Thread: Heat sucks
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Old 02-18-2015, 10:15 AM   #25
Longhorn 70
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Join Date: Dec 2012
Location: Chandler AZ
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Re: Heat sucks

There may be one more thing. Do you have a heater control valve installed? There are 2 different types. One made for our trucks that vacuum closes the valve and the other made for different years and cars where vacuum opens the valve.

If you have a valve that doesn't allow flow through, the hoses will still get hot but the core won't. If you have a valve in place, try bypassing it by placing a short section of pipe in the hose where the valve is.

If you DON'T have a valve, nevermind.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11.
1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar

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