Centroid cnc machine to allow additional clearance for the crank if necessary. We also de-burr the block, hone the lifter bores to spec, chamfer the top of the cylinders, and lifter bores, and install the special cam bearings and freeze plugs. The block is then thoroughly cleaned in our block washing machine. We find this upgrade essential for those lacking the proper equipment or knowledge to perform this correctly.
Cost of this block prep package FOR A 632 ONLY is $495.00 We have this upgrade featured in our other listings. You can see this and other upgrade options in our ebay store under the "UPGRADES" category, or simply do a search with the key word, "Upgrade" in the search bar when shopping in our ebay store. Before you finalize your purchase of this short block kit, you may add any of these upgrades to your shopping cart.
BBC Short Block Kit Assembly upgrade: This upgrade includes everything in the Block Prep Package plus assembling the short block kit. If you choose this upgrade, DO NOT also include the block prep package in your cart.
Cost of this BBC Short Block Kit Assembly upgrade is $695.00 This upgrade will include the block prep package. You can see this and other upgrade options in our ebay store under the "UPGRADES" category, or simply do a search with the key word, "Upgrade" in the search bar when shopping in our ebay store. Before you finalize your purchase of this short block kit, you may add any of these upgrades to your shopping cart.
Now you know the real story, and we hope this helps with the confusion.
This product does not have any reviews yet.