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1725 Monrovia Ave. STE D7

Costa Mesa, CA 92627

P: 877-514-9494

Phone Hours:


10am-6pm PST

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Personal checks will all be accepted after a 10 business day hold.


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  • Dec 02 2014

    Bassani 2015 Mustang GT Exhaust Systems

    Just released: 2015 Mustang GT Bassani Exhaust!!! Complete kits with long tube headers and 3" x crossover, or just a 2.5" x-pipe catback upgrade. Plus 2011-2014 also in stock and ready to ship:

  • Nov 06 2013

    New High Performance Fuel Injectors!

    We now have a full line of high performance TREperformance Fuel Injectors. We have skinny style EV1 Bosch fitment 19lb, 24lb, 30lb, 36lb, 42lb, 60lb, and 80lb/hr injectors for many applications, including Camaros, Corvettes, Mustangs, etc. We also have Wide Body Bosch style and Wide Body Denso style from 200cc up to 1600cc for high horsepower race cars also. If you do not see what you are looking for on our website, just shoot us an email and we probably have what you need! Thanks, Nick

  • Nov 06 2013

    TREperformance New Store Location

    TREperformance Inc. has moved to a brand new warehouse down the street from our old location. Come on in and checkout the new shop, and don't mind our dog Sparky, he's a Golden Retriever/Chow mix who is friendly as can be once you meet him! The shop is at the very back when you make the turn into the parking lot. If you are in the Huntington Beach/Costa Mesa/Newport Beach area, stop by our new storefront and warehouse location: 1725 Monrovia Ave. Suite D7 Costa Mesa, CA 92627  

    Ford 306/331/347/363 Race 8 second DART SHP Forged 4340 Short Block SBF 4.125 -

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Ford 306/331/347/363 Race 8 second DART SHP Short Block

Our 306/331/347 Race 8 Second Dart Short Block is designed for 800hp-1000hp vehicles looking for a strong foundation for high horsepower. This short block is balanced to 28oz and ready for your big horsepower street or race car. The extra strength of this setup relies upon a 4340 forged steel crankshaft and set of 4340 forged steel H beam rods along with the Dart SHP 4 bolt main 302 block. This is the premium 4 bolt iron block available for 302 based motors and can handle upwards of 1200hp. For lighter rotating assembly parts we also have high strength 4340 I beam rods, and Ultra light 4340 I beam rods for quick and high revving naturally aspirated engines. Don't hesitate to ask us about custom internal parts for your exact needs, wants, and application!

Long Blocks: There is NO EXTRA CHARGE to assemble anything else you buy from us to your short block. Please ask if you are interested in anything you don't see!
Availability: All Short Blocks are custom built and take 4-6 weeks to build.
Shipping: All Short Block builds are charged the actual cost of shipping which is calculated and charged when you make your order.
Was: $5,299.99
Sale: $3,999.99
Save: 25%
Save: $1,300.00


Block: 4" bore TREperformance race prepped Dart SHP 4 bolt main 302 block

Crank: RPM forged steel 4340 (balanced with the rest of the assembly to 28oz external)

Rods: RPM 4340 Forged H beam

Bearings: Clevite P rod and main

Pistons: Probe SRS 2618-t6 high alloy lightweight forged pistons, Flat top, dome top, or dished top

Rings: Mahle plasma moly file fit rings gapped for your application

306/331/347 Race 8 second Dart Short Block Options:

363 UPGRADE: Upgrade to big bore 4.125" block. $100
RODS: 4340 Forged ultra light weight I beam rods recommended for n/a setups only up to 850hp. $100
CRANK AND RODs: Upgrade to SCAT brand 4340 crankshaft and H beam rods $200
BEARINGS: Clevite H series race rod/main bearings. $150
MAIN STUDS: ARP #154-5612 stud kit replacing ALL main bolts. Includes line hone of the block. $300
ROD BOLTS: ARP 2000 for 800hp+ $150
WRIST PINS: Tool Steel .225 wall thickness for 1000hp+. $200
PISTON RINGS: Total Seal AP series steel top ring for high boost pressure $150
FLEXPLATE: RPM SFI legal Steel Flexplate 157 or 164 tooth. $69
FLYWHEEL: SPEC SFI legal Billet Steel Flywheel. $233
FLYWHEEL: SPEC Lightweight SFI legal Billet Aluminum Flywheel. $332
BALANCER: SFI legal All Steel Harmonic Balancer. $169
BALANCER: Romac SFI high performance steel balancer. $299
BALANCER: Romac SFI lightweight steel/aluminum balancer. $329
REAR MAIN SEAL: Clevite one piece rear main seal installed in block. $25


  • TREShortBlockDART302
  • TREShortBlockDART302
  • TREperformance
  • All Short Blocks are custom built and take 4-6 weeks to build.
  • New


Shipping Information

  • Item Requires Shipping
  • 150.0 lbs.
  • W36.0000” x H15.0000” x L15.0000”
  • This item will require a special quote for shipping charges.
  • All Short Block builds are charged the actual cost of shipping which is calculated and charged when you make your order.