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A couple years back I started building a 440 to swap into my '72 D200 pickup; at 5000'+ elevation back in Colorado the power from the mostly-stock 360 was a bit lacking. Now since moving to basically sea level I find that the 360 is more than adequate and will likely just swap in an A-518/46RH...

I hope it's not an issue since this isn't about an A-body but this is still the best place by far to ask any Mopar-related tech questions. I have a 1972 D200 pickup with a good-running 360 but after towing my Duster to the track and back 120 miles away up and down the front range of Colorado on...

After taking apart a few big-blocks (383 and now 440) one peculiar thing I've always noticed about these engines is the valve location and angle. Why do they sit towards the outside of the block instead of closer to the center? The factory reliefs in the chambers and some of the block decks to...

My cousin has owned a '72 Polara with a 440 for a few years now and it has been a lot of fun getting it from a barely-running pig back to a proper running state. The car has 46,000 original miles, most of them garage-kept. The engine runs awesome; tons of torque and very smooth. Earlier this...

Just curious, which big blocks came from the factory with the "silent" nylon chain sprockets and which ones came with steel/double roller timing sets? I'm mainly interested in what the regular (non-HP) 440 and 383 4-bbl engines came with.

I know it's not an A-body but my cousin is getting ready for some "first tier" power upgrades for his 440-equipped '72 Dodge Polara (intake, carb, HP exh. manifolds, dual exhaust). He already got a 'new' rebuilt ThermoQuad per my recommendation (help with gas mileage) and needs to swap the...

Some of you may remember the thread I started a while back about the '72 Polara 440/727 for sale in my area. Well I'm about 90% certain my cousin is going to get the car and we're thinking about initial upgrades. The engine is all stock, so what exactly did it come with? Forged crank, or...

My cousin is pretty set on buying a very nice '72 Polara with a 440 in it. The guy selling the car showed us the fender tag and the 'H51' code saying that it meant the engine was an HP 440 c.i. "Police Interceptor" with factory Holley 4-bbl. What exactly did these engines have in them? Since...