People talk a lot about the Grand National and the GNX, but to many Buick faithful, the 1970 Stage 1 455 is the apex of Buick performance. Buick had its power-crazed engineers working on a successor to the Stage 1. Dubbed the Stage 2, this engine upgrade was meant to be a heavily upgraded 455.
What is the difference between a Buick Stage 1 and 2?
The Stage2 heads intake ports are identical to the Stage1 heads. the Stage 2 uses a different exhaust port and that is where the improvements are.
What is a 1970 Buick GSX worth?
**Figure based on a stock 1970 Buick GSX valued at $71,300 with OH rates with $100/300K liability/UM/UIM limits.
How fast was the 1970 Buick GSX?
Performance
| 0 – 100 kph | 6.0 s |
|---|---|
| 0 – 60 mph | 5.7 s |
| 1/4 mile | 13.4 s @ 105.0 mph |
| Top speed | 242 kph (150 mph) |
What is the difference between a Buick GS and GSX?
The drivetrain in a GS Stage 1 and a GSX Stage 1 were exactly the same. No difference. The unique GSX parts were not factory available in 1970, but begining in 1971 model year, they were (spoilers, hood tach) and could be factory ordered on any GS hardtop .
How do I identify a Buick Stage 1 motor?
Starting in 1972, the Buick changed the VIN coding again to identify the motor option. VIN alone can prove the car came from the factory with the stage1 option. If the 5th digit is a ‘V’, the car is a stage1.
What is the rarest Buick?
The rarest Grand National is the original 1982 model, with only 215 produced. The 1987 GNX was sold with a matching GNX jacket given to original owners, and mint examples of the jacket have sold for $4,000.
What is a Buick GNX?
Short for Grand National Experimental, the GNX was a one-year-only closeout special for the Buick Grand National, developed in partnership with McLaren Performance Technologies/ASC (an American company unrelated to the British automaker and race team).
What does Buick GSX stand for?
GSX. Gran Sport Extra (Buick Skylark)
What was the largest motor offered by Buick in 1970?
Consider this: In the muscle car vernacular, Buick’s 455 stood as the most powerful domestic engine in terms of torque output for the next 22 years, bested only when Dodge introduced the Viper in 1992 (not forgetting Cadillac’s 500-cu.in. V-8 that, in 1970, wrung out 550-lb. ft.
What makes a Buick GS a Stage 1?
The Stage 1 engine option used cylinder heads that, while using raw castings of the same pattern as all of the other Buick 455s sharing the same model year, were machined differently in order to accept larger valves (2.13″ intake and 1.755″ exhaust), and to produce smaller compression chambers for increased static …
Is the 1970 Stage 1 455 the apex of Buick performance?
People talk a lot about the Grand National and the GNX, but to many Buick faithful, the 1970 Stage 1 455 is the apex of Buick performance. That’s where this story of this badass 1970 Buick GS Stage 2 begins.
What is the value of a 1970 Buick GS Stage 2?
Mecum is currently offering the Jones-Benisek 1970 Buick GS Stage 2 at its Las Vegas sale on Friday, November 16. We estimate a sale price of $175K-$200K.
What happened to Buick’s Stage 2 cars?
In 1970, Buick reportedly produced two factory Stage 2 cars along with a number of mule cars running its upgraded high flow heads. The cars’ whereabouts are still unknown.
What is a stage 2 Chevy 455?
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. It is estimated that the Stage 2 package was good for 500+ horsepower.
