Header install 69 Dart
Hedman makes nice shorty block hugger headers. On the LH side you run into having to snake a head pipe around the starter and center link. You will have to make your own headpipes, or have a muffler shop do it. The header dump flanges exit straight down about even with the oil pan mating flange. These will drop in from the top with very little issue.
68-71 340 hi perf exhaust manifolds if you dont want to deal with headers. Problem is these are old, and pricey if you find a set without cracks. Cast iron can be welded, but adds to the cost. There are repops of these that do not have chrysler PN#s or a pentastar cast in, or a heat riser flap. If your not a date code nut this shouldn't matter. They are 2.50" outlet. Will require a special hardware kit to install them. Repops are about $600. hardware kit about $40. Pic of the manifolds shown are a set for my kids car, the repops are unmarked. Last 2 pix are ebay repops with no markings. This should give you an idea what to look for.
TTI makes heavy gage headlines that bolt up to these manifolds.
Again a lot of what you do has to do with the HP of the engine. Stock 68 340s were 380HP from the factory. These manifolds will prob work just fine to 400hp. It's all about whatcha got and whatcha want
Hedman makes nice shorty block hugger headers. On the LH side you run into having to snake a head pipe around the starter and center link. You will have to make your own headpipes, or have a muffler shop do it. The header dump flanges exit straight down about even with the oil pan mating flange. These will drop in from the top with very little issue.
68-71 340 hi perf exhaust manifolds if you dont want to deal with headers. Problem is these are old, and pricey if you find a set without cracks. Cast iron can be welded, but adds to the cost. There are repops of these that do not have chrysler PN#s or a pentastar cast in, or a heat riser flap. If your not a date code nut this shouldn't matter. They are 2.50" outlet. Will require a special hardware kit to install them. Repops are about $600. hardware kit about $40. Pic of the manifolds shown are a set for my kids car, the repops are unmarked. Last 2 pix are ebay repops with no markings. This should give you an idea what to look for.
TTI makes heavy gage headlines that bolt up to these manifolds.
Again a lot of what you do has to do with the HP of the engine. Stock 68 340s were 380HP from the factory. These manifolds will prob work just fine to 400hp. It's all about whatcha got and whatcha want