Ryder361

Hey guys I have a 1995 corvette that I spun a rod bearing on. I found another used lt1, went ahead and put it in my car. Now I went ahead and put a new optispark, coil and plugs. I was trying to start it for the first time but no start. It's has fuel preasure and spark, and if I spray some gas in the throttle body it will actually ignite and back fire. I know FOR A FACT, the valve lash adjustment isn't done properly but my question is will that cause a no start problem? Please and thanks!