Re: help fitting a/market manifold
Yeah, the home made aluminium plate works a treat.
As for the valley oil pan.......some fit them, some don't. I never have, mainly because I've never had one in my motors. As mentioned they keep the hot oil off the bottom of the inlet manifold which keeps it cooler. This allows a cooler, denser charge of air and fuel going into your cylinders....which = more power. That's the principle anyway, as to whether it makes a real performance/economy change, I think you'd be splitting hairs.
If I had to spend $70 on a new one.......I'd be getting cheese burgers instead :hy;
393 Tremec TKO 9"