Street CNC Porting LT1/LT4 Eliminator Cylinder Heads
|Small Block Chevy 195cc LT1/LT4 Eliminator Basic Package Components|
|100% CNC Ported Combustion Chambers|
|100% CNC Ported Exhaust Ports|
|100% CNC Ported Intake Ports|
|Competition 5-Angle Valve Job|
|Intake Valve, 2.050'' x 4.903'' o.a.l.|
|Exhaust Valve, 1.600'' x 4.955'' o.a.l.|
|1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs. on seat, .600'' maximum lift, max RPM 6300-6500|
|7º Titanium Retainers|
|7º Valve Locks|
|3/8'' Rocker Studs|
|Adjustable 5/16'' Guide Plates (if using non-self aligning rockers)|
|Viton Valve Seals|
|Hardened Spring Cups|
|Intake Valve Seats|
|Exhaust Valve Seats|
|Bronze Valve Guides|
|Small Block Chevy 195cc LT1/LT4 Eliminator Street Head Specifications||Head Torque w/Moly Lube||65-70 Ft. Lbs.||Rocker Stud Torque||55 Ft. Lbs.||Intake Port Gasket||Fel-Pro 375-1284 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.||Exhaust Port Gasket||Fel Pro 375-1404||Head Gasket||350ci Fel Pro 375-1074||Head Bolts & Studs||Standard ARP||Head Bolt Washers||Manley Standard||Stud Girdle||Standard GM L98||Suggested Manifold||GM LT4||Spark Plug Starting Range||AC FR3LS or 41629||Combustion Chambers||65cc||Spring Pocket can be cut to 1.625, no deeper.||Valve Spacing||Standard GM L98||Rocker Arms||Standard GM L98||Valve Angle||23°||Angle Mill||.008'' per cc||Flat Mill||.006'' per cc|
The Ultimate Bolt-on
Emissions Legal Street Weapon!
The AFR Emissions Legal (CARB EO #D-250-2 for engines up to 1994), 195cc intake port LT4 small block Chevy aluminum cylinder heads are available in an LT4 angle plug version. These heads feature a 58cc combustion chamber (can be special ordered 55 to 65cc) with a 64cc exhaust port and a 3/4'' thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm diameter stem, 2.020'' intake and 1.600'' exhaust valves with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of 2500 rpm to 6500 rpm (higher rpm ranges possible depending on combination of parts), 23° valve angle, and standard valve spacing make this the perfect street head for 350-383 ci engines. Designed specifically for 1996 Corvettes or LT4 manifold users. No special parts are required. Dual valve cover bolt pattern is standard. Exhaust port and bolt pattern are raised .100'' (3/32'') over GM L98 cylinder heads, this rarely affects header or chassis fitment. .
Installation Note: Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part number 033-8605, 1.270'' O.D. with higher spring pressures and use our Patented ''Hydra Rev Kit'' to reduce chances of valve float associated with rpm 6200 or higher.
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.