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DART Big M Billet Cap Block 10.2" Deck

Starting at: $2,741.00

DART Big M Billet Cap Race Block!

10.20 Deck, 4.250, 4.500 or 4.600 Bore

The finest Iron Block on the market! These blocks will support 3000hp!

We offer a FULL Line of DART Products and customized combo's (.903 lifters, fastner options, roller cams, ect.) please contact us if you have a specific need.

Material: Superior iron alloy

Bore: 4.250” & 4.500”

Bore & stroke: 4.625” x 4.750” max. recommended

Cam bearing bore ID: 2.1195” – 2.1205”

Cam bearings: Special coated, grooved, w/ 3 oil holes

Cam Bearing O.S. +.010”, +.020”, +.030”

Cam bearing press: .002”

Camshaft position: Standard

Cam Drive: Std Timing chain, Gear drive or Belt drive

Cam Plug: Standard BBC 2 7/32” (2.218”) dia.

Cubic inch: 632” max recommended

Cylinder Wall Thickness: .300” min @ 4.625” bore

Deck Height: 9.800” & 10.200”

Deck Thickness: Adequate for all applications

Fuel Pump: Mechanical pump provision

Fuel Pump Pushrod: Std BBC

Freeze Plugs: Press in cup plugs

Head Gasket: Fel-Pro# 1037, 1047 or 1067

Inner Head stud: 2 slotted bosses per side

Lifter Bores: BBC .8427” - .8437”

Lifter Galley: Raised .350” for longer lifter bore

Lifter type: Roller - Gen VI (+.300 longer), Solid – Mark IV

Main bearing size: Standard BBC

Main bearing bore: 2.937” – 2.938”

Main caps: Steel Billet or Ductile Iron (sportsman) - 4 bolt, all

Main cap register: Deep stepped register on each side (No need for dowels)

Main cap press: .005”

Main cap Bolts: All 1/2”, #2, #3, #4 have splayed outer bolts

Oil system: Wet or Dry Sump - Main Priority Oiling

Oil Galley, main: Stepped, 9/16” - 1/2” - 7/16”

Oil Galley, filter-main: 5/8”

Oil Filter: Stock Oil Filter location

Oil Pan: S tandard pan bolt pattern, extra bolt holes provided for strokers

Rear Main Seal: Std 2 pc seal / Fel-Pro# 2918

Rear Main thrust width: 1.622”- 1.624”

Serial Number: On main caps

Starter: Mounts in standard location

Stud holes, Head: Blind holes

Timing chain/gears: Standard

Timing Cover: Stock cover

Torque Specs: All 1/2” bolts - 105 lbs

Weight: 4.250” bore - 280 lb / 4.500” bore - 260 lb / 4.600” bore - 250 lb


Add to Cart:

  • Model: 31263354
  • Shipping Weight: 260lbs
  • 100 Units in Stock
  • Manufactured by: DART

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Cylinder Bore Size

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This product was added to our catalog on Wednesday 19 January, 2005.