In the realm of high-performance pickup trucks, General Motors hasn’t yet provided an equivalent to the potent offerings from Ford and Ram. However, owners of Chevrolet Silverado 1500 and GMC Sierra 1500 models have an enticing option: the recently unveiled Hennessey Goliath 650.
This significant enhancement from Hennessey Performance, announced this Monday, involves the addition of a supercharger to the optional 6.2-liter V-8 engine in these models. The result is a substantial 55% boost in power output. The modification elevates the engine’s capability to an impressive 650 horsepower, a considerable leap from the original 420 horsepower, as per Hennessey’s claims.
Key components of this upgrade include a 3.0-liter supercharger, augmented intake and exhaust systems, an intercooler, a ventilation system for the crankcase, and a unique engine management calibration by Hennessey. The firm also replaces the standard pushrods in the V-8 with more robust chromoly versions. The power transmission to the wheels is handled by the unchanged 10-speed automatic gearbox, complemented by an option of either part-time or full-time four-wheel drive.
The cost for the power enhancement stands at $27,950. Additionally, Hennessey proposes an off-road package specifically for the GMC Sierra 1500 AT4, priced at $22,950. This package includes a bespoke steel front bumper featuring a “GOLIATH” inscription and extra driving lights, a suspension lift, and custom 20-inch wheels shod with 35-inch off-road tires.
Hennessey’s history with GM trucks includes previous Goliath iterations, such as a 6×6 conversion of the Silverado 1500 and a power lift to 705 horsepower using a supercharger on the 6.2-liter V-8.
The production quantity for the Goliath 650 package remains undisclosed by Hennessey, a Sealy, Texas-based enterprise. Typically, the company limits its production numbers for such specialized upgrades.
Consistent with Hennessey’s standards, the Goliath 650 upgrade comes with a three-year/36,000-mile limited warranty.
Frequently Asked Questions (FAQs) about Hennessey Goliath 650 Upgrade
What is the Hennessey Goliath 650 Upgrade?
The Hennessey Goliath 650 Upgrade is a performance enhancement for the Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. It involves adding a supercharger to the 6.2-liter V-8 engine, increasing the power output by 55% to 650 horsepower.
How does the Goliath 650 upgrade improve the trucks’ performance?
The upgrade includes a 3.0-liter supercharger, high-flow intake and exhaust systems, an intercooler, enhanced crankcase ventilation, and a custom engine management tune. This results in a power boost from 420 hp to 650 hp.
What additional features does the Hennessey off-road package offer for the GMC Sierra 1500 AT4?
The off-road package for the GMC Sierra 1500 AT4, priced at $22,950, adds a custom steel front bumper with a “GOLIATH” script, additional driving lights, a suspension lift, and custom 20-inch wheels with 35-inch off-road tires.
Are there other Hennessey Goliath upgrades available for GM trucks?
Yes, Hennessey has previously offered other Goliath upgrades for GM trucks, including a 6×6 conversion for the Silverado 1500 and a supercharger upgrade that increased power to 705 hp.
How much does the Goliath 650 power upgrade cost?
The Goliath 650 power upgrade costs $27,950.
Is there a warranty included with the Hennessey Goliath 650 Upgrade?
Yes, the Goliath 650 upgrade includes a three-year/36,000-mile limited warranty.
More about Hennessey Goliath 650 Upgrade
- Hennessey Performance Official Website
- Chevrolet Silverado 1500 Details
- GMC Sierra 1500 Specifications
- Guide to Choosing Truck Upgrades
- Understanding Superchargers and Their Benefits
- Off-Road Vehicle Modifications Explained
- High-Performance Pickup Trucks Comparison