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    97 Blackbox to 01 Express Van 0411 pin-out

    LexTech, I want to do a black box to 0411 swap on my 97 GMA Sierra truck. Would you help me please? Is there a way to add eclectic engine cooling fans and coil near plugs too? I have a custom built SBC 5.7L. In time swapping 4L60E for a 4L80E. 2x4 [email protected]
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    What to do with cracked Vortec heads?

    I bought new heads from Summit Racing. They are the Promaxx 2151 Vortec - heads have Vortec 8 bolt holes and 12 bolt too. 185 c.c. intake port size, 60 c.c. ehaust ports, 64 c.c. combustion chamber, 2.02/1.60 valves assembled. $764 for the pair. Have not used them yet engine still in Mechine Shop.
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