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Services2018-11-10T18:07:08-05:00

Henson Racing Engines Services

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Chevy Blocks

Dart blocks for small and big block Chevy engines are designed from the ground up for hard core racing, all the weaknesses of the factory castings have been addressed. Dart blocks are brand-new, fully machined, and virtually ready to assemble with off-the-shelf components. Don’t waste time on a questionable junkyard block or waste money on machining a “semi-finished” factory casting.

Chevy Iron Eagle Small Blocks

The Dart Iron Eagle eliminates the compromises found in production blocks. Iron Eagle small-blocks feature a raised cam location and spread oil pan rails, and are available in standard (9.025”) and tall-deck (9.325″) versions so you can select the crankshaft stroke and connecting rod length that’s right for your combination. The Dart Iron Eagle eliminates the compromises found in production blocks. Iron Eagle small-blocks are available in standard (9.025″) and tall-deck (9.325″) versions so you can select the crankshaft stroke and connecting rod length that’s right for your combination. We also offer a choice of 350 or 400 main bearings to fit factory and aftermarket cranks.  We raised the camshaft and spread the oil pan rails to provide extra clearance for stroker cranks. The versatile Iron Eagle block is the perfect starting point for a big-inch small-block project – you can build a 455ci small-block with Dart! We machine the Iron Eagle block to precise tolerances, eliminating the cost of expensive “blueprinting” a production block. Includes coated cam bearings, freeze plugs and dowels. Turbocharged, supercharged, and nitrous applications! Dart cast iron blocks are available with compacted graphite by special order. Double the strength without the added weight.

Chevy Small Blocks

Dart’s iron and aluminum blocks for small-block Chevy are loaded with features you won’t find in any factory casting. We’ve eliminated the compromises found in production blocks with extra-thick cylinder walls and decks, 4-bolt main bearing caps, and a competition oiling system. Our precision CNC machining and strict quality control measures mean you get optimum out of the box performance without requiring costly machining operations after purchase.

Little M Sportsman Blocks

The Little M Sportsman block is the affordable alternative for sportsman racers and serious street performance. Eliminate the time and expense of ‘blueprinting’ a stock block. The Sportsman is brand-new, fully machined, and virtually ready to assemble with off-the-shelf small-block components. The Little M Sportsman block is the affordable alternative for sportsman racers and serious street performance. Eliminate the time and expense of ‘blueprinting’ a stock block. The Sportsman is brand-new, fully machined, and virtually ready to assemble with off-the-shelf small-block components. With extra-thick cylinder walls, ductile iron main bearing caps (4-bolt on the center three and 2-bolt on the ends), and a competition oiling system, the Little M Sportsman is the perfect starting point for a powerful and reliable engine for the street or the race track. You can select 4.00″ or 4.125″ cylinder bores, and 350 or 400 main bearings. Don’t waste time on a questionable junkyard block or waste money on machining a “semi-finished” factory casting.

Little M Blocks

The Little M is designed from the ground up as a true high performance block which can be used with standard off-the shelf small block components. It is cast from premium high-strength iron and beefed up in all the critical areas. The Little M is designed from the ground up as a true high performance block which can be used with standard off-the shelf small block components. It is cast from premium high-strength iron and beefed up in all the critical areas. With a standard deck height, extra-thick cylinder walls, and a competition oiling system, the Little M is the perfect starting point for a powerful and reliable engine for the street or the race track. You can select 4.00″ or 4.125″ cylinder bores, and 350 or 400 main bearings. Front and rear external oil feed, crossover and restrictor provision. Includes coated cam bearings, freeze plugs and dowels.

Chevy Aluminum Small Blocks

We applied our years of experience in manufacturing aluminum cylinder heads to create the ultimate aluminum small-block. Working with leading engine builders, we incorporated features that make the Dart block the best choice for an all-out competition engine.

Item SBC Aluminum
Material Aluminum
Deck 9.025 9.325 9.500 (4.125 cylinder bore only)
Main Size 350 400
Cam 50mm BBC
Caps Steel
Cylinder Bore 4.000 4.125

We applied our years of experience in manufacturing aluminum cylinder heads to create the ultimate aluminum small-block. Working with leading engine builders, we incorporated features that make the Dart block the best choice for an all-out competition engine. With pressed in dry sleeves, the Dart aluminum small-block is light, strong, and affordable. We raised the camshaft and spread the oil pan rails to provide extra clearance for stroker cranks. With displacements up to 455 cubic inches (4.190” bore x 4.125″ stroke), the Dart aluminum block is ideal for sprint cars, Modified, late-model stock cars, dragsters, and unlimited competition classes. Includes coated cam bearings, freeze plugs and dowels.

Iron Eagle

​Chevy Heads

Dart cylinder heads for small-block and big-block Chevrolet are available in cast iron and aluminum versions ranging from street performance to top level professional racing.Whether you’re looking for a bolt-on upgrade or an exotic spread-port design, look to Dart for the best in performance and quality.

Ford Heads

Budget-priced cast iron, high-value PRO1 aluminum, and PRO1 CNC with fully CNC machined ports and chambers… Dart’s Windsor style heads for small-block Ford engines are available in configurations for street performance or racing applications. Assemblies are available with stainless steel valves and premium components.

Honda Heads

Dart cylinder heads for B-Series Honda are based on brand new OE Honda GSR castings, and feature digital CNC machined ports and combustion chambers.
Available bare or fully assembled with oversized intake valves, Titanium retainers, heavy-duty springs, and custom spring cups.

SBF Iron Eagle Heads

Unbeatable out of the box performance at affordable prices! Iron Eagle heads are designed for 289-351 Windsor and 5.0 liter
Ford applications. The cast-iron SBF head is a bolt-on replacement
for factory castings. Iron Eagles offer maximum throttle response and torque.

SBF Iron Heads

We haven’t forgotten our roots in street performance, and that’s why we’ve introduced an economical new Iron Eagle head for small-block Fords. It’s designed for popular 289-351 Windsor and 5.0-liter Ford applications. The cast-iron SBF head is a bolt-on replacement for factory castings. It features 185cc intake runners, 58cc or 62cc chambers and 1.94”/1.60” or 2.02”/1.60” valves that deliver dramatically improved performance over OEM heads.

SBF Aluminum Heads

Dart’s Ford Pro 1 Cylinder Heads are cast from the same virgin 355-T61 aircraft alloy that is used in Dart Pro-Stock heads. These Windsor style heads are available with CNC machined or as-cast ports. Standard valve angle and spacing is retained for bolt-on compatability. Manganese bronze valve guides are used for long life, and hardened valve seats provide durability with unleaded fuels. Whether you’re building a mild street engine or a big inch fire breather, Dart heads will give you a performance advantage!

Dart CNC-ported aluminum cylinder heads for GM LS-series small-block V8 engines take performance to the next level. Dart’s CNC LS1 head is machined on a dedicated casting with extra-thick sections to maintain the proper wall thickness after porting. Due to the large diameter intake valves, the Dart CNC LS1 head is recommended for use on engines with 4.00-inch and larger cylinder bores. Precise computer controlled CNC machining, multi-angle intake seats, and radiused exhaust seats enhance airflow. Extra material above the ports accommodates valve-train upgrades.

CNC Block Blue Printing
CNC Probing Qualifying and Blue Printing
Deck Squaring
Lifter Bore Correction
Center To Center Boring

Crankshaft Services
Crankshaft Balancing
Magnaflux

Cylinder Head Services
Competition Valve Work
Porting polishing
Bowl contouring
Super Flow Flow testing
Angle Milling
Super Finishing For MLS gasket Surfaces

​Pressure Testing

Cleaning Services
Glass Beading
Spray washing

Dyno Tuning​
Land and Sea Dynomite Dynomometers​
2000hp capable​
​​​​​​​​​13″ toroidal-flow water-brake

V8 valve grind  $200.00
V8 valve grind  $200.00
Pro Sportsman valve grind and blend $350.00
Competition valve grind  $400.00
Back-Cut valves – Set $20.00
Surface heads – up to .020 – Each $40.00
O-Ring heads – .041 wire $160.00
Cut Heads for Loc-Wire $160.00
Cut for Teflon Seals $32.00
Cut for large springs $50.00
Mill and CC heads $120.00
Clean assemble set spring height $80.00
Cut for seats – 1st seat     $30.00
Cut for additional seats – 2-7 (per head)     $20.00
Hone guides – Each     $3.00
Install guides – Each     $7.00
Mill Int. or Ex. side – per surface    $50.00
Angle mill head correct int. and ream head bolt holes     $200.00
Clean heads – Each     $20.00
Custom machine work – Per hour     $80.00
Head repair – Aluminum heads     *Call for quote

Bore V8 Block (up to .060) $150.00
Pro Sportsman Hone (with plate) $250.00
Competition Hone (with plate) $300.00
Finishing of custom unfinished race block *Call for quote
Align bore $450.00
Block true/square deck (up to.020) $150.00
Deck heights over .020 *Call for quote
Install 3 center 4-bolts caps $350.00
Install 5 caps $500.00
Sleeve Cylinder Bores – each $70.00
Install cam bearings $30.00
Big Ford bearings $125.00
Hone small end to float pin – each $5.00
Hone big end to resize – each $6.00
Replace and hone pin bushings – each $10.00
Balancing V-8 assemblies (Heavy metal to balance add’l time and material) $250.00
Balancing flywheel and pressure plate $75.00

Gasket match intake side     $150.00
Gasket match exhaust side     $150.00
Bowl blend     $150.00
Polish chambers     $300.00
Intake match, bowl blend, polish chamber and exhaust port     $650.00
Full competition port and polish   $1100.00
Port welding to reshape – per hour   $80.00
Polish only   $50.00

**PARTS ARE ADDITIONAL**All prices are for labor costs only

Our Trusted Partners

Henson Racing Engines assembles engines utilizing proven parts and superior machine shop capabilities.  This process includes computer simulation programs, CNC machining centers with fixturing designed to utilize Datum’s from the crankshaft and camshaft . OEM manufacturing and after-market suppliers utilize the pan rail, which inherently produces tolerances that can be greatly improved by Henson’s machining process. Even with brand new components such as, engine blocks, cylinder heads and rotating assemblies.

Get A Quote Today

Have questions, need advise, looking for parts or speciality high performance engine components?  We can help you. Send us a email. We’ll be happy to get back in touch with you immediately.

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