The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 71 350 running hot coolant backup up problem

**bautino95** · 01-07-2018, 02:12 PM

Just a few thoughts of some other causes of a hot temp if you sure about the radiator, t-stat, waterpump, ect... Maybe the engine is bored out .060? bad temp sender or gauge? is it an electric sender or mechanical? where is it it installed? You can drill a 1/16 hole in you T-stat. I took it a step farther and drilled two and my 400 never gets above 180* on a hot day.

01-07-2018, 02:12 PM	#13
bautino95 Active Member Join Date: Feb 2016 Location: vallejo, ca Posts: 147	Re: 71 350 running hot coolant backup up problem Just a few thoughts of some other causes of a hot temp if you sure about the radiator, t-stat, waterpump, ect... Maybe the engine is bored out .060? bad temp sender or gauge? is it an electric sender or mechanical? where is it it installed? You can drill a 1/16 hole in you T-stat. I took it a step farther and drilled two and my 400 never gets above 180* on a hot day.