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I was thinking about opening up the intake castings on my 82. Is it worth grinding down the block off plates on the intake manafold, or should I just leave it alone. Just thought it might be a cheep mod. I wouldn't have to buy anything that is. (except for a few gaskets.)
The original casting of the manifold covered half of the intake ports where the manifold meets the head in an effort to reduce performance and increase fuel economy. I haven't seen them myself other than technical article pictures, but if I have them should I grind them out? Maybe they don't exist and I'm a wacko. anybody have any experience wih this?
yes, but it's cast in and there's a dimple in the runner so you can't grind out a whole lot, you can match the first half inch or so but after that you can't, the runner is 3/4th the size of a normal runner over the entire length.
Take a look at the crossfire injection vault website. There are a BUNCH of guys there that do the prot matching. One guy picked up almost a half second in the qauarter mile, and said his car pulls a lot stronger on the high RPM range now.
I definitely think it is worth it.
Some go as far as to grind away the EGR too.
There are some great pictures there.
I don't know if I should be plugging another forum, but I learned alot from there and am glad I found it. CF is my home, though.