All “crate” engines used in competition must be Music City Motorplex approved. Track officials may use an engine provided by the manufacturer as a guide in determining whether a competitor’s engine conforms to the specifications set forth by the manufacturer. Any engine, which does not conform to specifications, will not be eligible for approval and competition.  All crate engines are subject to MCM inspection processes.  MCM is not required to follow any other sanctioning bodies or manufacturers’ inspection processes. 

1.             ELIGIBLE CRATE ENGINES

1.1  LATE MODELS:

           See Section 13 NASCAR Whelen All American Series Late Model Stock Car

       SUPER TRUCKS:

                Chevrolet:  ZZ4 355HP #88958603

                Mopar/Dodge:  None available at this time.

                Ford:  if available, will be specified by technical bulletin

                Includes block, heads, intake manifold, oil pan and distributor; absolutely no internal modifications or component substitutions (unless specified by

MCM technical bulletin) are permitted.  Crate Engines must meet Manufacturer’s Specifications, including ignition timing and valve lash, spark plug manufacturer will be left up the owner, however must meet physical characteristics in every way.

       GRAND NATIONAL SPORTSMAN:

                Chevrolet:  350HP #88958602, includes head, intake manifold, oil pan and distributor; absolutely no internal modifications or component

substitutions (unless specified by MCM technical bulletin) are permitted.  Crate Engines must meet Manufacturer’s Specifications, including ignition timing and valve lash, spark plug manufacturer will be left up the owner, however must meet physical characteristics in every way.

1.2   Existing “crate” engines may be repaired or rebuilt and resealed by only the approved ASA or MCM rebuilder(s) only.

1.3   Music City Motorplex officials may require any or all crate engine powered race cars and trucks to undergo the following inspection processes:

(1)    Any vehicle may be submitted for dyno testing at any time, without notice and if the motor incurs any damage, MCM may not be held liable.

(2)    Any motor may be completely disassembled at any time without notice.

(3)    MCM officials may choose to have an outside party inspect the motors at any time

1.4  CRATE ENGINE CLAIM:  $1,000.00 plus the taxed retail price of engine as raced in the event.

1.5  On all crate engine inspections, both competitor protest and track protest, if the crate engine shows evidence of any internal component

being altered or changed from factory specifications, minimum four (4) event suspension and/or cash fine of no less than $500 with loss of any and/or all

parts illegal.  Event suspension includes vehicle, driver and owner.

1.6   Electrical 355 and 350 HP engines:  Allowed only HEI distributor #1104067 with stock GM ignition module.  GM HEI must run stock ignition coil with GM

specifications on ignition timing. 

1.7   Additional specifications will be issued by technical bulletin.