LS Chevy Hemi
Nick Arias Jr. Racing Components presents the world’s first "LS-AH" Chevy Hemi® cylinder head for G.M. LS series blocks. The Arias LS-AH head kit will easily adapt to any G.M. LS factory or aftermarket block, with a few minor modifications.
Arias Jr’s cast aluminum Chevy Hemi® head is poured from 356 T-6 alloy and features full water jacketing throughout. Offered are two choices of chamber design; full round hemisphere or "Pro-Stock" inspired figure-8 shape with quench pads – both with central spark plug location for maximum combustion effectiveness.
This bolt-on or complete Crate Engine package is ready for the street rodder having the desire to stand out from the crowd; or the hardcore racer looking for the power and torque of a genuine Hemi® for their LS series foundation. Turn your run-of-the-mill LS wedge into a hemispherical-chambered hero and put the spark plug holes running through the middle…where they belong!
Part# 201113-001-02 - Water jacketed, assembled (pair): $9,975.00
Part# 201113-002-02 – Solid, bare, with seats & guides (pair): Call
Features:
- Compact 74cc full-hemisphere or 67cc "Figure 8" quench chambers
- High-efficiency ports flow up to 380 cfm for intake and 268 cfm exhaust @ 28", out of the box
- 409 cfm intake and 301 cfm exhaust with CNC porting. Excellent low to mid-lift flow
- Stainless steel 2.260" intake and 1.600" diameter exhaust valves come standard. Titanium and Inconel valves optional
- Manganese bronze valve guides
- Heat treated ductile iron valve seats
- Can accept valve springs up to 1.650" diameter, based on application requirements
- Tool steel springs standard with custom race springs optional
- Shaft style roller rocker arm assemblies with rocker oiling through the pushrods like stock LS
- Investment cast 4340 steel roller-tip rocker arms with dual needle bearings and H-13 lash adjusting screws
- Cast aluminum finned valve covers supplied with breathers, oil fill caps, o-ring seals, spark plug tubes and hardware. Choose either black wrinkle, hi-luster polished, carbon fiber or plain finish
Includes:
- NA Jr. pushrod set
- NA Jr. ARP head stud, nut, washer kit
- NA Jr. COMETIC head gasket set
- NA Jr. oil drain back line kit
- NA Jr. Hemi header flanges & hardware
- NA Jr. intake & exhaust gaskets
- All related fasteners
Requirements:
- ARIAS PISTONS Hemi piston kit
- NA Jr. intake manifold (carburated/e.f.i. or intercooled supercharger)
- NA Jr. oil drain back bungs
Options:
- NA Jr. billet valley cover kit
- NA Jr. billet carburetor/injector hat/throttle body manifold adaptors
- NA Jr. thermostat log, cast
- Milodon oil pan with oil drain back bungs
