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My 1999 Pontiac SevanSeries Trans Am

Page 1

This page was last updated on July 3rd, 2003.

On August 13th, 1999 (yes, that was Friday the 13th), I walked onto the lot of Evans Pontiac in Dallas, TX (635 and Jupiter Road) and drove away with the car pictured below. Here is a list of the options and modifications thus far:


  • 500W Monsoon stereo w/CD
  • T-tops
  • leather interior
  • power everything
Dealer Modifications (Mods)
  • Raptor Ram-Air hood w/airbox
  • K&N filter
  • Window Tint
LG Motorsports Mods
  • G2 World Challenge sway bars
  • G2 LCA brackets
  • Eibach pro springs
  • Borla exhaust (removed 11/27/02)
  • 17" G2 World Challenge wheels with P275/40ZR17 Nitto 555R-II's all around.
  • Complete set of Gorilla locking lug nuts
Road Tech Mods.
  • Custom Sub-Frame Connectors with X-Brace
  • Road Tech Strut Tower Brace
  • Road Tech Adjustable Panhard Rod
  • Road Tech Lower Control Arms
Frank Racing Mods
  • JetHot coated Hooker Longtube headers
  • Velocity Motorsports cam, 228/234 510/510 114lsa
  • 2002 LS6 Clutch and Slave Cylinder
Elite Motorsports Mods
  • Motive 3.73 Gears
  • TA Performance Differential Girdle
MTI, Motorsports Technologies Inc., Mods
  • McLeod adjustable master cylinder - installed 3/4/03
  • Ported and polished throttle body - installed 3/4/03
  • Custom LS1 Edit Tuning - installed 3/4/03
Personal Mods
  • LS6 Intake manifold - installed 5/3/03
  • LS6 valley cover and PCV system - installed 5/3/03
  • 2001 LS6 28.8 lb/hr fuel injectors - installed 5/3/03
  • ASP Underdrive pulley - installed 1/28/03
  • Edelbrock torque arm and urethane bushing - installed 1/9/02
  • Energy suspension transmission mount - installed 1/9/02
  • Custom 3" to 2 1/2" True Dual Exhaust with high-flow catalytic converters - installed 3/4/2003
  • Power Stop cross-drilled front brake rotors
  • Permacool 18" Rail Cooler for Power Steering
  • Hypertech 160 degree T-stat
  • B&M Ripper Shifter
  • MAF Screen Removed
  • Throttle Body Bypass
  • K&N Oil Filter
  • Redline synthetics throughout
  • Zaino Bros. car care products
Planned Mods (in order of priority)
  • SLP 1.85:1 rocker arms (will bump the cam lift to .550)
  • Koni Adjustable or custom valved Bilstein Shocks
  • Moser 12-bolt rear
  • MTI Stage 2 ported and polished cylinder heads
  • Lunati 382 stroker kit
  • Flat low-compression pistons
  • ATI Procharger
  • Custom Paint
  • 381.7 RWHP, 361.5 RWTQ SAE Corrected, 1.02 CF
  • Best ET on street tires: 12.657 @ 111.930 MPH, 2.01 60' (Street tires @ 20PSI, before LS6 Intake and Nitto tires)

Picture Gallery

Her first Zaino Experience

Here she is, parked outside what used to be my favorite hangout, Fry's Electronics in Garland. Fry's is definitely high-tech heaven. Now the Houston location off West road and I-45 substitutes nicely. :-)

What is "SevanSeries"?

The SevanSeries Trans Ams are dealer customs assembled by Evans Pontiac. At their inception, they were stock, fully-loaded Trans Ams customized by LG Motorsports and Evans' own body shop for the hood and badging. Evans stopped using LG Motorsports during the 2000 model year, though. "SevanSeries" is a tribute to "Steve Evans", the owner of Evans Pontiac in Dallas, TX. "S-Evans" is the derivitive of the "Sevans" in the "SevanSeries" name. Other than the Mecham TA, this was, at the time, one of the most powerful Trans Ams available from a dealer lot that wasn't a trade. Sevans cars dyno at approximately 360 Horses at the flywheel, which is 15 more than a stock Corvette C5. The gain in HP and TQ was directly attributed to the Raptor Hoods and the Borla exhaust running wide open.

G2 World Challenge Wheels

These custom wheels were installed by LG Motorsports as part of my Sevans package. They are 17" x 9.5" rims currently with P275/40ZR17 Nitto 555R-II Extreme Radials all around.

Dyno Results

Latest dyno numbers from MTI (Motorsports Technologies Inc.). This chart shows before and after installing the LS6 intake and injectors.

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