Description: Product Information Overview Specs Brand: Speedmaster Part Number: PCE281.2033 Part Type: Cylinder Heads Cylinder Head Style: Assembled Cylinder Head Material: Aluminum Cylinder Head Finish: Natural Combustion Chamber Volume (cc): 119 cc CNC-Machined Combustion Chamber: No Intake Runner Volume (cc): 320 cc Exhaust Runner Volume (cc): n/a CNC-Machined Intake Runner: No CNC-Machined Exhaust Runner: No Intake Port Shape: Rectangular Intake Port Location: Standard Exhaust Port Shape: Rectangular Exhaust Port Location: Raised Spark Plug Style: Angle Comp. Valve Job: No Intake Valves Included: Yes Intake Valve Diameter (in): 2.250 in. Exhaust Valves Included: Yes Exhaust Valve Diameter (in): 1.880 in. Valve Springs Included: Yes Maximum Valve Lift (in): 0.580 in. Outside Diameter of Outer Spring (in): 1.450 in. Damper Spring Included: Yes Number of Springs Per Valve: Dual Retainers Included: Yes Retainer Material: Chromoly steel Locks Included: Yes Lock Style: 10 degree Valve Stem Seals Included: Yes Valve Stem Seal Style: Positive stop Rocker Arm Studs Included: No Rocker Arms Included: No Rocker Arm Nuts Included: No Guideplates Included: No Valve Cover Mounting Style: Center & Perimeter Bolt Accessory Bolt Holes Drilled: Yes Intake Valve Angle: 24 deg. Exhaust Valve Angle: 15 deg. Valve Guides Included: Yes Valve Guide Material: Bronze Valve Seats Machined: Yes Valve Seat Machine Style: 3-angle Valve Seat Material: Ductile iron Steam Holes Drilled: No Oiling Style: Through pushrod Machined for O-Ring: No Heat Crossover: No Quantity: Sold as a pair. Calculator Compression Calculator Attachments Description Assembly Specifications Max Lift: .580 Coil Bind: .740 Intake Install: 145lbs @ 1.9 Exhaust Install: 145lbs @ 1.9 Closed Sear Pressure: 145lbs Open Seat Pressure: 360lbs As with all Speedmaster cylinder heads, our Big Block Chevrolet heads are Gravity Die Cast . This casting process creates a much more uniform and robust cylinder head. With the increasingly large displacements becoming common, the need for more airflow is necessary. If you are looking to build a 400-500+hp engine, give our PCE281.1489 heads a try. They offer a smaller cross - section to increase the incoming air s velocity, resulting in great driveability, power and economy. On engines over 500hp, use the rectangle port PCE281.1488 heads. The mid-size cross section works well on engines under 540cu.in and under 7000RPM. If you are working on a larger, or higher RPM engine, step up to the CNC ported PCE281.1511 heads. The added volume of the PCE281.1511 intake ports (360cc) helps to fill in the gap between As-Cast performance heads and All-Out racing heads. If you re looking for 750+hp the PCE281.1523 with their competition valve job fit the bill perfectly. HEAD GASKETS Due to the wide combustion chamber needed to fit around the large 2.250/ 1.880 valves, we recommend our PCE348.1004 MLS head gaskets. These gaskets are .041 thick, and fit bore sizes as large as 4.540 on all Mark IV and VI blocks, as well as aftermarket blocks. Felpro 1017 gaskets will also work with these head/ block combos. To install our BBC heads on Mark V blocks, you will need to use our SM5233L and SM5233R Elite Series MLS head gaskets. Alternatively, you can use Victor Reinz # 4918(R) & #4923(L) head gaskets on Mark V blocks with our heads. INTAKE GASKETS The PCE281.1488 heads work well with our PCE349.1007 rectangle port gaskets. The PCE281.1489 heads require our PCE349.1008 oval port gaskets. If you prefer Felpro gaskets, the PCE281.1488 heads take a 1275 or 1275-5 gasket, depending on the thickness you require. The CNC-ported heads (PCE281.1511 & PCE281.1523) are matched to the Felpro 1275 & 1275-5 gaskets. SPARK PLUGS Our heads require the use of 14mm. x 3/4 reach 5/8 hex gasket seat sparkplugs. Some recommended plugs are; NGK BCPR6ES or R5671A-7, Champion RC12YC, Autolite AR3923 or AR3924. Remember these are for mild street engines. Higher compression or boost requires colder sparkplugs! HEAD BOLTS / STUDS Due to the raised (+.625 ) exhaust port location on our heads, +.100 longer bolts / studs are needed next to each port. Use our PCE279.1005 head stud Kit. ARP #135-3703 12pt. Head bolts, and #235-4303 Head studs work too. If you already have a standard BBC head stud kit and are just looking for the 8 +.100 studs, use our PCE279.1006 or ARP # 235-4306. These heads should be torqued to 65ft.lbs. using high pressure moly lube or 70ft.lbs. using 30wt. oil. Please consult your fastener manufacturer for their specific recommended torque values. EXHAUST GASKETS Our BBC heads utilize a 1.88 x 1.88 square exhaust port. This exhaust port requires specific gaskets. Our PCE355.1003 gaskets are made of re-useable copper, or if you prefer paper, use our pn# SM5123. Felpro also offers gaskets that work with our heads as # 1410. Brand Information Prop 65 Warning WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/ LOYALTY PROGRAM UNLOCK / SAVE / ENJOY Earn points to climb tiers and enjoy benefits such as access to special offers and discounts, advance notice of events and promotions and more. Everyone starts with Red Status and can rise through Bronze, Silver, Gold, Platinum, Black and Vibranium. As you ascend, you become entitled to more valuable privileges. To see how your points are tracking, just login to Your Account. Terms & Conditions Policy A RETURN AUTHORIZATION is required prior to sending back any items. Items without Return Authorization will not be accepted and returned at your expense. Our parts are aftermarket performance components designed to be used in our recommended applications, installing in non-recommended applications will void any warranty. Actual product may vary from the picture(s) provided. All returns are subject to a Restocking Fee of up to 20%. Only new, unused, 100% saleable condition Products are eligible to be returned. California Residents are subject to Sales Tax. Unless otherwise specified in our description, our parts are not approved for CARB applications or other smog certifications. Please check the regulations in your state before purchasing performance and aftermarket components. International Buyers Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. Check with your countrys customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up (Please do not confuse them for additional shipping charges). We cannot mark merchandise values below value or mark items as gifts US and International government regulations prohibit such behavior. We are not responsible for the time your county's customs office holds the items. For any international sale buyer is responsible for all shipping charges including return shipping. Please Review our Terms & Conditions before bidding If you bid on any of our auctions, you are agreeing to our terms and conditions. The successful high bidder must complete the sale transaction within 5 working days from the date of receipt email notification following the end of sale. All item are Subject to CA tax. We will contact the winning bidders via e-mail within 24 hours after the auction has ended. All pictures displayed in our auctions are for illustration purposes only. All descriptions are provided in the best of our knowledge. While all care is taken, any errors or omissions in the item details is unintentional. We reserve the right to cancel/end the auction earlier. Shipping & Delivery All our auctions have a postage calculator, so please enter your postcode to calculate your shipping costs. Dispatch of goods is during business hours from Monday - Friday. Item will not ship until payment has been received in full. Once payment is received in full you will be notified by email with tracking number as well as the tracking number will be uploaded to your purchase history. Please check tracking number for shipment status and updates. We are not responsible for shipping company delays out of our control such as adverse weather conditions or seasonal delays. In the event of any delays within the tracking history please contact the respective shipping company. We will do everything in our control to get your package to you right and fast, but ultimately we cannot be held responsible for lost, stolen or damaged packages. Warranty Warranty is 12 months unless stated otherwise in the Ad description. Problems If you have a problem with a product or our service, please contact us prior to filing a dispute or posting unfavorable feedback so we may quickly try to get the issue resolved to your satisfaction. If you as a buyer do not fully agree with all of the terms and conditions detailed above please do not go through with your purchase. By purchasing this product you are agreeing to the terms and conditions contained herein. Thank you very much for interest, we appreciate your business. Product Fitment Announcement This product application notice is regarding the eBay fitment categories allocated to this listing. Seeing as we sell aftermarket parts; this listing fitment application categories cover both standard replacement and 'common upgrade' options for specific vehicle applications (eBay fitment categories). Therefore, please read the description carefully and understand your application before purchasing this item; as it may not suit your application. Please note: high performance parts are not direct replacement parts for OEM parts, and may not fit your application as original OEM parts, and may require slight modifications depending on the intended purpose of some applications.
Price: 1245 USD
Location: Rialto, California
End Time: 2023-11-18T00:42:59.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Return shipping will be paid by: Buyer
Returns Accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Return policy details:
Other Part Number: PC3021C/PAIR
Type: 281 Cylinder Head : 281 Cylinder Head [Assembled]
Material: Aluminum
California Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Manufacturer Part Number: PCE281.2033
UPC: 840136531760
MPN: PCE281.2033
Brand: Speedmaster
