Can you DM me please I need to purchase one of your harness please....patrickhodson40@gmail.com.,.,.

 

VQ37VHR or VQ37HR?

One is a stock engine, the other is a hybrid composed of a 3.7 block with HR heads.

At the current moment I do not make plug and play harness for 2008 Gs unless you are planning on full race/drift car.

 

What advantages are there putting the HR heads on a VHR? Older electronics compatibility on a bigger displacement engine?

 

The main drive is that it is much easier to do a swap electronics wise. By ditching the VVEL system you can utilize ANY Standalone ECM to fully control it.

You could get a decent power making 08-09 G35 with this hybrid, It would be easier for V35/Z33 chassis to swap to HR electronics then stroke it and ALL electronics will work.

Only draw back is you will need cams to gain the most, a straight swap will outperform HR numbers but run a bit behind VHR. Cams will fix this issue.

Another con is that the electrical work turns into mechanical work, both swaps are pretty intricate. Only positive the VHR has is that cam upgrades only require 1 cam per bank.

The VVEL is tuned and adjusted.

A positive of the HR hybrid is being able to fully control overlap on the fly with individual cam timing