Originally Posted by roush611
I am not rebuilding the 88, I am rebuilding the original carb that came on the boat. I ordered Holley part number 703-33 (matches the list number). It is still a good idea to do that one way or the other though right?
Any 4160 prior to 1989 does not have the power valve blowout protection and should have it installed. Flood the carb once and have it pop back through the carb and your day is likely done with a blown power valve. It is very easy to do and the instructions are reasonably well written. You set the depth gauge on the drill (both supplied in the kit) and drill the hole, insert the check ball and install the plug and you are done and protected.