72 upgrade

Darter6 said
This is a combo that worked for me. Back in 2000,starting with a 67 Dart, I spent $800 on a Clifford intake,Headers and a Holley 390 along with electronic ignition.The Clifford shorty headers were plumbed into a 2 1/2'' Y pipe and 2 1/2'' single exhaust thru a Flowmaster muffler and completed with a 2 1/2'' tailpipe to the rear bumper.The rear axle was 2.93 ratio.No internal mods were done.In stock form the car ran out of steam at about 90 mph. After the bolt ons the car would top out at 115 mph @ 44-4600 rpm. The stock valve springs were done at that rpm. I then went with 340 valve springs installing them with the head on the block and moved up to a Edelbrock 500 carb.This gave me 52-5500 rpm and would peg the speedo at 120 mph.Fun daily driver.I drove this car on several Hot Rod Power Tours and suprised many when they found out it was a lowly 225 slant six.As stated in the begining this is what worked for me,your results may vary.

There are many different combos, that will work. Personally from reading the original post, he is not looking to spend much money, and he is in a colder climate. With a Clifford manifold you must run headers, so you loose manifold heat, unless using a Clifford water heated manifold. I am not a big fan of headers on the street, on a mild motor, especially where salt is used on the roads. They just do not last that long. Dutra duals or a "homemade" split manifold would be better.

If I were looking improve the slant, and could only do one thing, I would mill the head. Best of all worlds, and no down side. Granted it is more work, but not more money, then "bolt-ons".