Making a plenum plate
#31
I've bought from this guy, and I've bought from Hughes. The only difference I could see was that Hughes costs more. I used Dorman gasket kits, something Hughes says is a no-no. The gaskets haven't been a problem.
#32
I bought an 1/4" aluminum plate, traced the gasket, trimmed to fit and trimmed the new pan hardware. All less than $60 and some cussing. The peace of mind is worth the headache. Dodge should have made the intake manifold one piece, the idiots. My experience is "new" ain't always better. Good luck, Greg
#33
#34
When I made mine, I found working the aluminum was quite difficult. Which is why I elected to buy one from the guy previously mentioned (for my other engine.) On Ebay. Aluminum has a lower melting point that steel, it gums up saw blades and grinding wheels. As for gaskets, any set will do if you use Permatex copper rtv. Goop the sumbitch in.
#36
local shop cut mine with a plasma torch using my steel one which had blown out the sides between the bolts which mine where short enough just to much expansion differences with the temps running high, climbing up and down the hills they build our roads on out west here, stay in town or flat country you can get away with the steel plate but not if your getting it heated up drive up and down the hills. mine hasn't been on long enough to see if it has solved the problem for me, will know after my trips down south during the winter, from sea level to over 9,000ft can heat your engine up a lot an eye has to be on the temp gauge so it don't get to bad.