4strokeman Posted December 19, 2020 Report Posted December 19, 2020 Looking at working my way into the racing scene, who has the proven highest hp cylinder for a 421 class engine? Been looking at drivelines race port assassin cylinders, but what else is out their that will be competitive in today’s world? Sent from my iPhone using Tapatalk Quote
SKEETER Posted December 19, 2020 Report Posted December 19, 2020 Anything Tyler's builder Cain, does, will be fazt. Quote
JMIndustries Posted December 31, 2020 Report Posted December 31, 2020 On 12/18/2020 at 8:42 PM, SKEETER said: Anything Tyler's builder Cain, does, will be fazt. You mean Cam? Lol Redline Quote
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