what head should i use?

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J

je power

New Member
im doin a vitara build. im usin a z6 block and crank with tuner toy rods. i want the highier compression so i was thinking about usin the y8 head because of the smaller chambers. but the z6 head flows better at higher rpm. if someone can help me on choosin a head that would be awesome thanks
 
The z6 head would be best. 1. it's the head that's supposed to be on your block 2. you wont have to worry about timing issues and headaches.
 
im only going for around 350hp. i guess i could just get away with shaving the head for the compression. thanks for the input guys
 
FJT sells the "correct" rods that'll bring the compression back up with Vitara pistons. Milling the head is pretty common for the non-Y8 D-series; some people even milled their Z6 heads until the point it has quench pads too(about 2.5mm off the head IIRC). The milling actually de-shrouds the valves and helps flow a bit more. :)
 
I will measure my rods when I get home tonight. I was only gunna shave the head .005 and the block the same. Im having my head ported and polished so im not to worried about flow.
 
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