circle track (dirt) 4cyl stock car

[defiance]

Helped my dad last month put together his 4cyl dirt track car. efi wasn't permitted, but we used an MS1-extra interfaced with the stock distributor and a 7-pin gm ignition module. Worked brilliantly up to 6500 rpm (redline), and he raced it 3 weeks before slamming it into the wall and ripping the front end up nicely Engine/ECU still works great though! And that's some harsh environment testing too.