David Durell's
1971 Buick GS 455 Stage1
Supercharged!
David's awesome GS is a true street car that he drives to the track over 100 miles on pump gas and easily cruises at highway speed with his Gear Vendors overdrive unit. The suspension is still being refined to grab hold of the track with over 800 lb ft of torque. An easy 130+ MPH street car! I'll let David describe his car in his own words:
Greg,
The car is a 1971 GS 455 with a 9.76 to 1 455 with your Level 4 heads, TA intake, 1.60 TA roller rockers, Hemi Killer cam, TA Headers Jet Hot coated in Sterling, stock TRW forged pistons, stock rods, stock crank, 850 Holley DP, MSD electronics including boost timing master, Turbo 400 Tranny with 10" Art Carr convertor that stalls at 3200 rpm, Gear Vendor's Overdrive, stock 10 bolt rear end with 3.73 gears, tubular lowers, no hop bars, Hal 12 way adjustable shocks, full interior, full weight GS weighing almost 4300 lbs with me in it. The supercharger is Vortech's YS trim supercharger with the carburetor enclosure. It looks like it is injected. The car put down 814 lbs of torque at 2900 at 543 horsepower at 4500 (On the dyno)before the tires started going up in smoke and the car was shut down. The boost peaked at 7.6 lbs. The car is a reliable vehicle that ran problem free for five years before I tore it down for a freshening and some new Gessler Heads. The supercharger is a recent install and very reliable as well. I run it on pump gas until I take to the strip and then I mix in VP. The cylinder heads that you ported were the key to the mint on my combination. In stock appearing form (except for headers) the car ran a best of 12.00. I will send pictures as soon as I can. Again, thank you for your help. Your work on my cylinder heads and your willingness to give me advice made this all possible.
Thank you,
David
David also wrote:
Last time out the car ran 11.21 at 125 mph with a 1.78 60 foot time. This is when the car wasn't tuned. After the initial blower install the car made 771 lbs of torque to rear wheels. After adding ram air and tuning the car made 814 lbs of torque to wheels and horsepower went up by more than 40 hp across the board. I brought the car back to the track after the install and the car picked up 5 mph in the 1/8th, but I kept losing blower belts. I then tore down the engine to freshen. The car was easily a 130 mph car at a peak boost of 7.6 lbs. Traction has been my enemy.
David
David's street car uses:
- GHP Level 4- Competition Stage 1 heads (current combination)
Coming soon.... GHP Custom Ported aluminum TA Performance heads
Vortech supercharger is neatly installed using custom mounting brackets.
Click Here to see a short video of David's car on the dyno. (Please be patient while it loads.) |