Stroker Performance Review

B3422w5 said

i could be wrong but i doubt with that Howards solid it would be happy at 6500 like he says it is with a 120 spring

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I shimmed mine to a installed height of 1.80 to get them to 140ish....PRH said they were Pac 1903 springs....same spring i use on the eddy and Sm heads with flat tappet cams.....just wanted to point that out