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Will injected 304 1.65 roller rockers suit a Holden 6?


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#1 Com_VC

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Posted 27 May 2019 - 07:08 PM

Hi,


Was just wondering if there would be any issues using roller rockers to suit a injected 304 on a Holden 6 cyl 12 port head.

 

The roller rockers are Yella Terra's 1.65 ratio designed to suit screw in studs, the head I have here is a blue motor 12 port that has been machined to suit screw in studs.

 

The cam I plan to be running for the time being is designed to suit 1.5 ratio rockers.


Will I have any issues if I go ahead with using the 1.65 ratio rockers?


Thanks



#2 _liam kelly_

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Posted 27 May 2019 - 09:10 PM

Hi Mate,

 

Not too sure hopefully yella terra could help. Would just say to make sure the valve springs can handle that much lift and the extra lift will put more strain on the springs. I have a black 202 im just about to put 1.6 ratio ones one with crow double valve springs that are set up to handle around .600 lift in total.

 

just my small understanding

 

Cheers



#3 Com_VC

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Posted 27 May 2019 - 09:25 PM

Pretty sure this head also has double valve springs.






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