Increase bottom end torque by increasing runner length and reduce heat this summer on your Holden V6 with our range of 5MM Gasket Spacers.
 
Comes with optional sealant
 
Please note: Anything bigger than 5MM is going to decrease your TOP end power, whilst not necessarily a bad thing, as you increase RUNNER length you shift the torque curve lower. More torque between idle to 3000RPM but less torque from 4500RPM on wards. You can double stack these if you require more.
 
Anything bigger than a 10MM requires bigger bolts. The biggest we recommend is 12MM. Anything bigger than this requires fine tuning as you have now shifted the runners so much that your fuel trims are going to be out, you will be running rich in low to mid range and lean at top end. Source 15 years of Alloytec tuning.