CYLINDER HEADS GM LS3 BARE 11DEG PAIR

LS3 11Deg Cylinder Heads, Pair, Bare.

This head was designed to allow owners of Gen III ls engines to benefit from the much-improved stock LS3 intakes.  

This head really thrives when paired with a Stroker combination like a LS1 383!

•Easy bolt on to convert your GM Gen III to GM Gen IV head technology

•Perfect for LS1, LS2 and LS6 engines and short-blocks

•Accepts LS3/L92 valve springs, rocker arms, and intake manifolds

•Outflows any aftermarket cathedral cylinder head on the market

•Uses a 2.160" intake valve and 1.60" exhaust valve

•11 Degree Valve angle

•Has a 61cc combustion chamber standard

•6 Bolt Standard

•Has a deck thickness of .750"

SPRING:

PAC Racing 1204x 0.700" lift  for naturally intake 

PAC Racing 1207x0.750" lift for force intake/factory rockers

Intake Valves: 2.165x 5.45"

Exhaust Valves:1.60x5.45"

Specifications and Features:

Material-                                  A356

Intake Port Volume-                255cc

Intake Port Location-               Stock

Exhaust Port Volume-              92cc

Exhaust Port Location-            Stock

Combustion Chamber-           68cc

Valve Angle-                           11 Deg

Minimum Blore Diameter-     4.000"

Maximum Valve Lift (in)-        0.55"

Guide-                                    8mm

Intake Seat                              2.165"

Exhaust Seat-                         1.60"