The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 91 sbc swap no second port for heater core

**72cs20** · 02-04-2018, 07:13 PM

Is this an TBI engine? If so, look at the passenger side rear of the intake manifold and there should be a water port there for your heater core connection, along with the one on the water pump.

02-04-2018, 07:13 PM	#4
72cs20 Senior Member Join Date: Jul 2014 Location: Los Gatos, Ca. Posts: 407	Re: 91 sbc swap no second port for heater core Is this an TBI engine? If so, look at the passenger side rear of the intake manifold and there should be a water port there for your heater core connection, along with the one on the water pump. __________________ 1966 K20 flatbed build thread - http://www.67-72chevytrucks.com/vboa...d.php?t=768827 62 C20 build thread - http://67-72chevytrucks.com/vboard/s...d.php?t=703583