Dave Immel - YourCarSalesman
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282 E. Wolf Run, Mukwonago WI 53149 262-378-3595

The 1970 Buick GS Stage 2

Posted April 4, 2019 Buick is known for its legendary suspension tuning and ride quality.  It isn’t normally the first car people think of when the conversation turns to American muscle cars. However, Buick has built some of the fastest production cars on the street.  Most recently, the turbo charged Buick Grand National, T-Type and the GNX (Grand National Experiential) from the 1980’s were the latest Buick hotrods to prowl the streets. For those of us old enough to remember the Buick GS, we know that it could smoke the Chevy Chevelle, Pontiac GTO and anything the Blue Oval could put together. Unlike today, there was no engine/driveline sharing among the different General Motors Divisions. So, not only were these Divisions competing against other manufacturers, they were competing against each other. They were often developing vehicles in secret undisclosed locations, away from prying eyes and other GM Divisions. For the January 1970 issue of Motor Trend Magazine, they tested a Buick GS Stage 1. The four-speed car ultimately ran a 13.38-second quarter-mile ET at 105.5 mph. It also managed to lay down a 5.5-second 0–60 while keeping the 510 lb-ft torque in check. Motor Trend dubbed the Stage 1-equipped GS the fastest muscle car it ever tested. And at the time, few cars were capable of beating those numbers. Today you can buy cars off of dealer showroom floors which pale those numbers, but keep in mind that the naturally aspirated V8 in 1970 was much different technology from what is available today. So, what do you do when you’re on top? According to an article written by The Hagerty Blog, you build an even more brutal engine. Buick had its engineers working on a successor to the Stage 1. Dubbed the Stage 2, this engine upgrade was meant to be a heavily upgraded 455. With improvements to 11.0:1 compression, forged TRW pistons, redesigned heads, and a valvetrain capable of 7000 rpm, the ultimate intent was to release the Stage 2 as a Super Stock racing package (not meant for the street). It is estimated that the Stage 2 package was good for 500+ horsepower. Two Stage 2 test vehicles were built, one white car and one red. However, somewhere during the testing process, 1970’s emissions standards came crashing down and Buick was forced to axe the entire factory program. This red car went to the Jones-Benisek racing team for testing and they continued to successfully campaign the car in Super Stock events through the 1970s. Pictured here is the car at Mecum’s November 2018 auction after a frame off restoration.
1970 Buick GS Stage 2 Left Front View 1970 Buick GS Stage 2 Left Side View 1970 Buick GS Stage 2 Right Rear View 1970 Buick GS Stage 2 Engine View 1970 Buick GS Stage 2 Hood View
© Dave Immel
Dave Immel’s website 282 E. Wolf Run, Mukwonago WI 53149 262-378-3595
YourCarSalesman.com

The 1970 Buick GS Stage 2

Posted April 4, 2019 Buick is known for its legendary suspension tuning and ride quality.  It isn’t normally the first car people think of when the conversation turns to American muscle cars. However, Buick has built some of the fastest production cars on the street.  Most recently, the turbo charged Buick Grand National, T-Type and the GNX (Grand National Experiential) from the 1980’s were the latest Buick hotrods to prowl the streets. For those of us old enough to remember the Buick GS, we know that it could smoke the Chevy Chevelle, Pontiac GTO and anything the Blue Oval could put together. Unlike today, there was no engine/driveline sharing among the different General Motors Divisions. So, not only were these Divisions competing against other manufacturers, they were competing against each other. They were often developing vehicles in secret undisclosed locations, away from prying eyes and other GM Divisions. For the January 1970 issue of Motor Trend Magazine, they tested a Buick GS Stage 1. The four-speed car ultimately ran a 13.38- second quarter-mile ET at 105.5 mph. It also managed to lay down a 5.5-second 0–60 while keeping the 510 lb-ft torque in check. Motor Trend dubbed the Stage 1-equipped GS the fastest muscle car it ever tested. And at the time, few cars were capable of beating those numbers. Today you can buy cars off of dealer showroom floors which pale those numbers, but keep in mind that the naturally aspirated V8 in 1970 was much different technology from what is available today. So, what do you do when you’re on top? According to an article written by The Hagerty Blog, you build an even more brutal engine. Buick had its engineers working on a successor to the Stage 1. Dubbed the Stage 2, this engine upgrade was meant to be a heavily upgraded 455. With improvements to 11.0:1 compression, forged TRW pistons, redesigned heads, and a valvetrain capable of 7000 rpm, the ultimate intent was to release the Stage 2 as a Super Stock racing package (not meant for the street). It is estimated that the Stage 2 package was good for 500+ horsepower. Two Stage 2 test vehicles were built, one white car and one red. However, somewhere during the testing process, 1970’s emissions standards came crashing down and Buick was forced to axe the entire factory program. This red car went to the Jones-Benisek racing team for testing and they continued to successfully campaign the car in Super Stock events through the 1970s. Pictured here is the car at Mecum’s November 2018 auction after a frame off restoration.
1970 Buick GS Stage 2 Left Front View 1970 Buick GS Stage 2 Right Rear View 1970 Buick GS Stage 2 Engine View 1970 Buick GS Stage 2 Left Side View 1970 Buick GS Stage 2 Hood View