vintage air and overheating issue (LS engine) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rodstored-72 · 03-30-2024, 08:47 PM

hi, I have '86 C10 swb with '13 5.3 gen iv DOD delete LS factory ecm and wiring harness, I installed a gen iv fact. replacement VA A.C. system. my problem is the engine gets too hot with the HCV closed. talking with V.A. and installed the "sometimes recommended" H-PIPE (recommended on "some LS and coyote engines). I am wondering if anyone else had to install a "H-pipe" to adjust for the HCV when closed?

03-30-2024, 08:47 PM	#1
rodstored-72 chevy truck fan Join Date: Mar 2005 Location: Gilbert, arizona 85298 Posts: 2,003	vintage air and overheating issue (LS engine) hi, I have '86 C10 swb with '13 5.3 gen iv DOD delete LS factory ecm and wiring harness, I installed a gen iv fact. replacement VA A.C. system. my problem is the engine gets too hot with the HCV closed. talking with V.A. and installed the "sometimes recommended" H-PIPE (recommended on "some LS and coyote engines). I am wondering if anyone else had to install a "H-pipe" to adjust for the HCV when closed?



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