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IRON 1 PIECE REAR GEN V

$3,254.46

SKU: D00Q 31253254

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
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Overview

Cast Iron, 8.1, 10.236 Deck Height, 4.350 Bore. Features standard 9.800" and tall 10.200" deck heights, 4.250" or 4.310" bore sizes. Uses +.300" tall Gen VI style lifters. Scalloped outer water jacket walls improve coolant flow. True priority main oiling lubricates main bearings before lifters. Stepped main oil gallery increases oil flow to crank at high rpm. Front oil crossover eliminates internal oil leaks around distributor shaft. Oil filter pad drilled and tapped for external oil pump. Lifter valley head stud bosses prevent blown head gaskets. Mechanical fuel pump boss, clutch linkage mounts, and side/front motor mounts simplify installation. 4-bolt main bearing caps in ductile iron with splayed outer bolts for extra strength. MRK IV blocks use 2-piece rear seal; Gen V/VI blocks use 1-piece seal and different timing cover pattern. Standard BBC cam and main bore. Coated cam bearings, freeze plugs, and dowel pins included.
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IRON 1 PIECE REAR GEN V

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandDart
Part NumberD00Q 31253254
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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