anybody know the real static compression on these in a ls/vtec their numbers seem alittle off to me? High 8s in a ls/vtec with a gsr head vs 9.2/4 in a full gsr with less stroke doesn't make sense

 

Looks like he just listed the conpression backwards. I think if you plug all the numbers in a compression calculator they are very close to pr4 pistons. Makes since because they offer type r and pr3 pistons also. I know one guy locally made 400 on e85 with their pr3 pistons in a lsvtec. That put compression around 11.5:1-12:1 i believe.