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Part number: 31253354
Product Details
Dart 31253354 Iron Eagle Block
Products specifications
Cyl Bore 4.25in
Deck 8.2in
Gen 7 Chevy Big Block

Dart Iron Eagle Sportsman blocks for small block Ford engines are powerful, competition blocks that offer racers the features they need while remaining affordable.

Features:

  • Siamesed cylinders: Standard 4.000 or 4.125 cylinders can be safely bored to 4.165 diameter. Ductile iron sleeves and extra thick walls prevent cracking and produce excellent ring seal.
  • Multiple deck heights allow for increased displacements of up to 468 cubic inches.
  • Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to prevent detonation, extend engine life and produce consistent cylinder temperatures.
  • Ductile iron front and rear 2 bolt main caps with 4 bolt interior main caps. Rear cap uses standard one piece seal.
  • Two main bearing diameters 302 (2.249) or 351C (2.749) allow choice of small or large journal camshaft.
  • Stock components make Dart blocks a direct replacement for most production small blocks. Provisions for stock motor mounts, accessory drives, smog pumps, starter brackets, oil pans and pumps.
  • Upgraded oiling system has a complete stock type system plus a low restriction priority main oiling system with front and rear external oil pump feeds.
  • Dual crossovers allow oil flow to be metered with restrictors for roller lifter cams and/or rocker roller arms to reduce oil flow and windage.
  • Reinforced head bolt bosses are blind tapped to prevent leaks and produce accurate torque readings. Extra thick decks prevent head gasket leaks.
  • Standard camshaft and camshaft drive can be used. Lifter valley has bosses for production hydraulic roller lifters.
Reviews
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1
Cheapest price anywhere, best shipping rate and shipped fast! Bookmarked for all future purchases!
Y
first time ive order from here and my experience was great! shipping was crazy fast. and they had the best price shipped on the 2jz arp head stud set i could find. also how on their site they actually list if they have the part in stock and how many which is very helpful. ive payed for parts to find out the vender didn't even have them available. which lead to more down time. and we all hate down time :)
T
I ordered an Optima battery for my truck after I did a Google search for the battery. Autoplicity was the cheapest on the Web. Even cheaper then eBay. They got me hooked. Thanks Autoplicity
N
Best price on the internet.  A lot cheaper than amazon, so I was pretty surprised.
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