This is MAX level full porting and expanding the whole runner tube on a pair of GM TPI runners to 38.5 inner diameter all existing dents will also be removed with this process. This service is unmatched and unavailable elsewhere the expansion process goes beyond the traditional dent removal service and is geared for a more performance oriented service. This is the best and only option if you want to retain the stock look of the original TPI runners while gaining power. This port job will outflow most all aftermarket cast runners as a 38mm diameter bearing passes through each runner with ease, with most aftermarket cast runners the cast isn't consistent throughout they also have large blockages for the mounting bolts cast into them that reduce cross sectional area substantially
Stock TPI individual runner flow 198cfm
Ported Stock runner flow 275+cfm
PRICE FOR FULL RUNNER PORT $380 INCLUDES 80 GRIT FINISH
TURN AROUND TIME 4-5 BUSINESS DAYS
CAN USE OWN RUNNERS IF YOU DONT HAVE OR WANT TO SHIP OUT
CAN REMOVE DENTS FROM AFTERMARKET AS&M RUNNERS AS WELL AS EXPAND THEM EVEN LARGER CALL OR EMAIL FOR MORE INFO