RB26 OR RB30. Need a bit of clarity

[drgtr7]

RB26 OR RB30. Need a bit of clarity

Asking on behalf of a friend who doesn't have Facebook.. He is having trouble on which path to take on his 34 Gtr.. There are two options he is currently tossing up: (both options will be stock blocks with nitto rods and pistons and ported and polished heads with oversized valve spring etc. Cams wil be decided later on). Consider which will work better with the getrag 6speed. 

Built RB26 with a fully built head running a PT6266 .84 rear 

Or 

Built RB30 with a fully built head to suit running a PT6466 .84 rear. 

Aiming for a responsive 500kwish with a reliability. Please consider costs as well as I'd imagine the RB26 route should be cheaper plus engine numbers can remain the same and a bit less fab work.. Etc. TIA! 

[niZmO_Man]

Off topic but this isn't Facebook. You can sign up with an email address.

[GTSBoy]

Responsive 500kw and 2.6 litre mutually incompatible.  Next question.

[Lithium]

26 minutes ago, GTSBoy said:

Responsive 500kw and 2.6 litre mutually incompatible.  Next question.

EFR8374 on a 2.6 with VCam and E85, just under 500kw and epic fun.  Not hugely cheap but definitely responsive, definitely fun.

[Griffin]

I'm looking at vcam with the 9174 on rb26. What do you thinks the gains and cost will be?

E85 already.

Edited June 26, 2017 by Griffin

[burn4005]

Vcam looks to be a good idea on a 2.6 with a 9174 to keep it out of surge. The extra VE at lower rpms will help keep it to the right of the surge line.

Edited June 27, 2017 by burn4005