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09-24-2018, 08:47 AM
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#1 |
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Registered User
Join Date: Dec 2010
Location: Sherwood, Arkansas
Posts: 156
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1987 5.7 FI rear main seal replacement question
Can the rear main seal on my 1987 GMC Sierra Classic be replaced without dropping the tranny and going through the oil pan and dropping my rear main bearing cap? Is it a two price or a one piece? If it's a one piece then this obviously isn't an option. Also, does anyone know if an upgraded seal has been made to correct tr leakage issue or was it simply a bad design?
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09-24-2018, 10:43 AM
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#2 |
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Registered User
Join Date: Dec 2013
Location: Columbus, Oh
Posts: 367
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Re: 1987 5.7 FI rear main seal replacement question
1986 and up motors are one piece rear main seals. Use a Fel Pro performance rear main seal for good quality.
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09-24-2018, 10:44 AM
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#3 |
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Registered User
Join Date: Dec 2013
Location: Columbus, Oh
Posts: 367
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Re: 1987 5.7 FI rear main seal replacement question
What do you mean by "tr leakage issue"?
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09-24-2018, 03:07 PM
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#4 | |
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Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,525
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Re: 1987 5.7 FI rear main seal replacement question
Quote:
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09-25-2018, 03:36 PM
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#5 |
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Registered User
Join Date: Dec 2013
Location: Columbus, Oh
Posts: 367
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Re: 1987 5.7 FI rear main seal replacement question
A motor with a one piece rear main seal will have to have the transmission removed to replace the seal.
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