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Oil pan to header clearance

7K views 15 replies 6 participants last post by  LevonH 
#1 ·
What's the minimum recommended?

The headers have one primary tube on the driver's side that bends towards the oil pan. It is fine witrh a stock pan, but it will hit with a kickout pan such as the Milodon 30950.

I ran this pan in the past with a hammered in dimple to clear the pipe.
I may need to go back to a pan like that with the new 496, I don't think the stock replacement pan is ideal.
This time I ould cut and weld the pan for clearance, looking for how much room I should give between the primary tube and the pan.

Street-strip 67 chevelle.
 
#4 ·
I think that I'd dimple the offending header tube before I'd dimple the oil pan. It's a high air turbulence area, so with plenty of air passing by there, it doesn't need a wide gap between the pan and header tube in order to avoid heating up the oil more than it gets ordinarily.
 
#5 ·
I can't dimple the header tube enough, there is too much interference.
The dent it pounded into the pan last time was quite large, not some little dimple.

I can't use header wrap or other insulators, it's right below the oil filter so it gets oil dumped on it every time the filter is removed.
 
#6 ·
Milodon offers some real good pans which offer a good amount of clearences just about everywhere. I think you should take a look on their website, and shop for a better pan. Because it's either that, or you have some very poor fitting headers there. On my 632 motor, I have 2 1/8" diameter primary tubes and 3.5" diameter collectors on my headers, and they aren't even custom pieces, and with the 8 quart pan I had and the present 6 quart pan I have on the motor, I never had an issue with the header tubes being close to the pans. And both of them are kicked out. seems to me that you can find a more suitable oil pan.
 
#7 ·
Any oil pan with a kickout on the driver's side will most likely need to be modified for clearance. I have no strong preference for any model # or manufacturer, I mentioned the Milodon 30950 because I used that one before and know the problem.

It's no big deal to cut and weld a new oil pan, I was just looking for suggestions on how much clearance to give between the two.

The headers fit fine. They are Doug Thorleys I bought in 1991 and have been running since then. they were designed to clear a stock chassis and a stock oil pan, which they do quite well.
 
#8 ·
Any oil pan with a kickout on the driver's side will most likely need to be modified for clearance.

They are Doug Thorleys I bought in 1991
Not so. My Moroso 20403 clears my Hooker 2455's just fine, many people here running that setup...

Were there kickout pans back then? :D
 
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