Vp Vr Motor Compatability (3.8L)

[Aurc_2]

Gday
A mate of mine needs to know if a Vr Crank,Cam shaft and Balance Shaft
Will Fit a Vp Motor Hes Doing up
Also Weve been informed the Vr Heads will definetly bolt straight on
If this isn't true We would like to hear about it
Aurc_2

 

[The1985divo]

They are practically the same engine cept for little diffrences...the heads will go straight on but dinno bout the other stuff

 

[AirStrike]

Didn't they change the port design in the VR heads? Hmmmmm............

 

[OSL-060]

I think they changed from rectangular ports to a rounder port in the Ecotec Dave, apparently the older rectangular VN-VR Heads allow for better porting which is pretty understandable. Other than valve spring and retainer differences from VN SI I'm pretty sure the VR Heads will bolt up just fine.