The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-01-2005, 09:20 PM   #1
z7199
Registered User
 
z7199's Avatar
 
Join Date: Apr 2005
Location: Houston TX
Posts: 76
Got Leak?

Well not to long ago I posted that I had just put in my freshly rebuilt 402 well when I nput in the rear main seal I noticed how crappy of a design it was...... well it is leaking now and I was wondering has anybody else had this problem and if so how did you fix it?
__________________
99 nbs 5.3L x-cab Hypertech programmer
True dual 1 chamber flowmasters
magnaflow x-pipe 3" PA body lift
315/75/16 BFG All Terrian 15.3 @ 89mph

72' C20 402ci sc,lb in bed tool box, and new paint

http://www.cardomain.com/memberpage/456511/1
z7199 is offline   Reply With Quote
Old 08-03-2005, 11:51 PM   #2
z7199
Registered User
 
z7199's Avatar
 
Join Date: Apr 2005
Location: Houston TX
Posts: 76
Ttt
__________________
99 nbs 5.3L x-cab Hypertech programmer
True dual 1 chamber flowmasters
magnaflow x-pipe 3" PA body lift
315/75/16 BFG All Terrian 15.3 @ 89mph

72' C20 402ci sc,lb in bed tool box, and new paint

http://www.cardomain.com/memberpage/456511/1
z7199 is offline   Reply With Quote
Old 08-04-2005, 01:17 AM   #3
jhow66
Registered User
 
jhow66's Avatar
 
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
Just built a + .030 402 without in leaks (so far). Used the regular seal. Did you put any sealer on the main cap at the rear?
__________________
56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
jhow66 is offline   Reply With Quote
Old 08-04-2005, 05:13 PM   #4
z7199
Registered User
 
z7199's Avatar
 
Join Date: Apr 2005
Location: Houston TX
Posts: 76
Yes but it still leaks
__________________
99 nbs 5.3L x-cab Hypertech programmer
True dual 1 chamber flowmasters
magnaflow x-pipe 3" PA body lift
315/75/16 BFG All Terrian 15.3 @ 89mph

72' C20 402ci sc,lb in bed tool box, and new paint

http://www.cardomain.com/memberpage/456511/1
z7199 is offline   Reply With Quote
Old 08-04-2005, 06:50 PM   #5
jhow66
Registered User
 
jhow66's Avatar
 
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
Seal not backwards?
__________________
56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
jhow66 is offline   Reply With Quote
Old 08-04-2005, 07:00 PM   #6
AesC10s
Chevy truck addict
 
AesC10s's Avatar
 
Join Date: Apr 2005
Location: Thornton Colorado
Posts: 825
Id say you have to pull the rear main and put a new one in.
AesC10s is offline   Reply With Quote
Old 08-04-2005, 09:34 PM   #7
z7199
Registered User
 
z7199's Avatar
 
Join Date: Apr 2005
Location: Houston TX
Posts: 76
Quote:
Originally Posted by jhow66
Seal not backwards?
Nope its in there right

Quote:
Originally Posted by AesC10s
Id say you have to pull the rear main and put a new one in.
Yeah I think when I pull the tranny, which is soon very soon. But do ya'll have anymore tips on how to get in and have it not leak?
__________________
99 nbs 5.3L x-cab Hypertech programmer
True dual 1 chamber flowmasters
magnaflow x-pipe 3" PA body lift
315/75/16 BFG All Terrian 15.3 @ 89mph

72' C20 402ci sc,lb in bed tool box, and new paint

http://www.cardomain.com/memberpage/456511/1
z7199 is offline   Reply With Quote
Old 08-04-2005, 09:43 PM   #8
jhow66
Registered User
 
jhow66's Avatar
 
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
Are you sure it is the rear main? Could be rear cam plug or back of intake or one of the rear plugs for lifter oil passges. When you have trans out check all these first.
__________________
56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
jhow66 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:18 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com