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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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1 or 2 piece rear main seal for 351W

  • Thread starter Thread starter Black1987Stang
  • Start date Start date Jan 11, 2009

Black1987Stang

Active Member
Aug 22, 2004
1,422
0
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Jersey Shore
Jan 11, 2009
#1
  • Jan 11, 2009
  • #1
What's the difference between a 351W block with a 1 piece and 2 piece rear main seal? The journal where the seal rides on the crank and the end main cap?

I'm getting a new one for my 1974 motor, it's new but it sat 8 years and don't want to have any problems so I want to replace it so I don't have any leaks. Summit only has one for the motor

Fel-Pro Performance Z2902 - Fel-Pro Performance Rear Main Bearing Seals - summitracing.com

Should I just get this one or look for a better material?
Anybody know if Advance or autozone has them?
They both have the 9333 PT-1 head gaskets for like $16 each, 10 bucks cheaper than Anywhere else I ever seen so I figured they might have these cheaper.
 

squeak93

15 Year Member
Jun 2, 2005
2,280
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164
Joplin, Missouri
Jan 12, 2009
#2
  • Jan 12, 2009
  • #2
a 74 will be a 2 piece unless u have had it machined into a one piece. The main diff is that u can't change the 2 piece with the motor in the car, u have to pull the block apart to get to it. One piece is way better, but I ran a 2 piece with no issues.
 
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