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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2017 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2017 Posts: 36 | Could oil, seeping/leak,be coming from head gasket? Don't think its coming from valve cover gasket.Thanks,Dennis
1955 1st. 235 P/U stock | | | | | Joined: Jun 2006 Posts: 693 'Bolter | | 'Bolter Joined: Jun 2006 Posts: 693 | if the engine runs OK (good compression) and there's no coolant in the oil or vice versa - its probably not your head gasket. i bet it is the valve cover gasket even if you don't think it is. those have a large sealing area and just four screws holding it on. | | | | | Joined: Jan 2017 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2017 Posts: 36 | Thanks,i agree. Same as carb.,not enough bolts.4 on carb also.Just wasn't sure what goes on between block=head,if it could leak. Oil is clear. Runs great.Will have to check compression..Thanks,Dennis | | | | | Joined: Jan 2017 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2017 Posts: 36 | Best place to buy good valve cover gasket? Sure you're right..Thanks,Dennis | | | | | Joined: Mar 2010 Posts: 10,308 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,308 | I have had a fresh rebuilt 235 leak oil between the head and the block. To fix it, I warmed it up fully, then re-torqued the head bolts with a newer torque wrench. I believe that I had used the old torque wrench for a breaker bar 18 or 19 too many times.  Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Feb 2004 Posts: 29,875 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,875 | The torque wrench I use doing warranty claim inspections gets calibrated once a year. It's surprising how many cars I find with loose lug nuts after tire changes, wheel balancing, etc. from places like Firestone, Goodyear, and a bunch of the other national franchise places, usually after a wheel parts company with the vehicle!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jul 2010 Posts: 592 Shop Shark | | Shop Shark Joined: Jul 2010 Posts: 592 | To Carl's point, many head gasket manufacturers recommend doing a re-torquing after the engine has warmed up when installing a new head gasket by backing off the head bolts by 1/4 turn one bolt at a time and re-torquing at the correct spec...90 foot pounds for a 235...using the normal head bolt tightening sequence. My guess is that many head gaskets get installed on a cold engine and never get this done.
Matt | | | | | Joined: Jan 2017 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2017 Posts: 36 | Thanks to all of you! Will give it a try!! | | | | | Joined: Jan 2017 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2017 Posts: 36 | I read after warmed up re-torque from Matt. But do you let get cool before re-torquing? Hope that makes sense..Not a new re-build 9,000 mi. since done. | | | | | Joined: Mar 2010 Posts: 10,308 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,308 | Torque the bolts with the engine at fully warmed up condition.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
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