Jimberg- I did call Edelbrock and they siad that it si not an issue with their heads. There is no drilling required. As far as the car goes. I bought it with no engine, tranny, radiator, hood, etc. The engine I'm running I pulled out of a '69 Cougar. As far as the gaskets are concerned, my engine builder is very reputable and experienced, but you never know. So what do you think will happen if I don't install that plate in the lower manifold?? I DO have that PCV screen and the vac. fitting that plugs into the PCV grommet has two openings on it. I assume I can run the vac. into both. I also called March and they said the pulley set I'm using will decrease water flow and I should get a new crank pulley to speed up the water pump. Makes sense to me. Analyzing the air/fuel ratio is also a great idea. I know the engine is running lean because I haven't put the chip in it and stock comp. runs for 19lb injectors. So what damage can I do by not putting in the plate in the lower manifold?
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