AFR’s 210 LS1 Enforcer Cylinder Heads feature our Permanent Mold As-Cast Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM. AFR LS1 Stock GM Rocker Arms – GM Rocker Arms are not designed/engineered to accommodate aftermarket cams or higher spring pressures. At a minimum AFR recommends using Bushing Trunion Kit. Other available options are aftermarket kits from Yella Terra, Scorpion or Hardland Sharp. Without the proper parts you will experience accelerated guide wear. AFR 1502 LS1 210 Enforcer Heads, Cathedral Port, Bare. AFR’s 210 LS1 Enforcer Cylinder Heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. Stock GM Rocker Arms – GM Rocker Arms are not designed/engineered to accommodate aftermarket cams or higher spring pressures. General Recommendations for AFR Cylinder Heads. High Volume/Pressure Oil Pumps – If you are using a high volume or high pressure oil pump it can submerge the valve seals in oil causing smoking or oil consumption. Pushrods – Different length pushrods might be required, always check pushrod length. Check pushrod clearance with heads placed on the block before final assembly. Larger pushrods will not fit without clearancing and is not recommended since some areas are very thin. AFR recommends the use of. Mills – Flat or angle mills could affect flow numbers and might require a thicker intake gasket. Stud Girdles – Due to many available factory OEM and aftermarket style/variations your existing stud girdle may not fit (AFR heads require AFR Stud Girdles). Boosted/Nitrous Applications – We strongly recommend considering Inconel exhaust valves and AFR’s optional heavy duty intake valve for power adder applications. Since boosted or nitrous oxide applications accelerate RPM quickly, additional spring pressure is required. We strongly recommend upgrading your valve springs or increasing your valve spring pressures since boost pressure on the valve reduces spring tension. For example, 15lbs boost on a 2.125 OD valve reduces the springs closed seat pressure by approximately 40-45lbs. All MARINE Applications – We strongly recommend Inconel exhaust valves & also offer a hard anodized coating to slow the effects of corrosion. Please see note on guide clearance below. Valve Guide Clearance – Your AFR Heads come with proper guide clearance. 0012″. 0016″ for most applications. Boosted/Nitrous or marine applications might require additional clearance and it is the customer’s responsibility to verify proper clearance in these applications. Valve Springs – Forced induction, nitrous oxide and cams with aggressive ramp rates may require additional spring pressure. We offer optional valve springs for these types of applications. AFR also recommends the use of billet cam cores and short travel Hydraulic Roller lifters which tolerate higher spring loads. AFR Titanium Valves – Might require lash caps and different length pushrods. Titanium valves are coated, do not grind valves because it removes the protective coating. Piston to Valve – AFR assumes no responsibility for damage if the end user builds an engine without properly verifying he has enough piston to valve clearance (depth and radial clearance both checked). We recommend a minimum depth of. 080 on the intake valve and. 100 on the exhaust with a radial clearance of. 020 minimum around the perimeter of each valve. Clay is recommended to visually verify both depth as well as radial clearance. Just checking depth is not enough, the position of the valve pocket must also be addressed. It is the customers responsibility to verify proper piston to valve clearance. CNC Porting – Occasionally a 100% CNC ported head might have a very small area left “as cast”, this in no way affects performance. Shaft Mount Rockers – Shaft mount rockers might require additional clearance for proper pushrod fitment. Do not clearance the push rod area as the wall is. If you use Jesel Shaft Mounts, AFR only recommends their Pro Series. Comp Cams Pro Magnum Rockers – Typically these rocker arms do not clear a 1.500 O. A lash cap is required to space up the rocker arm. Spring Installation – To ease installation with 1.550 O. D or larger springs, 12 pt head bolt or studs are recommended for extra clearance. D and doesn’t need to be ground. Valve Spring Installed Heights – AFR valve spring installed height spec is +/. 015 which is the smallest shim available for adjustment. Rocker Arms – Use full roller rocker arms, roller tip rockers with stock style bodies are NOT recommended. THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. Please take advantage of the add to cart button on each listing to get everything in your cart prior to completing checkout. Speedway Motors is Americas Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 69 years. Repack the item in a sturdy box, include a copy of your invoice and complete the form on the back of the invoice. Speedway accepts full responsibility for the accuracy of our listings and product representation. The item “AFR 1502 LS1 210 Enforcer Heads, Cathedral Port, Bare” is in sale since Wednesday, December 15, 2021. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Engines & Engine Parts\Cylinder Heads”. The seller is “speedway_motors” and is located in Lincoln, Nebraska. 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- Brand: Air Flow Research
- Type: Cylinder Heads
- Manufacturer Part Number: 1502
- California Prop 65 Warning: True