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Old 10-30-2019, 08:42 PM   #31
beaslyb
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Default Re: 7qt oil pan capacity discussion

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Originally Posted by 65StickStang View Post
Yes. 8.2 SBF 3.4 stroke now 4.155 bore
Basically same motor then. Im 4.040 bore I guess really just need to know where the oil needs to be on the crankshaft really to determine oil level. Everyone in here has contributed something positive and constructive but it baffles me that there is still a mystery to how much oil an 8.2 deck motor needs with a 7 qt oil pan. Itís still very controversial. I feel like with my own findings (without disagreeing) that 5.5-6 is a plenty? Who knows I guess.
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Old 10-30-2019, 08:49 PM   #32
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Default Re: 7qt oil pan capacity discussion

Problem is I’m willing to take some chances on the street motor but don’t wanna take any chances on racecar. Way too much invested and 7qts has been working but not sure to full potential.
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Old 10-30-2019, 09:30 PM   #33
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Default Re: 7qt oil pan capacity discussion

You don’t want the oil anywhere near the crank. It whips enough around creating an aerated mess just with the shit raining down on it. You need enough in the pan so the pickup won’t come uncovered and start sucking air.
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Old 10-30-2019, 11:14 PM   #34
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Default Re: 7qt oil pan capacity discussion

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Originally Posted by sscamaro2485 View Post
The idea of a deep pan is not to add more oil its to get the oil farther away from the rotating assembly. I have a big double kick out Moroso aluminum pan on my engine. It could probably hold 8 qts. I run 6 qts usually and if I need to pick it up I run 5. It has a screen windage tray which is supposed to be better than a solid one. No problem with oil pressure even at near 9K in the lights. Standard pressure and volume oil pump.
I always thought the idea was to add capacity to avoid draining the pan and to have cooler oil. But good points you made here.
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Old 10-30-2019, 11:22 PM   #35
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Default Re: 7qt oil pan capacity discussion

If 6 quarts are not in the pan, then there are probably drain back issues from the heads.
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Old 10-31-2019, 02:06 AM   #36
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Default Re: 7qt oil pan capacity discussion

For my AMX, I just had a custom pan made by Pro-Pan in Oklahoma. Very good to deal with. It’s 8” deep front to back and sizable kickoff on passenger side. It would probably had 30 quarts. But 10quarts is approximately 2.5” from the bottom and that keeps the oil plenty from the crank yet enough to keep the pickup covered all the time. I have external filter and external pickup so there’s over a quart lost in the lines and then the filter. Same pan on a buddies car was worth over 2 MPH on a high 8 second car. Think about how much HP it takes to go +2 MPH. How much would you spend on the engine hard parts to realize 2 MPH?
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Old 10-31-2019, 08:32 AM   #37
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Default Re: 7qt oil pan capacity discussion

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Same pan on a buddies car was worth over 2 MPH on a high 8 second car.
That's incredible
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