Scott Forrester turns his focus to drag racing with his Isuzu turbo four-pot powered Holden Gemini

Holden Gemini turbo

SCOTT Forrester’s crazy turbo Isuzu four-cylinder powered Holden Gemini has undergone something of a transformation since we last saw it at the Street Machine Summernats Horsepower Heroes dyno comp. Scott now wants to drag race the car so the old manual gearbox has been swapped for a more strip-friendly three-speed Trimatic with a 7000rpm converter.

For longevity, the boost has been turned down from a brain-melting 50+lbs to a more sedate 40lbs. “I don’t want to blow up the gearbox before I’ve had a chance to race,” explained Scott. Previously the car has put down a massive 800hp through the rollers, but this year with the new setup 501rwhp was all she wrote.

It still runs a big ‘ol Borg Warner turbo and methanol injection; only from the flywheel back has changed. If it all holds together and runs the times Scott is hoping for, the plan is to have the car ready for the road and have a crack at Street Machine Drag Challenge later this year. 

Scott made his first passes in the Gemini in January 2017 and it went 10.0 @ 141mph on the first pass off the foot brake and then 9.96 @ 144mph turning the tyres through first gear. 

UPDATE: In August 2017, the Gemini ran a 8.66-second pass at 150mph at Sydney Dragway.


How are you finding our new site design? Tell us in the comments below or send us your thoughts at feedback@whichcar.com.au.


Subscribe to Street Machine magazine

Subscribe to Street Machine and save up to 39%
Street Machine is the bible of Aussie modified auto culture, celebrating wild muscle cars, customs and hot rods – and the incredible humans who create them.



Aiden Taylor

We recommend


Real Deal LC Torana

The Rod Shop to put a Ferrari V12 into its ‘Real Deal’ LC Torana

Castlemaine Rod Shop has gone seriously left-field with its latest build, swapping a Ferrari V12 into the ‘Real Deal’ Torana

10 Jun 2021
Kian Heagney
Please enable JavaScript to view the comments powered by Disqus.