Engine Intake Manifold 1998-pontiac-firebird-esi4271216 this makes these manifolds 75%

this makes these manifolds 75% thicker to combat cracking due to high exhaust temperatures

s diamond shaped baffle with 4 trap doors and removable windage/anti-slosh baffle provide the best oil control under demanding street and track conditions

Overtime the factory rubber isolators will dry out

Supplied is (8) 12 mm 10

Canton 85-150 Phenolic Carburetor Spacer For 4150/4160 Holley 4 Hole 1 Inch

Engine Intake Manifold 1998-pontiac-firebird-esi4271216 this makes these manifolds 75%Edelbrock part #2971 Super Victor 4500 23 degree raised port intake manifold is designed for small block Chevys with 4500 Series carburetors and 23 degree heads. This intake manifold has a large runner cross sectional area (3. 2 square inches) and a highly efficient cloverleaf plenum design.