Hemi Stroker Motors (Click for more info!)
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Nobody builds more Hemi strokers than Inertia Motorsports and we build them all in-house. When you call 512-964-7724 to speak with Stu, you'll be speaking with the guy actually putting your engine together.

 

Call today to spec out your Inertia build and join the 350+ customers running our engines in their Modern Mopar (and in some cases, their old school Mopars, like the 445 we did for a 1970 Superbird in 2015!). In 2013 we built a 392 for NFL superstar Larry Fitzgerald and we would love building an engine for you, too! 

 

Pricing:

 

Short blocks for naturally aspirated though heavy boost (with below noted options)  

$4750 with core exchange:

6.1/392  (recommend  Medium NOS/Boost with std rods of for heavy NOS/Boots with 6.200 turbo rods)
5.7/370   (recommend  medium NOS/Boost with std rods or for heavy NOS/Boots with 6.200 turbo rods)

Pistons:

CP forged 2618 alloy 10.75 or 9.5 with steel/gas nitrided top  rings and napier second  rings.  rings can be gapped and pistons sized for naturally aspirated,  medium NOS/Boost or heavy NOS/Boost.  4340 billet wrist pins stock  0.180 wall 0.866 dia on 6.1/426 and 5.7/400 engine with 0.200" available as no cost option. 4340 billet wrist pins stock 0.180 wall 0.927 dia on 6.1/392 and 5.7/370 engine with 0.200" available as no cost option. 310 tool steel wrist pins in multiple wall thicknesses available as $145 option on all builds.

Custom pistons available as extra cost option in any compression, bore, options like gas-ports and additional light weight machining or extra strutting available

Rods:

Molnar technologies 4340 chrome molly h beam rods. 6.200 long, 2.100"  chevy journal size and 0.927 dia small end with bushings and ARP 2000 bolts 7/16"    Standard rods recommend for Natural aspiration through light boost/NOS and turbo rods recomended for Heavy boost as $100 option

Crankshaft:

Molnar technologies 4340 chrome molly crank 3.795 stroke for 370/5.7 and 392/6.1.   2.100 rod journal, balanced with toner ring, 1/8" radius fillet, non cross drilled for high RPM oiling

H type clevite and ACL bearings.   clearances  for  natural aspirated, mild NOS/Boost or heavy NOS/Boost  depending on  application

ARP main and main studs recommend for all boost and NOS applications  $150 option

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Short blocks for naturally aspirated through medium NOS/Boost (with below noted options) 

$4650 with core exchange:

5.7/400  (recommended for naturally aspirated with std rods or light-medium NOS/Boost with 6.125 turbo rods)
6.1/426
(recommended for naturally aspirated with std rods or light-medium NOS/Boost with 6.125 turbo rods)


Pistons:

CP, forged 2618 alloy pistons 10.75 or 9.5 with steel/gas nitrided top rings and napier second  rings.  rings can be gapped and pistons sized for naturally aspirated, medium NOS/Boost or heavy NOS/Boost.   4340 billet wrist pins stock 0.180 wall 0.866 dia on 6.1/426 and 5.7/400 engine with 0.200" available as no cost option.   

9310 tool steel wrist pins in multiple wall thicknesses available as $145 option on all builds.

Custom pistons available as extra cost option in any  compression, bore, options like gas-ports and additional light weight  machining or extra strutting available


Rods:

Molnar technologies 4340 chrome molly h beam rods.  6.125 long, 2.0"  chevy journal size and 0.866 dia small end with bushings and ARP 2000 bolts 3/8".    
Standard rods recommend for Natural aspiration through light boost/NOS and turbo rods recommend for Medium boost as $100 option.
 

Crank:

Molnar technologies 4340 chrome molly crank 4.080 stroke for 400/5.7 and 426/6.1 engines.   2.000 rod journals with 1/8 radius fillet.  Non cross drilled for high RPM oiling.

H type clevite and ACL bearings.   clearances  for natural aspirated, mild NOS/Boost or heavy NOS/Boost  depending on application

*************************************************************************************************
Options available for all short blocks:


ARP main and main studs recommend for all boost and NOS applications  $150

Custom Cam 8620 billet, copper plated for consistent heat treating  $500 for non vvt and $700 for VVT

Oil pumps:

5.7 melling (Same as OEM)   $125
6.1 melling (Sames as OEM)  $180
Melling changeable relief spring $195

Coat piston tops with thermal barrier coating $210
Coat piston skirts with teflon or molly coat $195

Commetic head gaskets 185-250 depending on thickness.

Upgrade to Crower 93 series billet rods  $1200
Upgrade to Carrillo Super A rod  $1200
Upgrade to Carrillo H beam rods $1400

ARP head studs  $395

6.1 Timing set $185



Hemi Stroker Motors (Click for more info!)

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