478 Hercules Sleeve August 02, 2011 07:01AM
Anyone know the cylinder sleeve dimensions for a 478 Hercules? Basically want to know the thickness.

Re: 478 Hercules Sleeve August 02, 2011 09:32AM
The bore of a hercules sleeve is 4 9/16 " and the od is 4 3/4.

Re: 478 Hercules Sleeve August 02, 2011 09:51AM
Thank you!

Re: 478 Hercules Sleeve August 02, 2011 12:05PM
May I ask what you are working on with the 478 Hercules. I have one out of a military truck and am looking for ways to build it up. Eventually i think im gonna pull it in a 466 cube 3x4 turbo unlimited rpms. Any help would be greatly appriciated thanks

Re: 478 Hercules Sleeve August 02, 2011 04:44PM
I might use the Hercules sleeves in a different engine but still doing research. At some point I might tinker with a Hercules for a super farm or limited pro type class but time will tell.

Re: 478 Hercules Sleeve August 03, 2011 07:03AM
Try the 8.3 cummins alot better that the 478. Strong botttom end!!!

Re: 478 Hercules Sleeve August 03, 2011 12:58PM
Have you ever seen the bottom of a hercules they don't get much stronger than that.

Re: 478 Hercules Sleeve August 03, 2011 01:07PM
Your right it is built tough like a JD 466.

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