Offshoreonly.com - HP500 cam???

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - HP500 cam??? (https://www.offshoreonly.com/forums/general-q/238607-hp500-cam.html)

pslonaker

09-07-2010 10:04 PM

HP500 cam???

Does anyone have the specs for the HP500 "blue motor" for the carb version as well as the EFI/MPI version? Thanks in advance.

Rockfish71

09-08-2010 10:57 AM

I think this is it
http://www.cranecams.com/?show=brows...tType=camshaft

Griff

09-08-2010 11:29 AM

Quote:

Originally Posted by Rockfish71 (Post 3202388)

I think this is it
http://www.cranecams.com/?show=brows...tType=camshaft

That is the older flat tappet cam for the 420/525SC

The hp500 carb is a Crane 169611
http://www.cranecams.com/index.php?s...11&lvl=2&prt=5

The 500EFI is a Crane 169621
http://www.cranecams.com/index.php?s...21&lvl=2&prt=5

pslonaker

09-08-2010 06:53 PM

Thank you VERY much guys. I read somewhere...I think...possibly on Teague on Tech that the Crane 139731 cam was the same as the HP500. I am trying to get my marbles lined up...again...thank you.

ezstriper

09-09-2010 07:43 AM

there are companys re-grinding that cam as well..not sure who, but I ended up with one...

Griff

09-09-2010 07:25 PM

Quote:

Originally Posted by PSlonaker (Post 3202845)

Thank you VERY much guys. I read somewhere...I think...possibly on Teague on Tech that the Crane 139731 cam was the same as the HP500. I am trying to get my marbles lined up...again...thank you.

The 731 is very close to the 500EFI cam.

The 500HP carbed cam has a 110 lob sep and was a lot more prone to reversion.

pslonaker

09-09-2010 07:59 PM

I assume that these cams are still available thru a Mercury/Mecruiser dealer. I havent checked, but I will tomorrow. Thanks all.

formula 382 sr-1

09-09-2010 08:05 PM

Quote:

Originally Posted by PSlonaker (Post 3203896)

I assume that these cams are still available thru a Mercury/Mecruiser dealer. I havent checked, but I will tomorrow. Thanks all.

They maybe but I don't think you will want to pay the price.:party-smiley-004:

Rockfish71

09-09-2010 08:12 PM

Quote:

Originally Posted by PSlonaker (Post 3203896)

I assume that these cams are still available thru a Mercury/Mecruiser dealer. I havent checked, but I will tomorrow. Thanks all.

Call Bullet Racing cams AKA"UltraDyne" and talk to Tim goolsby 662-893-8022 he will dial you in with the right grind your looking for they can grind the 731 if that's what you want or you can tell him what you have and want and he will come up with a custom grind that will run better than the ones your looking at.

formula 382 sr-1

09-09-2010 08:20 PM

Quote:

Originally Posted by Rockfish71 (Post 3203907)

We went with bullet in the 383's and picked up 4 mph just with a cam change, I can't say that with other cams we had made.

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