Well, I pulled the 4.3 out of my truck, and bought a 5.7L Vortec and 4L60E transmission, but I have a slight problem. The engine is out of a 99 Suburban, and the transmission is out of a 97 Yukon (I think). When I went and picked them up, I didn't notice this, but the engine has an extra bolt hole. Hopfully the pics will show up so you can see what I mean. WTF? Did GM add an extra bolt on later model engines? Can I still use this engine tranny combo?
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