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[VR-VS] How to fit Clarko's 20% underdriven pulleys onto a ecotec engine
- Thread starter Immortality
- Start date
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- Apr 15, 2006
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- Sth Auck, NZ
- Members Ride
- HSV VS Senator, VX Calais II L67
Well i'm happy with em. I've got them on my VN with T5 and it's definitely noticeable, it revs out quicker. I have 3.45 diff gears fitted. I can cruise along at 55km/h in 5th, give it some gas and it will accelerate happily.
These pulleys were designed originally for motor sport use (speedway, burnout comps etc), tried and tested on V6 engines. Unfortunately no one's really tried them on the L67 engines before and obviously with the extra pulleys for the m90 blower some slight adjustments need to be made, no big deal as that is a part and parcel of car modification scene
