Case 504 NA December 30, 2013 02:08PM
I'm working on a 504 NA motor and looking for advice from anyone with experience building one for a NA puller. I'm going to be running 2800-3000 rpm depending on the pull. I'm using a donor motor from a 1370 as my starting point. Right now I'm having a hard time finding info on making a cam swap and other ways to add power. Anyone out there that can point me in the right direction?

Re: Case 504 NA December 30, 2013 02:28PM
You will need to get some higher compression pistons such as a 870 as your ratio is about 15.8 to1 with the turbo engine and a N.A. piston is 16.5 to 1,might be hard to get much over 150 HP

Re: Case 504 NA December 31, 2013 05:13AM
Case800 sent you a PM.

Re: Case 504 NA December 31, 2013 08:01AM
Rdl do u no the compression ratio of a 451 non turbo and a turbo

Re: Case 504 NA December 31, 2013 08:41AM
Service book shows them both at 16.5 to 1

Re: Case 504 NA January 04, 2014 10:35AM
Voguls in effingham reground my cam for my 585minn i am building for a N/A and dennys carb shop reserfaced my lifters Vogules also made me a set of pistons to up my compression but i was faced with AGCO pistons costing the same so it was a no brainer plus go as big as you can legal run the pistons wont cost any more if you have some made

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