Due to the ongoing (and messy) work in my shop I recently sold my GN to my godson.
Here's Sean at the Buick - Ford Shootout 17 Oct, 2009
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This is what I've done to my car by porting the stock turbo, adding the larger intercooler neck and a few other airflow improving mods. In my opinion, there were a lot of built in restrictions in these cars as they came from the factory and it's been a interesting to me to find these bottlenecks and remove them. Sometimes I would do something that seemed as though it would make a bit of improvement only to find out at the dragstrip that it didn't help at all. After not too many of these disappointments I realized that if something were improved upstream, a corresponding improvement would need to be made downstream on the engine. A friend calls this "Chasing the cork." An added benefit is that the horsepower increase hasn't placed the extra burden on the engine that pumping more air in with a larger turbo would do. In over 200 1/4 mile passes, I have never had a head gasket failure or any kind of motor damage. Reading the list of parts below may be misleading to some extent unless it's kept in mind that some of the parts were installed with future upgrades in mind. They're not all necessary to get a Turbo Buick into the low 12s. If your plans are to improve the performance of a Turbo Regal, I'd like to first congratulate you on your choice of cars and hope that the experience returns as much fun for you as it has for me. Performance Stats; Best 60ft: 1.62 Best 1/8: 7.62 Best 1/8 mph: 90.54 Best 1/4: 11.98 Best 1/4 mph: 113.46 Altitude Corrected 1/4 Mile - 11.80 @ 115. 24 Rear Wheel Horsepower - 430 Flywheel HP - 538 Awards and/or Trophies received 55 Show awards (1 best of show) Performance Modifications Turbo: Ported stock turbo w/Stage 2 inlet bell (compressor ported to match) Injectors: #36lb (Blue Tops) Converter: Transcrafters Orange Stripe ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Chips by Red Armstrong Or Sometimes I made my own using a Pocket Programmer ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Intercooler: Modified Neck Stock Heads: Stock Engine internals: The only modification to the engine was installation of 100# valve springs Gauges: Digital EGT w / hold, GNX dash, Caspers knock detector, Trans Temp gage. Exhaust: Hooker 2.5" Duals Boost control: Adj. Stock Special Notes: Car has all options except digital dash,
rear def. & block heater. Alcohol Injection Postons Ceramic Coated Headers Installed Nov, 99
August 2007 Motor freshened by Tracy Hooper. Upgraded Parts include Edelbrock 204-214 cam, ported heads with O/S Manley SD valves. Miscellaneous under hood parts powder coated or polished.
Nov 2007 16X8 Enkei GNX style rims Goodyear Eagle HR 225-65X16 front & 235-60X16 rear.
Rims polished by www.ohppolishing.com
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Performance Update, 9-8-2008 1st Pass: 11.81 @ 113 - 1.69 60 ft 4th Pass: 11.80 @ 114 - 1.66 60 ft Update 10-17-2009 11.72 @ 115.48 Altitude corrected 11.53 @ 116.91 Stock Turbo - Home ported heads EB 204-214 cam - V4 Intercooler - THDP
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