How much horsepower can you get out of a 4.8 L?
Equipped with the stock heads, cam, and truck intake, the 4.8L produced 336 hp at 5,900 rpm and 347 lb-ft of torque at 4,900 rpm. Torque production exceeded 300 lb-ft from 3,200 rpm (the start of the test) to 5,800 rpm. Owners of the original 283 small-block will envy this type of torque curve.
How much horsepower can a 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.
Is a 4.8 motor a good motor?
4.8 Vortec Reliability – V8 Vortec 4800 With proper maintenance and frequent oil changes, these engines can usually last 250k-300k miles. As I mentioned previously, these engines are practically the same as the 5.3 vortec, which eventually replaced this engine for good in 2013.
How much horsepower does a 4.8 GM engine make?
GM 4.8L Liter V8 Vortec L20 Engine
| Type: | 4.8L Gen IV V8 Small Block |
|---|---|
| Positive crankcase ventilation | |
| Horsepower hp (kw) | |
| Chevrolet Express > 10,000 lbs | 285 hp (213 kW) @ 5400 RPM SAE Certified |
| Chevrolet Express < = 10,000 lbs | 285 hp (213 kW) @ 5400 RPM SAE Certified “GMC Savana > 10 |
Is a 4.8 A LS motor?
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 LR4 was available in GM pickups, vans, and SUVs until 2007….LR4 Performance Specifications.
| LR4 Engine Ratings | |
|---|---|
| Torque Rating | 285-295 ft.-lbs. |
How long does a 4.8 v8 engine last?
With regular oil changes and proper maintenance, these engines can serve you for up to 250,000 to 300,000 miles.
Is a 4.8 an LS engine?
How long does a 4.8 V8 engine last?
How can you tell the difference between a 4.8 and a 5.3 LS?
If you see a flat-top piston, you’ve either got yourself a garden-variety 4.8L or a higher-output, Gen IV 5.3L. Time to check the crank. If you see casting number 12553482, you’ve got a 4.8L. The 5.3L should have the same crank casting number as other 3.62-stroke LS engines—12552216.