NEVERSATISFIED

Is the 741 Cam installed in my 2000 500 EFI or is it only installed in the 525's. If they are different could someone post spec. for both cam's.
Thanks Steve

Griff

The 525efi cam is 741 ground a 114 lob sep.

The 500efi cam is just slightly smaller than a 731, I think its #169621

czy40p

Pretty sure this is the 454 cam link.

http://www.cranecams.com/index.php?s...71&lvl=2&prt=5

formula377

What is the 500HP carbed cam # ?
I have a set of carbed 500hp's in the boat right now and a set of 454 420hp sitting in the garage.

I am thinking about a 454 build up and just store the 500's for stock later.

I know a 500 build would be better, but any ideas about a 454 build?

wannabe

The 741 cam is to much cam for a 454 IMHO unless using blowers. The Crane 168731 is the way to go.

Wannabe

GETTINBYE

Formula377

The HP 500 carbed use the Crane 169611. Slighty smaller than the 169621. You can get the cam card on Cranes website.

Mark

formula377

Thanks that helps gettinbye
My mind is all over the place with options.

formula377

I wonder what the difference would be in the HP 500's with Hardin marine header lowers and the 169621 cams?

Would the ignition have to be changed as well?

Griff

Probably the best cam to go with to upgrade your 500HP's is the 525efi cam. Its a Crane 741 ground on a 114 lob sep. The hardin lowers won't add anything. I gained zero when I switched from Gils to CMI's on my 525sc.

The stock ignitions will be fine.

Ghostrider

Why is the 741 too much for a 454? I plan to run one but I may have a 731 on standby as well...

I need power (mental problem), so I figured if the Gen VI can take the 741 why not?

Any thoughts? I'm a little worried now! (I may also have a brand new 741 for sale soon too!)