Turbocharging GM's TPI Engines - What you need to know
Explaining the basics of how to turbocharge a tuned port injection engine. It is based on my experiences over the past three years with my turbo Iroc. Hope this helps someone!
1987 Iroc - turbocharged stock tpi 350 acceleration 55 to 90
Small update on the turbo Iroc status. Still running! My truck is broke again (diesel contamination) so I've been driving the Iroc a lot this week and thought I'd make a quick video. Basically just some 12.5 psi pulls from 55 to 80-90 in drive and overdrive. See my other vids for more info on this car. Car has been running fine other than an oil fouled plug on #7 that I had to replace. Getting ready to start collecting parts to do a forged bottom end and probably AFR 195 heads for the top.
Turbo TPI Iroc - Modded ZZ3 350 13 psi - First day at drag strip runs 7.71 at 92.2 mph on radials
Best run of the day and it was on a 1.84 60 foot, so easily could have ran a 7.5x on sticky tires. I was just about the only person on regular radials today. Soon I need to get a bigger turbo and it should open the doors to some low 7's. All in all I'm pretty pleased although I had expected my mph to be closer to 94-95. Engine is a ZZ3 crate motor modded to forged internals. See my other vids for more specs