Ford Performance 427ci Boss Short Block Assembly by Ford Performance

Ford Performance 427ci Boss Short Block Assembly

Details   |  Description
Ford Performance 427ci Boss Short Block Assembly M-6009-427F

Pick up your own 427ci Boss Short Block to have your Mustang roaring like never before! This will set up your Pony for some serious power!

Item #M6009427F
MPN# M-6009-427F

Your Price: $4,899.99

Market Price:$5,449.00
You Save 10.08 % ($549.01)

  Ships from supplier by Tuesday, October 31

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This item ships via UPS Truck Freight shipping!
Orders containing truck freight items incur a one-time $80 shipping fee.


  • Nearly Bullet-proof!
  • Fully forged bottom end
  • Lots of cubes for not a lot of money


  • Boss 351 block
  • Mahle forged pistons
  • SCAT forged h-beam rods
  • SCAT forged crank

What's in the Box

  • (1) FRPP BOSS 427 short block

Made in the USA

Product Description

427ci Boss Short Block Assembly
The Ford Performance (FRPP) M-6009-427F Short Block offers up 427 cubic inches of nearly unbreakable power for your Mustang. It starts off with a 9.5" deck height BOSS 4-bolt main block M-6010-BOSS35195 that is roller cam compatible. Then it's stuffed with all forged goodies like SCAT h-beam rods & 4" stroke crank & 4.125" bore 17cc dished MAHLE pistons.

The rotating assembly is neutral balanced, so a neutral balance harmonic balancer & flywheel or flexplate will be needed.

Designed for M-6049-X306//X307/C3/D3/Z304DA & other high flowing large valve cylinder heads intended for use on a 351W.

Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads.

Short Block is fully assembled. Cylinder heads, cam, timing chain set, oil pan, intake, & other dress & accessories not included.

ARP-1543603 head bolts are required for this block
Requires head gaskets M-6051-R351

We recommend breaking this crate engine in properly. Late Model Restoration will not be held accountable for any damages that may occur due to improper break-in methods. Normal break in conditions consist of 500 miles at normal operating conditions.

Ford Performance Racing Parts - NO WARRANTY - Click Here

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    About This Brand

    Ford Performance
    Ford Performance - Mustang Ford Racing Parts
    Ford Performance Parts is the leader in performance parts and accessories for Mustang and Ford Lightning. is proud to offer Ford Racing Performance Parts for your project. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. Choose from suspension, exhaust, wheels, and other performance parts at If you want the best for your Mustang or SVT Ligtning, look no further than Ford Performance Parts!

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