Measured peak to peak, the Crane cam swap added nearly 50 hp, but the difference was an amazing 80 hp out at 6,500 rpm (remember, the 4.8L loves to rev).
Is the 4.8 a good motor?
For the most part Chevy’s 4.8 Vortec engine was a well-performing Workhorse of an engine. As long as it was properly maintained many drivers were able to keep the engine working well for up to 300,000 miles or more.
How to Make a Chevy Truck Faster
Replace the air intake and cleaner with an open element filter. Use spark plugs with a higher heat value. Replace the ignition coil and spark plug wires with high-performance models. Increase the octane level of the fuel. Replace the engine or transmission.
How can I get more horsepower out of my 4.8 Vortec?
Several things can be done to your 4.8L truck. LT headers, custom tune, shorter gears, higher stalling torque converter. Next would be a Cam or Nitrous. Next would be some kind of boost, Supercharger or Turbo.
The LR4 is a 4.8L iron block truck engine that was introduced in 1999. Along with the LM7 and LQ4, they were the first LS truck engines. The 4.8L engine is also known as the Vortec 4800. The engine specs and information here is for a stock LR4 engine.
How much power can a stock 4.8 make?
Dyno tested, and bone-stock internally, with headers a single-plane intake and 650 cfm carb, the 4.8L LR4 made 333 hp at 5,400 rpm and just over 343 lb-ft of torque at 4,700 rpm. With the truck EFI intake and GM throttle body we typically see just over 350 hp.
What is the difference between a 4.8 L and 5.3 L engine?
It’s difficult to identify the 5.3L and 4.8L because the blocks are the same; the difference is inside. The 4.8L uses an 83mm stroke and the 5.3L’s is 92mm (the same stroke as a 5.7L, 6.0L, and 6.2L).
Crankshaft and connecting-rod casting numbers are the real key to distinguishing between the two. If you have crank casting numbers ending in 216 and rods ending in 143, then you have a 5.3. If, however, your iron-block motor is sporting a 482 crank and 121 rods, then you have a 4.8.
How much HP does a stock 5.3 LS have?
The stock 5.3L is factory rated around 320 hp with 340 lb-ft of torque.
How much oil does a 4.8 Vortec take?
Engine Oil
SAE 5W-30 is preferred. Capacity: 6 quarts.
How reliable is the 4.8 Vortec?
The Vortec 4800 is a complete workhouse and overall a very reliable engine. The problems mentioned above aren’t truly very common and only tend to become common at high mileage, which is expected with any old engine. With proper maintenance and frequent oil changes, these engines can usually last 250k-300k miles.
How To Add Horsepower To 5.3 Silverado
1.1 Upgrade Performance Chips and Tuners.1.2 Upgrade Air Intake Systems.1.3 Upgrades throttle body spacers.1.4 Exhaust system upgrade.1.5 Intercooler Installation.1.6 Throttle Body.1.7 Installation of Superchargers and Turbochargers.
What will make a truck faster?
7 Ways to Boost Horsepower in a Truck
Get a tune-up. Get rid of any extra “gear” you’re hauling around. Install a cold-air intake. Install an aftermarket exhaust system. Invest in an engine tuner. Install an STS turbo kit. Install any number of aftermarket superchargers.
What is the easiest way to increase horsepower?
How You Can Increase Horsepower and Torque?
Clean House to Increase Horsepower. Perform a Tune-Up on the Engine. Install a Turbo Kit or Supercharger. Install a Cold-Air Intake. Install an Aftermarket Exhaust System. Buy an Engine Tuner. Conclusion.
