Wrong Fel-pro one piece gasket? - Chevy Nova Forum
Visit our sponsor, National Nostalgic Nova
Steve's Nova Site is an automotive enthusiast website dedicated to the 1962 - 1979 Chevrolet Nova, Chevy II and Acadian automobiles. We work together to preserve, restore, drive, show, race and provide fellowship for these classic cars. This is one of the best places to find information about parts, rebuilding, restoration and racing. This website is not affiliated with GM, General Motors or Chevrolet in any capacity.

Go Back   Chevy Nova Forum > Body, Chassis and Mechanical > Drivetrain & Performance

StevesNovaSite.com is the premier Chevrolet Nova Forum on the internet. Registered Users do not see the above ads.
Thread Tools Display Modes
Old 25th-February-2009, 11:43 PM   #1
therooster's Avatar

Title: Nova Newbie
iTrader: (0)
Status: Offline
Join Date: Feb 2009
Location: santa barbara
Nova(s): 1964 Nova 400 series Coup
Posts: 8
Angry Wrong Fel-pro one piece gasket?

I just installed a new Fel-pro gasket part # OS-34509 T (thin seal) on my 69-79 350 4-bolt block. I got everything tightened up noticed that the front journal has a small gap. I heard the thick seal is for the newer 350's (OS-34510 T) but it seams like the thick one will make up that gap. The rear journal looks to be seated ok (kinda hard to see). Could it possibly be my front cover is from a newer 350? Are they different?
  Reply With Quote
Sponsored Links
Old 25th-February-2009, 11:51 PM   #2
The Big Al
The Big Al's Avatar

Title: Nova Guru
iTrader: (115)
Status: Offline
Join Date: Aug 2007
Location: Hickory, NC
Nova(s): 68ss, 70ss (SOLD)
Posts: 15,967
Best of Drivetrain & Performance


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

“The bitterness of poor quality & Service remains long after the sweetness of low price is forgotten”
  Reply With Quote
Old 26th-February-2009, 05:25 PM   #3

Title: Nova Junior Member
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: St Louis
Posts: 68
Just installed a new oil pan on my early 327 and what I found was that front seal thickness is dictated by the pan, not the timing chain cover. 55-74 sbc's used the thin seal (felpro 34509t) and 75-85 used the thick front seal (34510t). If you're not sure what you've got, lay a straight edge across the front oil pan rails and measure down to the pan seal lip. 2 1/4" uses a thin seal and 2 3/8 uses a thick seal. 86 & later use a thick front seal but require a 1pc rear main seal. FWIW, found the least expensive 34510t @ O'Rielly's; about $22 + tax.

Hope this helps.

70 Nova, 327, AFR, TRW, Perf RPM, Holley dp, Comp xs268s, DIY HEI & cowl air, headers, 4 spd, PowerTrax
  Reply With Quote
Old 9th-March-2009, 09:42 AM   #4
67-CII's Avatar

Title: Nova Junior Member
iTrader: (0)
Status: Offline
Join Date: Mar 2007
Location: NewCastle IN
Nova(s): 67 Hardtop on E85
Posts: 58
Been There Done That

Have a 74 3/4 Ton 350 4bolt but the guy who owned it before me replaced the oil pan with one from 75+ that requires a thick seal (OS34510).

Found this out the hardway!
I was replacing timing chain, water pumpt etc. but not the oil pan gasket since that had recently been done by previous owner so I never noticed the space in the front seal but was suprised at how easy I was able to work the seal in without droping the pan front. Drove truck around the block and she was bleedin like a stuck pig. Oil everywhere!

Live and learn!
  Reply With Quote
Sponsored Links

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
SBC intake manifold gasket restrictor in center chamber ChevyBelly Drivetrain & Performance 4 25th-February-2009 02:32 PM
Intake Manifold Gasket Installation - Help leejoy Drivetrain & Performance 2 29th-October-2007 12:33 PM
1965 Nova Rear Glass Install...Somethings Wrong!!! chevy65supernova Body and Interior 6 24th-September-2007 10:55 PM
Trimming oil pan gasket DriveWFO Drivetrain & Performance 7 3rd-August-2006 10:39 PM
1967 Windshield Gasket Frank B Body and Interior 8 17th-July-2006 08:49 PM

Site best viewed set to 1024 x 768.

All times are GMT -4. The time now is 11:33 PM.

Custom Designed for Steve's Nova Site by: vBSkinworks

Powered by vBulletin® Copyright ©2000 - 2017, Jelsoft Enterprises Lt
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.