JEGS 514022 Details
195cc Intake Runner
Material Casting A356-A Virgin Grade, Heat Treated to T-6 Valve Guides Manganese Bronze Valve Seats Alloy, For use with Unleaded Gasoline Valve Train Rocker Stud Size 3/8"-24 Guide Plates 5/16" Flat Pushrods 5/16" Hardened, Must Check Length Spring Retainers Chrome Moly Steel (7 Degree) Single / Dual Valve Locks 7 Degree (HD) Spring Locator I.D. Locator - 1.490" x 0.060" Valve Springs Specifications Pressure Spring O.D. Type Max Lift Coil Bind Seat Load Open Load 1.250" Single 0.525" 1.160" 100# @ 1.775" 320# @ 1.200" 1.440" Dual 0.600" 1.125" 135# @ 1.800" 340# @ 1.200" Accessories Spark Plugs 14mm x 3/4" Reach - Gasket Seat - 5/8" Hex Head Bolts JEGS 555-83400 or equivalent Head Studs Standard SB-Chevy Stud Girdle JEGS 555-20510 or equivalent Rocker Arms Standard SB-Chevy for 3/8"-24 Stud Head Gasket JEGS 555-210041 or equivalent Accessory Bolt Locations Stock Placement Flow Specifications 
Flow GraphIntake Exhaust Port Volume 195cc 85cc Valve Diameter 2.020"
(Stainless Steel)1.600"
(Stainless Steel)Valve Length 4.910" 4.910" Valve Stem Diameter 11/32" 11/32" Valve Stem Seal Diameter 0.530" (PTFE) 0.530" (PTFE) Port Dimension 2.150"H x 1.300"W 1.530"H x 1.545"W (D-Shape) Flow Rate 274 CFM @ 0.600" Lift (28" H20) 213 CFM @ 0.600" Lift (28" H20) Gasket JEGS 555-210000
or equivalentJEGS 555-210052
or equivalentTorque Specification Rocker Studs 45 ft/lbs. Manifold Bolts 35 ft/lbs. Head Bolts or Studs Per Manufacturers Specifications
Specifications:
Racing technology for your high performance street engine! JEGS small block Chevy cylinder heads are cast from Virgin A356 Aluminum and heat treated to a T6 Hardness for the ultimate quality and durability. They are then machined on the latest CNC machines for accuracy and precision. We use the most up to date technology to design our intake & exhaust runners and combustion chambers for maximum performance. Our choices of intake runner volumes, combustion chamber sizes, spark plug styles and valve spring sizes insure that we have a cylinder head to suit your needs. Our cylinder heads are assembled with premium parts such as manganese valve guides, stainless steel valves and chrome-moly retainers. They feature valve seats that are compatible with unleaded fuel and also accept both standard and center bolt valve covers. Features:JEGS delivers performance right out of the box!
JEGS EZ Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.
are the rocker studs press in or screw in (prefer screw in)
Will this work on a olds 307
What length push rods do i use
Will this work on a factory rebuilt 1972 307 with stock heads that currently has a edelbrock performer intake and 4 barrel edelbrock 550 carb?
Will this work with a retro fit roller cam and if so what's the max lift the springs can hold?
What heat range of spark plug do you recommend for these heads with about 9.5:1 compression, if possible provide champion part number. Thanks
Motor Vehicles
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.
Tools:
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.
Electrical Cords
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.