0
0
×
Account Login
1-800-345-4545
Gift Cards
Track Order
Help Center
PRODUCT DISCONTINUED

Speedmaster Cast Aluminum Cylinder Head Small Block Mopar 318/340/360

746-PCE281.1654


Product Q&A
View Now
Click image to zoom
Cast Aluminum Cylinder Head Small Block Mopar 318/340/360
Cast Aluminum Cylinder Head
  • Small Block Mopar 318/340/360
  • Bare Head
  • 65cc Combustion Chamber
  • 170cc Intake Runner
  • 2.020 in. Intake Valve
  • 1.600 in. Exhaust Valve
  • Sold Individually
  • Currently unavailable.
    This product is not available, please call customer service for options, at 1-800-345-4545.
    PCE281.1654 - Speedmaster Bare Cylinder Heads is rated 4.0 out of 5 by 4.
    Rated 4 out of 5 by from Great buy So apparently there is a problem with the alternator hitting the heads, there are supposedly a few resolves for this being either fabricating a custom mounting bracket or maybe forcing washers to push alternator forward I hope there is a factory bracket that would work. Possibly try a non A/C bracket? But still worth the savings
    Date published: 2020-02-29
    Rated 3 out of 5 by from OK I Guess The valve guides are .33 id, so you'll most likely need to reem them out to 3/8 or 11/32. Good luck trying to get flow bench numbers from Speedmaster so you can match your cam for these heads. It's almost like they don't want to buy them. Other than that, the intake and exhaust grinds look good and should flow better than stock.
    Date published: 2021-07-13
    • y_2024, m_4, d_24, h_7
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_1, bvpage1
    • co_hasreviews, tv_2, tr_2
    • loc_en_US, sid_10001_10001_3011056, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Would These Heads Fit A 2002 Dodge Ram 1500 2wd 5.9 magnum slt And Would I Have To Change Out The Springs Just Want To Upgrade get Ridd Of The Old Heads..

    Asked by: None
    The Speedmaster 746-PCE281.1654 cylinder head is not for use on Magnum engines.
    Answered by: jshook
    Date published: 2024-03-28

    Hi! What's the part number for the valves on this heads?

    Asked by: Ever
    Speedmaster does not list the valve part number, but do have a head with all of the components that you can assemble. https://www.jegs.com/i/Speedmaster/746/PCE281.1146/10002/-1
    Answered by: Rusty B
    Date published: 2020-09-01
    • y_2024, m_4, d_24, h_7CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_2
    • loc_en_US, sid_10001_10001_3011056, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Related Products

    Cylinder Head Style: BareCylinder Head Material: AluminumCylinder Head Finish: NaturalCombustion Chamber Volume (cc): 64 ccCNC-Machined Combustion Chamber: NoIntake Runner Volume (cc): 190 ccExhaust Runner Volume (cc): n/aCNC-Machined Intake Runner: NoCNC-Machined Exhaust Runner: NoIntake Port Shape: SquareIntake ...
    Close
    All Speedmaster 23deg. Small Block Chevy heads are available with Straight or Angled sparkplugs. Standard valve sizes are 2.020" Intake, and 1.60" Exhaust, both +.100" length. While the 2.02" valves are standard issue, all of our 23deg. aluminum heads can ...
    Close

    Recently Viewed

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    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.

    Tools:

    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.

    Electrical Cords

    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.