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Re: Oil pan for 540 incher
[Re: hemienvy]
#2793966
07/07/20 04:03 PM
07/07/20 04:03 PM
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Joined: Jan 2003
Posts: 18,025 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,025
S.E. Michigan
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Usually a 540 is a 4.5 bore with a 4.25 stroke.
OK, I am thinking maybe you were going to do a 4 and 3/8 bore with 4.5 stroke for 541 CI.
If you're serious about 5500rpm, I doubt you will notice any problems. I would consider a windage tray + possibly overfilling it by an arbitrary amount you have to take an educated guess on.
One thing I've done to research what might possibly work is, I compared the liquid level in the pan VS connecting rod "stick out" to make sure that, at least in a static environment the two aren't getting into each other too badly. the further apart the better but street engines are a compromise. Have also compared that to what are known good combinations that I have used in the past, hopefully arriving at something workable. If you check my 572 build/ugly pictures long thread you'll see markings on the side of the style of pan you're considering + the stick out measurement. In the end I decided I'd feel better with a slightly deeper pan because of stick out.
They're built with street type oiling systems all the time. They do seem to drop a tiny bit of oil pressure at higher rpm when street type pans and oiling systems are used, both hemi and wedge, with that stroke. We're only talking a couple psi but nobody likes to see that. The ways around that are those used by race cars for many years that we're all familiar with.
Good luck
Rich H.
Esse Quam Videri
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Re: Oil pan for 540 incher
[Re: hemienvy]
#2794334
07/08/20 01:18 PM
07/08/20 01:18 PM
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Joined: Jan 2003
Posts: 14,531 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,531
So. Burlington, Vt.
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One of the better running FAST builds was using a 4.5 crank. Scraper, windage tray, Hemi style pan....... running 7k....... no issues.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Oil pan for 540 incher
[Re: fast68plymouth]
#2794546
07/09/20 01:38 AM
07/09/20 01:38 AM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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I used the stock 1970/1971 6 quart hemi and 440 6 pack oil pan on my old 518 C.I. (4.300 stroke with BB Chevy type H beam rods) pump gas Duster with 6 quarts in the pan plus another quart for the standard Mopar size oil filter. I shifted it at or above 7000 RPM on every run, no problem with it oiling with a lot of runs (1000+) at the track and over 3000 street miles on it also It would loose oil pressure after letting off in the 1/4 mile at 134. MPH if it got down a quart of oil in the pan, it wouldn't do that when it was above the add line by 1/2 quart. I used a stock Mopar windage tray and my home made crankshaft scraper with .060 to .030 clearances to the rotating parts
Last edited by Cab_Burge; 07/09/20 01:40 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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