185cc Aluminum Small Block Chevy Cylinder Heads
Technical Specifications and Recommended Components:
Combustion Chamber - 64cc
Weight per Pair - 55.00 lbs
Intake Runner - 185cc
Exhaust Runner - 72cc
Intake Valve Size - 2.02"
Exhaust Valve Size - 1.60"
Max. Valve Spring Lift - .575" Hydraulic Flat Tappet
Spring Pressure - Closed 115 lbs. @ 1.800", Open 315 lbs. @ 1.225"
Valve Seal Material - Viton
Valve Guide - Manganese Bronze
Retainer Material - Steel
Valve Job - 5-angle
Head Bolts - ARP 070-134-3601
Valve Spacing - OEM
Valve Seats - Hardened Steel
Intake Gasket - Fel-Pro 375-1206 or 375-1266
Exhaust Gasket - Fel-Pro 375-1405
Head Gasket - Fel-Pro 375-1004 or 375-1094
Spark Plug - 750" Reach Gasket Seat
The ProMaxx Performance Small Block Chevy Cylinder Heads are manufactured from cast aluminum and are offered with straight or angled spark plug ports, a variety of intake port runner, combustion chamber and valve sizes to work on all of your performance engine builds from mild to wild!Features
JEGS EZ Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.
I have a 1972 Chevelle with 350 engine. Can I use my original stamped steel rocker arms with these heads if I order them set up for flat tappet hydraulic cam? I am running a 350 horse 327 cam with .447" lift on intake and exhaust. Thanks
Will an edlebrock 2975 victor jr intake fit these heads?
Would these be great heads for a stock 5.3? I got bad luck with the cracked heads sadly..
I am considering the 2169 ProMaxx heads for my 1959 corvette 283 SBC which has a 56cc combustion chamber. Is this head too much to consider for a slight performance upgrade while also upgrading to the CompCam 249-12-234-2 ? This cam is close to original.
Are these heads available in bare form?
Will the included springs and hardware work on a Hydraulic Roller block or would stiffer springs be needed? Cam wouldn't be too radical, ballpark 234 at 050,. 520-.540 lift 112-114 LSA. Doing a build on a low mileage Vortec roller 350.
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.