View Full Version : Thermostat with or without bypass holes?

John C in PA
08-02-2012, 09:33 AM
Guys, is there any benefit to using a thermostat with the three 3/16" bypass holes in a stock 302 HO motor :confused:?

Thanks, John C

Ed Donnelly
08-02-2012, 12:30 PM
The holes eliminate air pockets and keeps water flowing..Ed

08-02-2012, 01:39 PM
Also makes sure you wont blow out a freeze plug.

08-02-2012, 06:15 PM
i drill mine to 1/4"

John C in PA
08-02-2012, 09:46 PM
Thanks guys!!!! Seems worth it for $2 more than a Sierra t-stat.

John C