Re: The best Rear main Seal for a 440?
[Re: hudsonhornet7x]
#3148427
06/03/23 03:01 PM
06/03/23 03:01 PM
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Joined: Sep 2003
Posts: 19,406 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,406
north of coder
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My 470 is using the Fast Fish rear main seal. So far so good. what main seal retainer did you use, and how did you seal it to the block ? did you open the retainer bolt holes to allow the seal to find it's happy spot to seal ?
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Re: The best Rear main Seal for a 440?
[Re: an8sec70cuda]
#3149908
06/09/23 08:24 AM
06/09/23 08:24 AM
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Joined: Mar 2003
Posts: 2,505 PA
moparacer
master
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master
Joined: Mar 2003
Posts: 2,505
PA
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I always use normal Fel-Pro replacement rear main seal and the factory retainer. No issues. Same here. I have never had a rear main leak. Since I said that, mine will probably leak the first pass this weekend......
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: The best Rear main Seal for a 440?
[Re: moparacer]
#3149929
06/09/23 09:43 AM
06/09/23 09:43 AM
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Joined: Jan 2004
Posts: 8,270 fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,270
fredericksburg,va
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I always use normal Fel-Pro replacement rear main seal and the factory retainer. No issues. Same here. I have never had a rear main leak. Since I said that, mine will probably leak the first pass this weekend...... Same here, put it together than let it sit for a day to dry the sealers.
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Re: The best Rear main Seal for a 440?
[Re: moparacer]
#3149971
06/09/23 11:45 AM
06/09/23 11:45 AM
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Joined: Jan 2003
Posts: 19,363 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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I always use normal Fel-Pro replacement rear main seal and the factory retainer. No issues. Same here. I have never had a rear main leak. Since I said that, mine will probably leak the first pass this weekend...... I had not either until recently. I had purchased 6 or 7 rear main seals during covid as I had three engines going together and always something in the works. Well my 64 had a small leak from the rear main, not a huge deal but I HATE leaks. I did not build the engine in the car originally. So I pulled it apart to look it over and fix the leak. Going back together I used one of the seals I bought in 2020. Put it back together as I always do nothing different. It went from a small leak to a gusher!!! Driving it around the block I saw it loose all pan vacuum and by the time I hit my driveway I was leaving a trail. The seal I pulled out of it was the same color and likely brand as I used. So I ordered a new seal from another manufacturer and no issues. So looks like I will throw away the remaining seals from 2020 as that is the secind one that leaked. My Predator had a small leak as well after being on the dyno and a few passes on it.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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