Mercruiser Engine Specs
 

Does anyone know of a source for engine specs such as head bolt torque, intake manifold bolt torque etc... for a 1999 7.4L engine. The motor has been reworked bore .030 over with Dart heads and roller everything, but I'd like to take it down this winter to inspect and can't locate a decent source book with the torque specs. I'm sure marine engines must have different specs and clearances than auto engines. Right?

Thank You In Advance

Kirk:confused: :confused:

Pantera24-650HP
Here is a tread welcoming Dennis Moore to OSO.
This should get you what you need.
There is a link to his book, Big-Block Chevy Marine Performance: Engine Modifications for Maximum Boating Performance

http://www.offshoreonly.com/forum/sh...bc+marine+book

Well all ya had to do.... was ask! lol The
complete breakdown of factory specs are in the link below.
I will make more as time allows & hope this helps you guys ~smile~

http://home.attbi.com/~fordhater/osostorkspecs.JPG

http://home.attbi.com/~fordhater/osostorkspecs2.JPG

CLICK HERE to see the nitty gritty!

Great job FindMe, Nice job on the web page also.
I love OSO!

Thanks for the great chart!!!!
 

Thank you very much. I will definately put the info to great use. If my engine (7.4L)has been modified should I use the 502 specs for the main bearing torque etc...? Everything has been changed to forged - Crank, rods, etc...


Thanks Again

I added the 7.4 MPI specs page, with a link to it from the 7.4 / 502 page above. Hope this helps...

Ahhh ****, here it is below...lol

7.4 MPI specs page

Ahhhh! Thanks. I needed that.:D

Hey Findme, would you happen to have the specs on the1984 era 400hp Cyclone 454 packages or where I could find them Please?....Thanks Fred

Pantera,
Are those Dart heads alum? If so, they may be torqued differently from the factory cast iron heads.

Dart Heads
 

They're cast, but thanks for looking after me...I could use all the help and checking I can get!!!!

FindMe;

As usual, GREAT JOB!!!! Do you know where to find this information on a '99 454 Magnum?? I am sure that the torque specs are the same, but I would think that the spring specs would be different..

Thanks in advance.

FRED & checkmate454mag... I will try and look those up in the next couple days for you... I intend on eventually putting as much of my factory Mercruiser info as possible on my web site for you guys, but that **** takes alot of time as you know, and whoever said you either have money but no time, or time and no money is full of ****, because I seem to be lacking on both at the same time...consistently lol I also plan on making an index with easy to follow links to whatcha need and back again, and if I can get my peenis aligned with veenis (lol) some direct discount parts links from the best in the bizz... I will do my best, but it ain't gonna be overnight, as my wife and kids will pull the slack outa my chain if I do too much at once... you know how that **** works heh??

Findme....anything you could find would be appreciated....I know what you mean about the kids....I have two teenage daughters that keep the wife and I on the edge of going nuts!!....Thanks Fred

FindMe,

Thank you.. It is appreciated. Whenever you can get the information is fine. Just let us know.

I admit to only knowing the basics about the internet but where the hell do you find all this information????

TTT