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  #1  
Old 01-28-2024, 10:06 AM
reacp911 reacp911 is offline
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Join Date: Dec 2023
Location: Toronto
Posts: 18
Default 400 block main cap dimensions
Hi all

I'm still designing my custom road race oil pan, but I still haven't had the courage to pull the motor

Could someone measure the main cap dimension from block to windage tray mounting bosses if you have a motor open or a spare cap?

I need to determine the gap between the stock oil pan and the windage tray to determine how much gap there is for oil return. If it's less than say 3/8 I may need to use the canton pan I'm currently running because its deeper at the front of the motor.

Thx
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  #2  
Old 01-28-2024, 01:55 PM
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firechickenman firechickenman is offline
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I get right at 3.015" on a 455 and IAIIA caps. 400 should be the same.

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  #3  
Old 01-28-2024, 03:44 PM
reacp911 reacp911 is offline
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Great! thanks

so the windage tray is 1.3 inches, and the pan is 4.5 so it leaves a clearance of 0.2 inches. I wonder how much of an impediment this is to oil returning to the pickup?

Last edited by reacp911; 01-28-2024 at 04:07 PM.
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