Pwnall Performance Fiesta ST Uprated Engine Block with CSS

Pwnall Performance Fiesta ST Uprated Engine Block with CSS

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Your Price: $1,529.99
Retail Price:$2,199.99
You Save:$670.00(30%)
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Part Number:pwnall-css-fiesta-block

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Core Exchange
Looking for push your Fiesta ST past the 400whp mark? Look no further, the Pwnall Performance Uprated Engine Block is exactly what you need!


Street Cars - Race Cars - Drag Racing - Road Racing

Simply the BEST way to protect your High Horse Power block from cracking!!! The Cylinder Support System is a proven method of strengthening open deck engine blocks while maintaining OEM integrity. It prevents cylinder cracking, walking, and bell mouthing. Unlike traditional aftermarket cast iron sleeves, the support ring is made from aircraft grade 6061-T6 aluminum.

This material will actually pull post combustion heat away from the chamber, decreasing intake charge temps, unlike thick cast iron which tends to heat soak because of poor heat transfer properties.

No Sinking - No Leaking - No Mainline Distortion - No Overheating

The Cylinder Support System process is NOT to be confused with the industry known “blockguard.” Why? Because it does not rely on the loose tolerance and taper(draft angle) of the factory casting. The Cylinder Support System process involves precisely machining the water passage, to accept our precision machined billet 6061 support rings. Our precision fit gives equal support pressure around the cylinders from the top of the support ring to the bottom of the support ring. Even the most finely filed/sanded blockguards cannot compete with the precision of our high quality CNC milling machines.

Strength – Quality - Proven Results – On-time Delivery - Low Cost

What's Included?

  • New 1.6 ecoboost block from ford (If selected)
  • Bore, Hone, Deck, and Jetwash the block
  • Squaring up the block
  • Installation of CSS cylinder reinforcement
The quality of the OEM block new is far from the best and requires extra work to clean it up for perfection.  This is included in the price.  

BARE ENGINE BLOCK ONLY! No rotating internals are included!

This item does not come with a manufacture warranty and is not refundable!

*** This product requires over sized pistons! ***  

The pistons must be 0.25 or greater over stock.  Upon ordering we will ask you to mail your pistons to us to ensure proper piston to wall clearances and have the block machined properly for perfect piston fitment.

OEM block:



Our block:



For shipping quotes to the UK please email [email protected]

*** This product is not legal for sale, or use in the state of California on public roads, or highway and only may be used for dedicated off-road vehicles which may never be used, registered, or licensed for use upon a public road, or highway. Please refer to our C.A.R.B policy here for more information ***

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