How much HP can you get out of 454?
Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big surprise. But like any stock engine, there was tons of power left to be squeezed out.
How much HP does a LS4 engine have?
303 horsepower
The LS4 has an aluminum block and unique, low-profile front-end accessory system, including a “flattened” water pump, to accommodate the transverse mounting position within the Impala and Grand Prix. It is rated at 303 horsepower and 323 lb-ft of torque.
How much HP can a LS4 handle?
about 400 hp
The intake manifold limits the engine’s ability to breathe. The FWD driveline can really only handle about 400 hp. Even upgrading those components to make more power will result in issues with the steering and handling of the car.
What year is the Gen 4 454?
1987
In 1987, a new 454 Mark IV hit the market with EFI, exclusively in trucks.
How can I make my LS4 faster?
How to Get More Power From Your LS4
- A cold air intake kit.
- An aftermarket exhaust.
- A computer programmer.
- Install a 160-degree thermostat before heading to the chassis dyno tuner as it will give them a wider tuning window.
What transmission does a LS4 have?
four-speed automatic transmission
The LS4 came mated exclusively to a four-speed automatic transmission and featured displacement on demand for improved fuel economy.
How much power can a LS4 handle?
What heads came on LS4?
The LS4 had cathedral port cylinder heads and used Active Fuel Management (AFM). The engine was not Flex Fuel (E85) capable and did not use Variable Valve Timing (VVT) technology.
What kind of engine is an LS4 FWD?
Intro to LS4 FWD Engines. The LS4 is unique in the LS engine family because it was a transverse-mounted engine used only in front-wheel drive (FWD) cars from 2005-09, namely the Pontiac Grand Prix GXP, the Chevy Monte Carlo SS and Impala SS, and the Buick LaCrosse Super.
What is the difference between the lsx454 and the 454?
It’s lighter and more compact than an original Big-Block 454. The LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, orange powder-coated valve covers with engraved “LSX454” logos.
What kind of intake manifold does an LS4 have?
The LS4 has a smaller throttle body and intake manifold than other LS engines. The intakes were necked down behind the throttle body to clear the oil pressure sender. As a result, a larger throttle body doesn’t offer big gains. It’s possible to upgrade to an aftermarket intake manifold.
What kind of crankshaft does an LS4 have?
The LS4 featured a cast-iron engine block, which was fitted with a crankshaft of similar composition. This crankshaft was of a two-bolt construction and supported a set of forged steel I-beam connecting rods. Cast aluminum pistons were anchored to the small end of these connecting rods, via chamfered wrist pins.