Operating Temp in 9 inch

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Jun 10, 2010 | 11:30 AM

LS1-IROC

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Operating Temp in 9 inch

Anybody know what the operating temp range should be for a Ford 9 inch? I just set up a ring and pinion (Motive) 4:11's with a Trac Loc posi. After long drives the diff temp will be around 175 degress measured with a non-contact thermometer in the center of the pumpkin. Seems a little hot to me..but it is a new gear set. I'm currently running 80/90 weight.

Jun 10, 2010 | 02:15 PM

jmm98LS1

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From: KS

For a new gear set & bearings that's about right. Once everything is broken in, I usually see 135-145*F after spirited driving measured with a laser thermo.

Jun 10, 2010 | 05:05 PM

redtail2426

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From: Rochester,Ny

well i just took my car out for about an hour,city/highway mix and some nice wot blasts,and the temp as soon as i pulled in was 145. I have about 200 miles on my midwest rear now using richmond 4.11's and aluminum center section.

Jun 10, 2010 | 09:39 PM

KBG

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From: Biloxi, MS

I wouldn't worry about it....my S60 got HOT after a short drive

Jun 11, 2010 | 05:27 PM

Dwn Cam

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From: Azusa, Ca

Does anybody make a diff cooler kit for the 9". I would love to get something like that for mine. I have seen one for the Ford 8.8 but not for the 9".

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