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Engines are considered the "heart" of a vehicle. With that being said, engines are built and assembled with accuracy. With over 25 years of import drag racing history and over 20 years of in-house engine building, we know what it takes to build a reliable motor for the street and track. 

 Our experience has come from years of our own racing, research, and development. We know what it takes to build a race engine, and that knowledge is put to any motor we build.

In-house Machine Work 

All machine work on the short blocks are done in-house."Allenbuilt" signature engines are personally built by Jeremy Allen himself using the state of the art Rottler F-67A 3-Axis CNC machine.

Race Ready Internals

Our customers receive the same quality parts we use in our own race engines. AEBS sleeves are used because of their well designed sleeves. These sleeves are created from high quality ductile iron and are machined with precision to insure a perfect fit. AEBS's closed deck design provides bullet-proof strength in our race engines, therefore it is more than adequate in any street motor. Although we recommend AEBS closed deck sleeves, we are also able to provide open deck style sleeves.


The advantages of building our motors in-house, we have the ability to build your custom motor exactly to the specs requested. CP Pistons are used in our race engines as well as our customers motors. The pistons are designed and machined to Jeremy's custom specs. His custom design of the piston for the F20C/F22C blocks will resolve a specific problem other builders do not know about. 


After the sleeves are pressed into the block, it is now ready to be honed. Jeremy has created his own techniques and steps to hone his blocks. The sleeves are honed in a specific cross hatch pattern to insure that the rings will seal correctly. A special technique is used to insure that the sleeves do not go out of round during the process.


Building an engine requires meticulous measurements and pinpoint precision. We build our customers' engines with the same precision and accuracy as we do with our own race engines.  cc's the domes, a method used to measure and insure the correct compression requested in a custom engine, which not many builders do anymore. Every engine built is fully balanced,assembled, and blueprinted. All specs are confidentially filed away, but are available to the owner of the engine upon request.



In the end, after all said is done, you will receive a fully built and balanced short block ready for install. Short blocks are sleeved, assembled,and finished within 3-4 weeks. If custom compression pistons are required that are not stocked, please allow an additional 4 weeks for the custom piston order.

Engine Sleeving closed deck

 B Series      $1495

 D Series      $1495

 F Series      $1495

 H Series      $1495

 K Series      $1495

 J Series       $2550

*InlinePRO closed deck sleeves are used

*Prices are with customer supplied cores


Engine Sleeving Open deck

 B Series      $1350

 D Series      $1350

 F Series      $1350

 H Series      $1350

 K Series      $1350

 J Series       $2395

*InlinePRO closed deck sleeves are used

*Prices are with customer supplied cores


InlinePRO Signature Short Blocks

 B Series      $3495

 F Series      $3995

 H Series      $3995

 K Series      $3995

*Prices are with customer supplied core

*includes: inlinePRO sleeves, CP pistons, inlinePRO rods, ACL race bearings, Hot tank, Resurface, Bore, Hone, Gap rings, 

Measure Bearing clearance, Balance, Micropolish Crankshaft, Blueprint, Assembly


InlinePRO Signature Cylinder Heads


Stage 0 - B16/B18/K20/K24/H22/D16     $899.00

Stage 0 - F20C / F22C                          $1195.00


Stage 1 - B16/B18/K20/K24/H22/D16     $1295.00

Stage 1 - F20C/ F22C                          $1595.00


Stage 2 - B16/B18/K20/K24/H22/D16     $1595.00

Stage 2 - F20C/ F22C                          $1895.00


Stage 2.5 - B16/B18/K20/K24/H22/D16   $1695.00

Stage 2.5 - F20C/ F22C                       $1995.00


Stage 3 - B16/B18/K20/K24/H22/D16     $2195.00

Stage 3 - F20C/ F22C                          $2495.00


Stage 3.5 - B16/B18/K20/K24/H22/D16   $2695.00

Stage 3.5 - F20C/ F22C                       $2695.00


Stage 4 - B16/B18/K20/K24/H22/D16     $2995.00

Stage 4 - F20C/ F22C                          $2995.00


**Pricing with customer provided core**

Machine Shop Services

 Hot Tank Block     $75

 Hone Block*        $187.50

 Bore .020 Over       $187.50

 Bore Custom Size*     $300

 O-Ring Block             $250

 Bore and Hone FRM Sleeves     $375

 Finish Hone FRM Sleeves    $200


*Customer must supply neccessary components for proper measurements


Engine Building Services

 Short Block Assembly

*Hot tank, Resurface, Bore, Hone, Gap rings,

Measure Bearing clearance, Balance, 

Micropolish Crankshaft,  Blueprint, Assembly    $1250


 Long Block Assembly Turbo

 *degree in long block assembly      $650


Long Block Assembly NA

 *degree in long block assembly      $950


 * OEM sleeve F24C performance build includes inlinePRO piston set,InlinePRO F24C connecting rods, New modified OEM K24 crankshaft, ACL race bearings, disassemble, hot tank, resurface block, bore and hone FRM sleeves,micropolish crankshaft, gap rings, measure bearing clearance, balance,blueprint, and assembly. $3995 (you must provide core shortblock)


* OEM F20C/F22C sleeve performance build includes inlinePRO piston set,InlinePRO connecting rods, ACL race bearings, disassemble, hot tank, resurface block, bore and hone FRM sleeves, micropolish crankshaft, gap rings, measurebearing clearance, balance, blueprint, and assembly. $2995 (you must provide core shortblock)