[DeTomaso] 4V heads valve lift.

[Julian Kift]

My 393C has a solid roller with 0.708" lift, from 1.73 roller ratio on A3 Al heads and CR is 11.5:1 and yes I don't expect it to idle below 1500 rpm.

 

Julian
 
> As an example, some full-race 351-Cs used solid roller cams and related 
> parts to give 0.710" lift at the valve head, using special-everything for drag 
> racing. Sold in a Pantera, the car had scary-fast acceleration but wouldn't 
> idle below 1500, ran only on 108-octane fuel and broke a lot. Recommend not 
> doing this with a stock iron block or iron heads as they are simply too 
> flexible to live very long. This is heavy-duty pro-race stuff. My 2¢- J Deryke
> 

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