Edelbrock E-Street 289-302-351 Cylinder Heads PAIR 1.90

Edelbrock E-Street 289-302-351 Cylinder Heads PAIR
*Ideal for operating in the idle to 5500 rpm range
*Made in the USA from A356 aluminum and heat treated to T-6 spec
*Larger than stock intake and exhaust ports for increased power
*Modern combustion chamber design for improved efficiency and mileage potential
*Heli-Coil® threaded inserts in the rocker stud bosses for proper torque load without damaging threads
*Hardened spring cups between the valve springs and casting for wear protection

Technical Notes: Use with Hydraulic Flat Tappet camshafts .550" max lift. (NOT compatible with Hydraulic Roller Camshafts) Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Requires hardened pushrods. 289-302 c.i.d. with 7/16" head bolts requires #9680 head bolt bushing kit. 1.90" heads are ideal for stock pistons; 2.02" heads require additional piston to valve clearance. Rocker arm studs & guide plates are not included with bare versions of E-Street cylinder heads.