MarineEngine.com - Your online store for all types of marine engines and boat parts.
PHONE ORDERS
Monday - Friday
9:00 AM - 5:00 PM EST
Click for TOLL-FREE Number
Online Checkout
Special $9.95 Flat Rate Shipping
(800) 209-9624 | Home | Contact | Shipping | Returns | Cart View your shopping cart.
Part Number Search
Shop by engine/drive part number.
Original & matching parts for sale.
Manuals & Accessories
Shop by description, item number
or manufacturer's model number.
Boat Repair Forum Boat Repair Forum   Boat Video Gallery Video Gallery
   
Results 1 to 3 of 3

Thread: New Heads

  1. #1

    Default New Heads

    Does anyone know a reason I wouldn't be able to order new heads from jegs? Or any of the other online stores?

    Baxter

  2. #2
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    5,531

    Default Re: New Heads

    lack of credit card is the only one i can think of...just be selective in what you order. Getting the 'racing stuff' is usually throwing money away when it comes to boats. You need to get heads with the proper chamber size and you want the smaller intake runner size to keep the torque peak in the lower rpm range (a balanced system working with the camshaft's profile).

  3. #3
    Join Date
    Mar 2009
    Location
    Portland, Oregon,
    Posts
    6,954

    Default Re: New Heads

    Quote Originally Posted by makomark View Post
    lack of credit card is the only one i can think of...just be selective in what you order. Getting the 'racing stuff' is usually throwing money away when it comes to boats. You need to get heads with the proper chamber size and you want the smaller intake runner size to keep the torque peak in the lower rpm range (a balanced system working with the camshaft's profile).
    + 1 !

    Are we talking about the SBC engine?
    Note that there are several light castings that have ended up on the Marine version SBC. These are generally GM castings.
    Avoid these light castings.

    Listen to Mark regarding a cylinder head chamber volume that compliments your piston selection.... or visa-versa!
    These two must be correct for one another!



    Baxter, are you building an engine, or simply replacing cylinder heads?
    I ask because if you are custom building one, now is your prime oportunity to make a better piston selection than the full dished piston.

    If you are building one, take a minute and read posts 7 and 9 here.

    .
    Last edited by RicardoMarine; 10-15-2011 at 08:22 AM.
    Rick ... aka Ricardo
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP's

Similar Threads

  1. 454 GEN IV heads
    By Take A Chance in forum Crusader Marine Engine Forum
    Replies: 2
    Last Post: 08-08-2010, 12:24 PM
  2. 350 heads
    By redsnapper386 in forum Mercruiser Sterndrive Archive
    Replies: 1
    Last Post: 08-29-2009, 02:32 PM
  3. Heads on 74 454 cid
    By paul_rodgers in forum Mercruiser Sterndrive Archive
    Replies: 2
    Last Post: 08-06-2009, 06:18 PM
  4. New Heads Are On
    By Mick Garcia in forum Volvo Penta Gas Archive
    Replies: 0
    Last Post: 07-23-2007, 09:46 PM
  5. 440 heads
    By mrwoodboat in forum Chrysler Inboard and Sterndrive Archive
    Replies: 3
    Last Post: 11-21-2006, 10:47 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •