7qt oil pan capacity discussion

[187z]

Originally Posted by Eman85

The trick is to figure out where the oil ends up in relation to the crankshaft. I stick the dipstick in the block with the motor upside down on the stand with no pan on it. Look to see where I want the oil in relation to the crank/windage tray. Other way is to measure the pan and pour the 6 or 7 qts of liquid in the pan and see where it ends up.

X2

[65StickStang]

Originally Posted by beaslyb

One has a Canton the other has a Milodon

Originally Posted by beaslyb

What happened? You pretty sure 1qt low is what caused the issue?

I never had a problem with my Canton pan when I shifted at 7,200 but when I put a real cam in it that would peak at 7,900 I started spinning it to 8,200 and be around 8,3000 at the stripe. Even with a standard volume pump, it would fill the valve covers and burp oil through the vacuum pump at the stripe. Something we didn't have an issue with on the dyno as there where no negative G's and didn't catch it on the gauge. I was more annoyed with the oil burping than realizing it had an issue so the plan was to add drain back lines and figure out the issue after the season was over. The bearings had other ideas so it took itself apart at the stripe. The extra quart may have kept it together, don't know......

[SBP436]

id run 6 in both.

[n2omike]

Originally Posted by 65StickStang

I never had a problem with my Canton pan when I shifted at 7,200 but when I put a real cam in it that would peak at 7,900 I started spinning it to 8,200 and be around 8,3000 at the stripe. Even with a standard volume pump, it would fill the valve covers and burp oil through the vacuum pump at the stripe. Something we didn't have an issue with on the dyno as there where no negative G's and didn't catch it on the gauge. I was more annoyed with the oil burping than realizing it had an issue so the plan was to add drain back lines and figure out the issue after the season was over. The bearings had other ideas so it took itself apart at the stripe. The extra quart may have kept it together, don't know......

Interesting... I have an 8 quart Canton Road Race pan on my 306. I run 7 quarts in it. It shows one quart low on the factory dipstick. Have run the pan for decades, but have also run the oil restrictor kits Price Motorsport Engineering use to sell. Also only shift at 6800 rpm. Never an issue.

However... The upcoming 363 will rev a bit higher... probably at least 7500 rpm, so I'd be interested in any experience or words of wisdom you'd like to share. Which Canton pan are you running?

[SBP436]

rehermorrison.com/techtalk98oiliseverything....A GREAT READ

[65StickStang]

Originally Posted by n2omike

Interesting... I have an 8 quart Canton Road Race pan on my 306. I run 7 quarts in it. It shows one quart low on the factory dipstick. Have run the pan for decades, but have also run the oil restrictor kits Price Motorsport Engineering use to sell. Also only shift at 6800 rpm. Never an issue.

However... The upcoming 363 will rev a bit higher... probably at least 7500 rpm, so I'd be interested in any experience or words of wisdom you'd like to share. Which Canton pan are you running?

I believe it was a Canton 15-610 with a windage tray. Like I said, it worked great for years until I started pushing more rpm. When I first started getting oil in my tank I switched the draw location from the front of the valve cover to the top. That helped a lot but still got a 1/3 of a cup of oil every pass. Never got a drop running on the street or during the 20ish pulls we made on the dyno so I did a little test. I put a 90 degree elbow in the valve cover at the base with a foot of clear hose. We threw it on the pump and made a pull to 8,200. Everything was fine until the rpm went above 7k. It was filling the covers up! It's a Dart SHP block and so it doesn't come machined for restrictors, we'll drill and tap our own. If the oil level still gets high (shouldn't), I'll just run drain lines from the heads to the pan to help.

[juiced coupe 78]

Originally Posted by makinchips

Turn mine 6000 or so and use a factory 1993 ford pan. 6qts no issues.

I run the factory pan with the extra large filter, with 5 quarts. Reads 1 quart low on the factory dipstick.

Originally Posted by n2omike

Interesting... I have an 8 quart Canton Road Race pan on my 306. I run 7 quarts in it. It shows one quart low on the factory dipstick. Have run the pan for decades, but have also run the oil restrictor kits Price Motorsport Engineering use to sell. Also only shift at 6800 rpm. Never an issue.

With the factory pan running 1 quart low, I shift at 7200.

When running 1/8 mile, I have stayed in second gear on purpose. Even with the factory pan and a hydraulic roller, it revved cleanly past 8000 with steady oil pressure.

[8URZ28]

We saw some oil pressure fluctuations on the Dyno with 7 quarts in my pan, also picked up a few hp after taking out a quart

[65StickStang]

Originally Posted by juiced coupe 78

When running 1/8 mile, I have stayed in second gear on purpose. Even with the factory pan and a hydraulic roller, it revved cleanly past 8000 with steady oil pressure.

You're a lot luckier than I was

[makinchips]

Originally Posted by juiced coupe 78

I run the factory pan with the extra large filter, with 5 quarts. Reads 1 quart low on the factory dipstick.



With the factory pan running 1 quart low, I shift at 7200.

When running 1/8 mile, I have stayed in second gear on purpose. Even with the factory pan and a hydraulic roller, it revved cleanly past 8000 with steady oil pressure.

What lifters and valvesprings pressure?

[beaslyb]

Well. What is the ideal or desired depth of oil on the crankshaft?

[Suicidal Racing]

i run a 7qt on my ls stuff,factory though they only use 5.5qts..i figured if that is plenty for ls an been proven to be enough capacity why stick 7 in my 7qt pan an cause windage..so 5.5 is all i use in mine an turn them 7k+

[beaslyb]

Originally Posted by 65StickStang

You're a lot luckier than I was

Your motor sbf? I have a Canton windage screen on the way damn bolts are just as expensive as the tray

[65StickStang]

Originally Posted by beaslyb

Your motor sbf? I have a Canton windage screen on the way damn bolts are just as expensive as the tray

Yes. 8.2 SBF 3.4 stroke now 4.155 bore

[juiced coupe 78]

Originally Posted by makinchips

What lifters and valvesprings pressure?

Comp 851, which is nothing more than a stock replacement Elgin lifter.

Springs are 1.48 OD. Originally, they were 180 closed and 470 open. I'm sure that they are a little lower now. They came with the cam from CI in a white box. Probably from Associated Spring.