Some cast iron heads have the casting number on the underside of an intake runner. Some aluminum heads have the casting date on the underside of an intake runner. The casting number of the cylinder head follows the same form as those found on blocks. There will be six to eight digits ...
Casting Numbers 12646956 Material Rotocast A356-T6 Aluminum Combustion Chamber Volume 65.47cc Intake Port Shape Rectangle Intake Runner Volume - Intake Manifold Bolt Pattern LT4 Specific Exhaust Port Shape Flat Oval Exhaust Runner Volume - Cylinder Head Bolt Style Torque to Yield (TTY) Cylinder Head ...
We get a number of inquiries regarding casting numbers, engine build dates and engine assembly/suffix codes. Many folks want to know where to look for these Chevy engine casting numbers and codes on blocks and cylinder heads so we decided to put these pages with photos together to help you ...
Newer variants of the 454 use aluminum heads but share the same cast iron block. They also share the exact same displacement and bore x stroke of 4.25″ x 4.0″. Firing order for the Chevy 454 is 1-8-4-3-6-5-7-2. Early versions of the 7.4L V8 were able to deliver 360-450 hor...
If you are looking to find the best aluminum heads for small block Chevy, it is easy to break the bank searching for the perfect one. Their long history makes
In contrast to the SB2's "mirror port" cylinder heads, the Chevrolet R07's aluminum cylinder heads resemble production LS-series small-block cylinder heads with alternating intake and exhaust valves. The R07's shallow valve angle produces a compact, efficient combustion chamber design that produces...