Depending on the compression height of you're pistons you might have clearance problems with the 6" rods given the 9.025" deck height. To establish a proper zero deck compression height for you're pistons add half of the stroke and the length of the rod and subtract from 9.025.
Full Answer
What kind of rod is used in a 350 engine?
There is a third small block rod used in the 350 H.O. and ZZ4 engines that is a 5.940-inch powdered metal (PM) rod that is every bit as strong as the original “pink” small block rods. This rod was also used in the baby 265ci LT1-based engines from 1992 to 1994.
What kind of Rod do you use in a stock engine?
STOCK RODS. There is a third small block rod used in the 350 H.O. and ZZ4 engines that is a 5.940-inch powdered metal (PM) rod that is every bit as strong as the original “pink” small block rods. This rod was also used in the baby 265ci LT1-based engines from 1992 to 1994.
What size connecting rod does a Chevy small block have?
When you talk about stock small block Chevy connecting rods, the two most popular overall lengths are 5.7 and 5.565-inches. Go all the way back to the original 265ci mouse motor and you’ll find that Chevy elected to use a 5.7-inch long connecting rod.
How do rod rod length and ratio affect a stroker engine?
Rod length and ratio further affect one of the most important aspects of a stroker engine’s performance — piston speed. It is common to see formulas and calculators that will determine mean piston speed. This is simply the average speed of the piston for the given stroke at a set RPM.
How much horsepower can stock 350 rods handle?
If it was rebuilt correctly, a completely stock bottom end - main bolts, cast crank, stock rods, cast pistons, is good to around 350 HP.
Are 5.3 and 6.0 connecting rods the same?
Well-Known Member. All share the same rod/journal size. You can take a 5.3 bore it to an Stock LS1 bore and use 5.3 rods + Ls1 Pistons and have an Iron Block ls1. 5.3 and 6.0 cranks are interchangeable.
What is the rod length on a 6.0 LS?
6.098-inchesStandard rod length for most LS engines is 6.098-inches.
How does rod length affect piston speed?
While average piston speed is not affected by rod length, there is a difference in piston speed at varying points through the stroke. Shorter rods are faster through mid-stroke and spend less time at top dead center, while longer rods are slower through these areas but spend less time at the bottom of the stroke.
How much HP can stock LS rods handle?
500 hpExcept for the LS7 and LS9, all stock LS motors rolled out of the factory with powdered metal rods. Although they're capable of standing up to 500 hp, the stock rod bolts become marginal at 6,500 rpm.
How long do titanium connecting rods last?
Titanium Connecting Rods The other drawback is that titanium rods do have a fatigue life in race applications and are typically switched out every 40-80 hours.
How much HP does a stock 6.0 LS have?
the stock 6.0L 71cc chambers. Adding the 5.7L heads pushed the compression from 9.5:1 to 9.85:1....Compression Lessons.CylinderChamberCompressionHeadSizeRatio for LQ4LQ4 6.0L71cc9.5:1LS1 5.7L67cc9.8:1LM7 5.3L61cc10.4:11 more row•Nov 27, 2017
Do longer connecting rods make more power?
A longer rod makes more torque with the same piston force, and since it's less angular than a shorter rod, reduces sidewall loading and decreases friction. All of this adds up to more power.
How much HP does a 6.0 Vortec have?
GM 6.0 Liter V8 Vortec L96 EngineType:6.0L Gen IV V8 Small BlockHorsepower hp (kW)Chevrolet Silverado HD < 10,000 lbs:360 hp (268 kW) @ 5400 RPM SAE CertifiedGMC Sierra HD < 10,000 lbs:360 hp (268 kW) @ 5400 RPM SAE CertifiedChevrolet Silverado HD > 10,000 lbs322 hp (240 kW) @ 4400 RPM SAE Certified58 more rows
What is the best rod ratio?
Some engine builders say a “good” rod ratio is anything 1.55 or higher. Production engines may have rod ratios that range from 1.4 to over 2.0, with many falling in the 1.6 to 1.8 range. Four cylinders tend to have lower rod ratios (1.5 to 1.7 range) while many V6s have somewhat higher rod ratios of 1.7 to 1.8.
What is the best bore to stroke ratio?
The bore-stroke ratio is almost 1:1 in Square engine design. For e.g. an engine with a bore diameter of 83mm and stroke-length of 83mm which forms a perfect square. It provides a perfect balance between speed and pulling ability.
How do I choose a connecting rod?
2:216:26How to Choose the Right Connecting Rods - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe lighter weight reduces the overall mass of the reciprocating assembly allowing the engine to revMoreThe lighter weight reduces the overall mass of the reciprocating assembly allowing the engine to rev faster. And higher the downside to aluminum rods is their fatigue life. They can begin to stretch.
What is a 6.0 liter engine?
Chevy’s 6.0- liter V8 engine is found in many GM vehicles and is famous for its perfect blend of power and reliability. The 6.0-liter Chevy V8 engine comes from a family of engines that, over the years, has become one of the most trustworthy V8 engines in recent decades. Words like “bulletproof” and “indestructible” have become synonymous with ...
What is the most powerful 6.0 liter V8?
The most powerful variant of GM’s 6.0-liter V8 family comes in the form of the LS2. Unlike the truck and SUV variants, the LS2 features an aluminum engine block, whereas the others are constructed from cast iron.
How many MPG does a 2009 GMC Sierra 4WD have?
However, according to the EPA ratings for a 6.0-liter V8 equipped 2009 GMC Sierra 4WD, it gets 13 MPG city and 18 MPG highway. Not far off from its gen-three cousin. If fuel economy is the aim, though, a hybrid variant of the 6.0-liter V8 was available in the Silverado, Sierra, Tahoe, and Yukon from 2008 to 2013.
What generation is the Vortec 6000?
Generation Three Small-block 6.0 Variants. The original Vortec 6000 engine is part of the Generation Three family of GM small block engines. It is based on the LS platform, and many of the parts from high-performance LS engines found in Corvette and Camaros are interchangeable. These engines were found in GM vehicles from 1999 to 2007.
What is the best engine for a truck?
Chevrolet also developed an L96 version which was a flex-fuel version of the engine that ran on an ethanol and gasoline mixture. Overall the 6.0L Vortec engine from Chevrolet is known to be a great engine and they are some of the best engines that you can get in a truck. They produce good power and are built to last.
What year did Chevy start using the 4th generation engine?
2005 brought the beginning of Chevy’s shift from the third generation small block engine family to the fourth generation small block engine family. However, most trucks, SUVs, and work vans did not get the fourth-gen engines until the 2007 model year.
What is AFM in GM?
AFM is a system that disables cylinders while extra power is not needed in an effort to increase fuel economy.
What size connecting rod for a Chevy?
When you talk about stock small block Chevy connecting rods, the two most popular overall lengths are 5.7 and 5.565-inches. Go all the way back to the original 265ci mouse motor and you’ll find that Chevy elected to use a 5.7-inch long connecting rod.
Why not use stock rods?
Another reason to not use stock rods is that in the mid 1980s, Chevy went to a thinner I-beam rod. The weights are the same, but the center portion of the rod is roughly 0.070-inch thinner. It’s best to avoid these rods.
What kind of steel is used in Crower connecting rods?
All told, Crower offers 14 different connecting rods for the small block Chevy. All of these rods are built from 4340 steel, but vary dramatically in quality, application, and price. As you can see, there are plenty to choose from. But don’t be misled into thinking that you need the trickest rod.
What are stock rods made of?
Stock Chevy rods are constructed of 1038 mild steel that offers decent strength combined with great ductility. Performance applications apply much more stress to the connecting rod than stock applications, so long ago companies like Carrillo, Oliver, and Crower started building extremely strong 4340 steel rods for racing applications. In the last few years, several new companies have jumped into the high-performance connecting rod market with inexpensive, yet high-quality 4340 and 4130 forged steel rods. For mild street engines, the next step up from stock would be the 4130 steel rods, and then on to the higher-quality 4340 forging.
What is the most stressed fastener in an engine?
The most highly stressed fastener in the entire engine is the connecting-rod bolt. The sidebar on Strength vs. RPM will detail the loads imposed on a connecting rod and its fasteners, but the bottom line is that as the weight of the reciprocating system and RPM both increase, the forces that are trying to stretch the two bolts holding the cap on the connecting rod increase radically. Both weight and RPM are critical to this formula but certainly the most damaging is RPM. For example, a 4.0-inch bore, 3.875-inch stroke engine can impose as much as 12,380 pounds of tensile load on the big end of the connecting rod as the rod accelerates away from TDC at 6,500 rpm. This happens every time the piston comes across TDC on the overlap stroke. When you consider the number of cycles an engine goes through (even though a majority are not at high RPM), this still requires tremendous rod-bolt strength.
What is the tightest clearance between rods and cams?
The tightest clearance between the rods and the cam occur with rods 1,2, 5, and 6; but because of balance considerations, all the rods must be clearanced the same. Pro Form makes a tool to remove the rod cap from a rod, but you can also use a rod vise.
How long should a long rod be for a small block?
Popular longrod lengths for the small block are 5.850, 6.000, and 6.125, but some companies make rods as long as 6.25 inches.
What size cranks are available for a 350?
Unlike cheaper (and usually off-shore produced) brands of forged cranks, Scat’s budget forged cranks, as with its cast cranks, go through the same inspection given to its Winston Cup or Top Fuel cranks. These cranks are available in 3.48- to 4.00-inchstroke lengths with the 2.45 main journal sized for the 350.
What is the cast iron used in Chevy cranks?
The cast-iron alloy used for Chevy cranks produces, in a tensile test, some 3- percent elongation before failure. The Scat material, at 6 percent, doubles the stock Chevy figure and, although not proportional, is a good indication of just how much tougher it is.
What size bearings are used in a 400 block?
To use them in a 400 block, spacer main bearings can be used. Scats standard forged cranks can be had in a variety of stroke lengths from 3.48 to 4.00 inches at a very economical price. Another brand of crank I have successfully used is produced by K1 Technologies.
How much elongation does a 9000 crank have?
After heat treating, Scat’s current 9000 series cranks are in excess of 100,000-psi yield with 6-percent elongation. Although a little more costly to cast, these cranks have a marked advantage in terms of strength and, equally important, are tougher and more ductile than the cast iron used for stock Chevy cranks.
What is the difference between cast and forged pistons?
The basic differences between these two types are related to both function and economies of cost. A forged piston is tougher and often has higher strength at temperature. A cast piston, which usually has a high or very high silicone content, may, depending on the alloy, be as strong but is harder and, as a result, experiences less skirt and ring groove wear. Also a cast piston expands less than a forged one so it can be run at closer clearances for quieter operation. Lastly, in most instances, they are cheaper to make. I intend to walk you through the aftermarket piston maze but before going there it is well worth looking at what your engine may have been equipped with from the factory.
What is ARP on a crank?
What you get here is a cap bolt (ARP) instead of a thru-bolt-style fastener. This means the rod shoulder can be ground the small amount required to clear the cam when a 3.75-stroker crank is used. This rod is also available press-fit or bushed at the pin end and in 5.7- or 6-inch center to center lengths.
How big is a 400 crank?
The 400 crank has a larger main bearing at 2.650 inches diameter than all other small-block Chevys. By grinding this down to the 2.450 diameter of the stock 350 crank, the 400 crank will pop right into a 350 block, adding some 28 cubes in the process.
What is the importance of connecting rod length to stroker engine?
Connecting rod length is one aspect to consider when designing a stroker engine. Rod length changes both the physical and dynamic properties of the engine.
Which side of the piston does a short rod go on?
A short rod will provide more piston speed on the opening side, but lower speeds on the closing side . The exhaust lobe, on the other hand, is opening and closing on the BDC side of rotation where a short rod provides slower piston speeds. Therefore, a long rod will increase piston speed during the exhaust events.
What is a longer connecting rod?
A longer connecting rod will keep the piston further up in the cylinder bore when at BDC for a given stroke. The small end of the rod, which is connected to the piston pin, is further up the cylinder bore with a long rod as compared to a short rod.
How is peak piston speed determined?
The peak piston speed (at a given RPM) is determined by the actual rod length and stroke, while the degree of rotation at which it occurs is determined by the rod ratio.
What are the physical and dynamic properties of rod length?
Factors such as assembly height, engine balance, piston ring location, and cylinder length are physical features that must be considered, while rod angle and piston speed are dynamic characteristics affected by rod length.
What happens when you increase the stroke of a crankshaft?
When you increase the stroke of a crankshaft, each journal will rotate on a larger diameter. Think of crankshaft stroke as a circle. The centers of the crankshaft’s main journals represent the center of the circle. The centers of the connecting rod journals represent the outside of the circle.
How to increase the displacement of an engine?
There are three ways to increase the displacement of an engine: increase the number of cylinders, increase the bore size of the cylinders, or increase the stroke of the crankshaft.
What type of head does a 6.0L truck have?
Most 6.0L truck engines came with cathedral-port heads. The L96 (along with the LC8, L76, and LY6) came with high-flowing LS3-type rectangle port heads. These engines start life in trucks, but today you’re just as likely to spot them under the hood of a turbocharged drag car.
What is a roots supercharger?
A roots-style supercharger is dependable and makes great torque in the low- and mid-rpm range. It’s great for melting tires. A centrifugal-style supercharger is lightweight and makes more power at high rpm. This is partially due to a larger intercooler mounted in front of the radiator.
How much rpm does a L96 crossover have?
If so, go with a tunnel ram. Gains of 35 whp are possible with the crossover point starting at around 5,500 rpm.
How to get more horsepower from a L96?
How to Get More Power From Your L96. For many people, upgrading an L96 starts with adding a cold air intake and aftermarket exhaust. This will definitely free up a few horsepower and the V8 burble will make your ride the center of attention at a stop light. Trucks often come with mechanical fans that sap horsepower.
Can LS6 springs run 550 in?
Heads and intake good for another 50+ hp. Drop-in .500-in. lift cams are popular, but LS6 springs allow you to run .550-in. lift and extend the rpm range. Spring life isn’t a problem because trucks generally don’t spend a lot of time at high rpm.