New 512 build planning

[rickseeman]

This is an interesting 2 minute video from Melling showing the oil flow through various main bearing clearances. You can't believe how tight the 1970 FSM says to run the main and rod clearance on a 440. And the Mopar B/RB manual says max allowable before overhaul just happens to be the minimum people say for a new stroker build.

 

[Spyder]

In that video, which number/flow would be preferred? Is 4 flowing enough that you're going to lose pressure and cause problems?

 

[rickseeman]

Yes .004" will cause you to lose oil pressure because of your lack of volume. Use your old HV pump. A new stock 440 is really tight like .0015". But you don't have a new stock 440. Everybody that builds a stroker wants .0025" to .0035". This means there is going to be a lot more oil flowing through your engine. 440 Source sells a Hemi pan and a 3/8" pickup. I won't even start a conversation about going to a 1/2" Hemi pickup. Everybody fights me on that. Do you realize you are going to have nearly as much horsepower as a 1970 426 Hemi Pro Stocker? Every single one of those guys used a dual line Milodon oil system and a 10 qt pan.