Hi Bruno, The sticker on the head was fitted by the company that machined it for unleaded.
Im using standard B20F compression ratio of 8.7:1. I am going to start with a low boost of about 8 PSI to start with. Depends on detonation. To use full boost i will have to look for forged pistons. Im using the standard injection cam at the moment. Ive been trying to get hold of one of Vintage Performances supercharger profile cams but have had no reply from John Parker.
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