CNC Dart Blocks

Mullins Race Engines has just upgraded their machining capabilities with a 5-axis cnc mill. We will offer fully cnc machined dart blocks to buy with many different options. This will allow you to have a dart block fully blueprint cnc machined to your specs. Remember that out-of-state customers will not have to pay sales tax. The cost of shipping and sales tax will equal about the same money. This will allow an out-of-state customer to buy a fully cnc'd block for about the same price as you can from the local shop.

 

Standard Options

  • Line bore checked and touched up if needed
  • Square decked to a particular deck height
  • Bored and plate-honed to any bore size
  • Cylinders chamfered
  • Head bolt holes thread chased
  • Cleaned (run through spray cabinet to remove any debris)
  • Cam bearings and freeze plugs installed
  • Lifter bores sized for roller or flat tappet lifters

 

Available Options

  • Cam tunnel option (bbc-50mm-55mm)
  • Stroker clearancing
  • Bigger lifter bores (.875-.903)
  • Block lightening options

 

MRE stocks over 100 dart blocks of all different configurations. The more common part numbers and options we have machined on the shelf and are available to ship within a couple of days. The more exotic or less common blocks we can commonly have done within a week.

 

Fully Machined Dart SHP Block

(Comes bored, decked, strocker clearanced, lifter bores honed and machined down to except std tie bar lifter, line bore corrected, deburred, with cam bearings, freeze plugs, and oil restrictors installed. This block is ready to assemble.)
  $1,995
     

Fully Machined Dart SHP Pro Block

(Comes bored, decked, strocker clearanced, lifter bores honed and machined down to except std tie bar lifter, line bore corrected, deburred, with cam bearings, freeze plugs, and oil restrictors installed. This block is ready to assemble.)
  $2,495
Labor to machine 50mm cam tunnel $275    
50mm roller cam bearings $105    

 

SHP Block Lightening

Internal $650
Complete $995

  shp-block-lightening1-tn   shp-block-lightening2-tn   shp-block-lightening3-tn   shp-block-lightening4-tn

 

shp-block-lightening-operationThis operation is done as a standard procedure on any SHP block ordered with .842 lifters. This allows you to run a standard height tie-bar style roller lifter. The standard height roller lifter is approximately $125-$150 a set cheaper than the raised version.

  remove-fuel-pump-boss-tn   remove-oil-filter-boss-tn
  Remove fuel pump boss $45   Remove oil filter boss $85

 

main-caps-tnWe offer cap lightening on the SHP Pro blocks only (approximately 2 lbs. is removed) $175

 

SHP and SHP Pro Block Lightening

MRE is known for its SHP block lightening capabilities. We have no issues with strength or reliability and we do it for engine
builders not only on a national level but worldwide.
$650 internal
$995 complete

 

Dart Sportsman and Dart Little M Block Lightening

 

Internal Block Lightening

Internal-Block-Lightening-before-tnInternal-Block-Lightening-after-tnWe are offering two versions of block lightening. The first is what we call an internal lightening program. As you can see from the pictures, one of before and the other after, internal lightening has been done. We basically do all the lightening from the inside of the block. We try to remove material for weight and also remove material with purpose. Our purpose is to try to help with oil drain-back. We really open up the existing oil return passages in the intake valley of the block. The machined surface finish of the block will allow oil to flow across it better as well. The end result of the internal block lightening will allow better oil flow back to the sump area and remove approx 10-12 lbs of weight off the block without sacrificing any strength. Dart advertises their block to weigh between 200-205 lbs. After this process the block weighs approx 190 lbs.

 

External Block Lightening

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Our other program we offer is a complete Dart lightening program. This is where we do the internal lightening and we do the outside of the block as well. When this is done we are taking approx 20-24 lbs off the block. The block ends up weighing between 180-182 lbs without sacrificing the strength of the block. You can buy a CNC block with either lightening process done to it or you can send in your own Dart block and have this done. This lightening program is for a Dart Little-m block.