Product Information
Overview
Item Condition: Brand New
Specs
| Brand: | Speedmaster |
| Part Number: | PCE281.1488 |
| Part Type: | Cylinder Heads |
| Cylinder Head Style: | Bare |
| 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: | No |
| Intake Valve Diameter (in): | 2.250 in. |
| Exhaust Valves Included: | No |
| Exhaust Valve Diameter (in): | 1.880 in. |
| Valve Springs Included: | No |
| Damper Spring Included: | No |
| Retainers Included: | No |
| Locks Included: | No |
| Valve Stem Seals Included: | No |
| Rocker Arm Studs Included: | No |
| Rocker Arms Included: | No |
| Rocker Arm Nuts Included: | No |
| Guideplates Included: | No |
| Valve Cover Mounting Style: | 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 individually. |
| Notes: | Exhaust port raised 0.625 in. from stock |
| Calculator | Compression Calculator |
Attachments
Description
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
In 1979, the company was founded with Pete's Performance, which was a small speed workshop. It began by building engines for customers as a hobby, and it has now grown to include selling, assembling, manufacturing and racing high performance engine parts. Over the years, the company has grown into a worldwide high performance powerhouse. Growing from a one-man bricks-and-mortar business; to now a supply chain in which entails more than 400+ people all across the world. Today, Pete's Performance has evolved into the internationally known Speedmaster: which has distribution centres and offices is Sydney, Los Angeles and Shanghai.
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/
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Terms & Conditions
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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.
- Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Check with your country’s 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.
- 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.
- 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 is 12 months unless stated otherwise in the Ad description.
- 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.