Small Block Chevy
Use with hydraulic camshafts less than .550" max lift. Not Compatible with hydraulic roller camshafts. Recommended spark plugs are Champion RC12YC or equivalent 14mm x ¾" reach with flat gasket seat. Requires hardened pushrods. Straight plug heads.
Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
QUALITY AND AFFORDABLE PERFORMANCE!
E-Street cylinder heads are designed for entry level street performance engines operating in the idle to 5,500 rpm range. Manufactured in the USA, these heads feature the quality and details of higher priced cylinder heads, starting with A356 aluminum castings that are heat treated to T-6 spec for superior casting strength and quality.
Their modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports move more air through an engine; these features improve efficiency, resulting in more horsepower, broad torque and improved mileage potential.
Every E-Street is assembled with manganese bronze valve guides, powder metal interlocking valve seats, stainless steel one-piece valves with hardened tips, 1.25" or 1.55" diameter valve springs, 3/8" or 7/16" screw-in studs and hardened guide plates. As added value, E-Street heads include hardened valve springs cups to prevent casting wear and Heli-coil™ threaded inserts in the rocker stud bosses for proper torque; these are the quality details that most low-cost competitors leave out of their heads. Made In The USA!Features:
JEGS EZ Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.
I have a stock 290 hp / 8.0 to 1, GM 350 crate engine. Can you supply the correct pushrods for this engine and these heads without having to use a pushrod measuring tool to find out the length needed.
What would the compression ratio be with the E-Street Aluminum Heads with 70cc chambers on a standard bore 350c.i.d. with flat top pistons?
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.