Complete Blocks and Heads


	Flatirons Tuning Shortblock Build by SCR
	After the Success of our Rotating assembly kits, and the numerous requests for a build short-block, Flatirons Tuning is proud to announce that we have teamed up with the experts at SCR Performance to offer the Flatirons Tuning Short-Block built by SCR. Since we already stock all the parts that most of you are looking for t... (read more...)
	Price: $3,052.03	Quantity:

	STI EJ257 Shortblock
	In Stock and Ready to SHIP! This is still the same brand new Subaru OEM block as before, just at a lower price! (read more...)
	Regular Price: $2,137.14 On Sale For: $1,850.00	Quantity:

	2009+ STI EJ257 Shortblock with Nitride Treated Crankshaft
	In Stock and Ready to SHIP! This is a brand new, completely assembled short-block directly from Subaru. (read more...)
	Regular Price: $2,137.14 On Sale For: $1,850.00	Quantity:

	Subaru EJ257 STI Engine Case Halves (Empty)
	We got enough requests for these that we decided to list them on our site separately from the complete STi short-block. This is a brand new Subaru EJ257 short block case. It does not have a crank, pistons, rods, or bearings, and is just a plain case. If you are going to be building a block with forged pistons, or more, this is a perfect way to start because you can pick all the parts you ... (read more...)
	Regular Price: $1,104.23 On Sale For: $999.99	Quantity:

	Cosworth - Subaru EJ257 High Performance Short Block Assemblies
	For a limited time, we are now offering FREE SHIPPING on Cosworth Engine's! Cosworth EJ25 (STI) short block has gone through countless hours of dyno evaluation to determine the best combination of par... (read more...)
	Regular Price: $5,562.00 On Sale For: $5,391.00	Quantity:

	Crawford High Performance Short Block Assemblies
	Crawford's reputation as an elite Subaru engine builder has continued to grow with the release of several new options from them in long and short block assemblies. These are assembled to Crawford's exacting specifications, and are serialized, so you know and can prove that you have the real deal! There are several variations of these Short Block Assemblies. If you are not sure what you nee... (read more...)
	Price: $3,999.95	Quantity:

	Cosworth High Performance STi EJ257 Long Block Assemblies
	After several years of testing and development, the Cosworth High Performance Subaru EJ25 long block has arrived. The CS600 series is designed for extreme track day use and the demanding performance enthusiast. Each assembly is precision built by one of Cosworth's skilled craftsmen using the finest components from their parts catalog to ensure maximum reliability, power, and performance. St... (read more...)
	Regular Price: $12,607.00 On Sale For: $11,977.00	Quantity:

	Crawford Performance High Performance Long-Block Assemblies
	Crawford's reputation as an elite Subaru engine builder has continued to grow with the release of several new options from them in long and short block assemblies. These are assembled to Crawford's exacting specifications, and are serialized, so you know and can prove that you have the real deal! There are several variations of these Long Block Assemblies. If you are not sure what you need, or if your... (read more...)
	Price: $9,499.95	Quantity:

	Cosworth CNC Ported Big Valve Cylinder Head Assemblies for STi EJ257
	For a limited time, we are offering FREE SHIPPING on Cosworth Big-Bore Cylinder Heads! Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum real world power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger in... (read more...)
	Regular Price: $4,463.00 On Sale For: $4,240.00	Quantity:

	Crawford Performance Race Prepped STi Cylinder Heads
	Crawford's professionally hand ported high power cylinder heads come complete with a performance valve job, valve springs, and titanium retainers. Crawford's heads limit the recommended maximum RPM to 8500, designed for faster spooling characteristics and less frictional loss c... (read more...)
	Price: $6,399.95	Quantity:

	Brand New STi EJ257 Blank Heads and Valve Covers
	These are brand new, blank OEM EJ257 Heads straight from Subaru. Repairing an engine failure? Building an engine from scratch with your own internals and valvetrain? This is a great option for you, since Subaru no longer offers fully assembled heads as a single part number. These do not contain valves, retainers, springs, cams, seals, gaskets, etc. This is just the blank head casings as pictured. We have a... (read more...)
	Regular Price: $1,294.12 On Sale For: $1,132.00	Quantity:

	Cosworth Camshafts for STi EJ257
	We now offer FREE SHIPPING on this item! Cosworth has been engineering camshafts for nearly 50 years. That coupled with years of innovative multi valve cylinder ... (read more...)
	Regular Price: $1,212.00 On Sale For: $1,152.00	Quantity:

	Cosworth High RPM Single Valve Spring Set (x16) for EJ205/EJ257
	We now offer FREE SHIPPING on this item! (read more...)
	Regular Price: $325.00 On Sale For: $309.00	Quantity:

	Cosworth Ultra-High RPM Dual Valve Spring / Titanium Retainer set
	We now offer FREE SHIPPING on this item! Cosworth Ultra Race Valve Spring Kits are engineered for use in situations that require valve control in extreme conditions. (read more...)
	Regular Price: $811.00 On Sale For: $771.00	Quantity:

	Crawford Cam Timing Adjusters
	Do you have a different thickness head gasket than you motor was designed for? Have you decked your block or heads? Do you have phase one heads on a phase two block? Or do you want to adjust your cam timing to move your power band up or down? If you said yes to any or all of the above then Crawford has a cost effective answer ... (read more...)
	Price: $149.90	Quantity:

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