I'm in the middle of a split port conversion for my 1995 Ford Thunderbird. I acquired the upper/lower intake manifolds from what was allegedly a 2001 Mustang V6.
When I ordered these gaskets (Felpro Set MS 98011T-2), I'm not 100% sure that I purchased the right gaskets for this manifold/heads.
Q: Can you guys confirm that I have the right gaskets?
Of particular interest are the areas I highlighted in with the question marks.
Technically, all the intake holes line up but there seem to be
a) these blockages for the water passages
b) some mount holes that don't line up with anything
c) some metal cut outs that don't line up with cutouts on the head (see pic 4).
I figure that the block off plates with small pinholes is to limit water flow in/out of the head. My application for this car is a 24 Hours of Lemons endurance racing vehicle. The engine will spend most of its time between 3K-4K RPM for 8 hours at a stretch -- maybe nearly 3 times that if we run a "true 24" race. The engine warms up to 210F and appears to stay there. I don't use this car as a daily driver.
Q: Does it make sense to enlarge these pinholes in the block off plates or will that be detrimental for my application? I know that I don't want to create "cavitation" like what happens when you run w/o a gasket but I'd like some suggestions/advice here.
Thanks in advance for your replies.