Category: Mopar 440 headers

See all 6 photos. Ok, we've done header tests in the past, comparing various styles and sizes on moderate to high-powered street-style mills. This size has become the most popular choice in a high-powered street application for one reason-it has been found to work. Moving up the power ladder, say to the level of a well executed "bracket" or sportsman racing engine, or the upper realm of high-performance "street" engines, we had to wonder if there is just a little more power to be had.

Would such an engine benefit by upping the ante on header tube diameter?

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After all, what works best on an engine in the hp range may leave some power on the table when dealing with engines in the hp class. There are theoretical formulas dealing with the subject of pipe diameter as it relates to exhaust port flow. Use the equation square root cfm x. Consider exhaust flow in the area of cfm at 28 inches typical for a well-ported production cylinder head.

While looking at exhaust flow may help to provide a ballpark estimate of required pipe diameter, there are other significant factors that can affect the optimal tube diameter.

Using port flow as the basis for sizing does have its drawbacks. Ultimately, the volume of exhaust flow will not necessarily be determined by the peak flow rate of the port.

Other factors can make a critical difference in the required header tube diameter, most of which are related to the flow and mechanical efficiencies of the engine combination. Other formulas of varying complexity have been worked out to provide a basis for making a calculation of optimal pipe diameter. Even at that, there is a great deal of variability in what works best in a given combination.

While formulas can be useful in making predictions, no formula will take into account the specifics of a header's designed layout. Significant factors here include the layout of the tubes, the radius and number of bends, collector design and size, as well as the departure radius and direction from the port exit. The only way to know for sure which headers will work best, is to try them and see.

We gathered a handful of popular headers aiming to cover the most commonly used pipe diameters on big-block Mopar engines. Since our primary aim was to see how a higher horsepower engine would respond to the larger primary pipe diameter of the bigger headers, we dusted off our "Iron Headed Air Hammer" test engine see Sidebar: the Millan engine capable of well over hp.

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We wanted to look at peak numbers, but were just as interested in how these varied header designs affected the entire curve. To summarize the results, we calculated the average outputs over the rpm range tested, from 3, rpm. While the overall averages give an indication of the area under the entire power curve, we also broke down the results to include average torque production above and below 5, rpm.

Header changes will sometimes take power away at below-peak-torque rpm, but show added power at above-peak-torque rpm. We chose 5, rpm because it was roughly the rpm point at which this engine peaked in torque output.

In a pure race application, output at peak-torque rpm and above is the most relevant range, since this is basically the operating range the engine will see on the track. In a dual-purpose application, torque output lower down becomes much more of a consideration.

Here's what we found. The short-block features a reground stock-stroke forged-crank, swinging Eagle H-beam rods, and With a stock 3. The piston domes were massaged to smooth the sharp edges, and the spark plug reliefs were radiused, which helps flame travel with high-domed pistons and the big wedge's distant plug position. The final compression ratio calculated to The block's oil feed passages to the oil pump were massaged with a carbide bit.

The heads are production castings, selected for their closed quench chamber configuration.Review Your Shopping Cart. In '65 C-Body applications: Headers do not work withor wedge. In some cases, the automatic kick down bellcrank may hit the flange and need to be narrowed. In ' C-Body applications: The may require shims on the passenger side motor mount.

In ' Magnum and Cordoba B-body with column shift: The shift linkage may be low enough to interfere with the header. TTI's offset shaft can solve this problem. Dread the thought of struggling to shoe-horn one-size-fits-all racing headers into your high-performance street car, only to lose your power steering?

Our new under-chassis, Tri-Y header system gives you high-flow header performance and a custom fit that means you don't have to sacrifice your power steering. Retain exhaust studs in the heads — no more breaking into a water jacket! Plus, unlike most headers, it doesn't capture the starter, and, because it's designed specifically for your application, it installs quickly and painlessly — even with the engine in place.

Designed for street use and light competition - retains all your low-end torque. This is the starter we recommend for use with all of our big block and small block header applications. It's not the only starter that will work, but it's the starter we use to test fit all of our headers. See additional information and installation photos here. Designed to weld to existing exhaust systems. You can also create your own exhaust system using these flange pipes.

Includes bolts, nuts, lock clips. Click here for more information and pictures. Accurate Ltd has a complete bolt-on exhaust system that is compatible with our headers.

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Includes gaskets and hardware. Contains all grade 8 hardware with grade 9 washers. Install as per factory manual. Small position adjustments for header clearance are easy with this kit designed for all biscuit mounting systems. Available for purchase separately. Contains 8 header gaskets, graphite with metal tang inside.When you call, just tell us about your car and how fast you want it to go. Of course the more you know about your car, the better we can help.

We built them for us. We won.

mopar 440 headers

Have us build one for you. Watch what happens. Simple as that. Talk to us about buying a ready-to-race car, or consult with us about having one made new.

HEADERS BIG BLOCK

Breathe new life into an old Have us build you a new 6. Talk to us about ready-to-install rear axles and all the parts that go inside. Your source for MoPar yoke kits, u-joints, ring and pinion sets, aluminum carriers, clutch kits, bearings, and crush sleeves. Put power to the ground with suspension parts and advice from Bob Mazzolini Racing.

mopar 440 headers

We can equip you with mechanical and vacuum advance distributors, advance weight springs, timing curve adjustment kits, caps, rotors, wires, and more. High Performance MoPar Parts. Bob Mazzolini Racing has everything you need! You've come to the right place for race cars, rear axles, suspension, ignition, and High Performance MoPar Parts.

View Our Racecars. View Posts Ask Question. After all, building an engine, or a whole car for that matter, is not something to be taken lightly. Let us know things like how much your car weighs and what wheelbase you run. Then we can get into specifics. Maybe you want to use Caltracs in the rear. Maybe you need to stay with stock leaf springs.

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How much preload on the Caltracs? Do I need a pinion snubber? Does it make sense to grind my pyramids in front? What about 6 cylinder torsion bars? And how should they be adjusted?

Do I sit in the car during alignment? Shop Products You've come to the right place for race cars, racing engines, performance transmissions, rear axles, suspension, ignition, and High Performance MoPar Parts.Built with Volusion. Stainless Headers Mfg. This turbo header build kit has everything you need to bring those o ld-school Mopar big block custom header together.

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Found in a wide assortment of Chrysler, Dodge, and Plymouth vehicles, our header kit is designed to fit your big block Mopar B-block and RB-block for a variety of racing applications. See why Stainless Headers Mfg. We offer 3 stages of kit combination options:. Stage 3: Includes everything in stage 1 and 2, plus:. Just like our stainless bends, we start off with an American made stainless and fabricate the industries finest collectors.

Used as a weld in block off between the 4 tubes before welding the collector on, there are precision laser cut for a perfect fit between your specific primary tubes. Each kit includes 4 primary caps and one collector cap. Precision machined in the U.

We are the first in the industry to offer a header how to video as part of our header build kits. There is a wealth of knowledge included on our instructional thumb drive. Quite a few tips and tricks that are not featured on our YouTube channel. This is the perfect companion to complete your header build kit.

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SSX Series Turbo:. S Series Turbo:. We also supply 4 shorter staggered leg degree bends used for those minimum length applications. What makes our stainless mandrel bends truly a unique product?

We start off with an American made stainless raw material, that is then bent in the U. Our material forms better, welds better and last because it is a genuine stainless.

Related Items. Chrysler 4. Mopar 6.Due to shipper and supplier delays, your order may take longer to arrive. Display Options. Already know the part number you need? Click here to enter them directly into your cart. If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly.

If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. What is this? Estimated International Date Tubes, 3. Collector, Dodge, Plymouth, Pair. Primary, 3. Low Price Guarantee. We're so confident in our low prices, we offer a Beat-a-Price Guarantee: We'll beat our competitors' advertised prices on any identical, in-stock product proof of advertised price required! DODGE 7.

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mopar 440 headers

Recent Vehicles. Refine results by: Current Vehicle Recent Vehicles. Recently Searched. Show Recent Vehicles. X Welcome International Customers! Results 1 - 25 of View By Product Groups. Hedman Hedders - Hedman Street Headers. Doug's Headers D - Doug's Headers. This Substitute Part is similar to the item you requested.

View Compare 25 Records per page 50 Records per page Records per page. Sorry, you can only filter 10 selections at a time. View Details.Click Here. Few engines can match the Mopar Big Block when it comes to making simple, reliable, cost effective and class leading horsepower and here at PIE, we offer Mopar Big Block Crate engines to prove it. Today, we can help you make even those fearsome power plants look tame by building you the Big Mopar Wedge of your dreams: you want a ?

But how about stroked a to inches instead? If you want it, we have it. Now imagine it with a supercharger We can build that too. This is the Beautiful Beast That went into this Beautiful Beast!

Did we mention it makes more than bhp? This is Bryan Lynch's gorgeous '68 Roadrunner. The beauty of this engine package is that it makes these numbers below rpm.

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That's big, streetable horsepower. The kind that makes driving fun and effortless. Bryan upgraded to a new style 5 speed manual trans and front disk brakes so he can control and enjoy all that power even more. Want a Big Wedge of your own? Get in touch with us here. Cick here to Check out our " Stroker.

The Blow Job. Part 1. New Dakota Coming? Dodge Releasing Wide Body Charger. Too Much Horsepower? Bigger Is Better. Project SST. Follow along as we take a well used Dodge Ram SST and turn it into the tire fryer it was meant to be.

DODGE 7.2L/440 Headers

On a budget no less!Due to shipper and supplier delays, your order may take longer to arrive. Display Options. Already know the part number you need? Click here to enter them directly into your cart. If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly. If you are an international customer and would like to change the currency that prices are displayed in, you can do so here.

We ship in-stock parts via ground shipping the same day if ordered by pm EST. Monday through Friday. Learn More. Best Tech Advice and Customer Support, before and after your purchase!

You can return any new or unused item within 90 days of the date your item was shipped and we will refund the full purchase price.

mopar 440 headers

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PLYMOUTH 7.2L/440 Mopar big block RB Hooker Headers Headers

Estimated International Date Primary, 3. Low Price Guarantee. We're so confident in our low prices, we offer a Beat-a-Price Guarantee: We'll beat our competitors' advertised prices on any identical, in-stock product proof of advertised price required! Vertical Navigation Horizontal Navigation. Mopar big block RB. Remove All Selections. Search Within Results.

Narrow Your Results. Stock Engine Engine Swap. Loading Recent Vehicles. I am in the United States. International Customer Options. Delivery Options If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly.