It 35mm all the way through the runner and then the bowl has been reshaped as well

The valve guide has been tapped back abit to lift the roof off the port and bowl

My head was done by Yatala Head Worx. 5k 30cc head. Intake is port matched and tapered with some bowl and comp chamber work. Exaust port is stock with the exception of bowl and short radius.

Standard valves with Performance dual springs. 85lb seated. CC'd @ 10.6:1. Using 218/227@50 cam.

http://www.rollaclub.com/board/index.php?app=core&module=attach&section=attach&attach_rel_module=msg&attach_id=117111

 

This is the head I plan on using. Wanting to run 11.5:1 comp.

 

Gavin can i ask what carbs you are using and if you have any dyno results?

 

I'm using a 32/36 DGV Weber on an early modified manifold. Never had it dyno'd but it's faster than a Mirage and a twin cam excel. Seat of my pants says its around 80-90hp.

 

Edited July 25, 201610 yr by GJM85

Cool. Nice work on that manifold too

 

Rather ported k series....