If this dont fix it, though its a brand new stamped steel pan, I will buy a new pan or even a cast aluminum pan if needed. put an 1/8" thick layer on both sides of the gasket at the timing cover area and reinstalled the pan.will let it sit overnight and try it tomorrow. So I bought a new Felpro 1 piece gasket and a tube of Permatex gasket maker. Pulled a new one at the parts house and the thick one is WAY to thick to fit. Pulled the pan down and it has the thin type Felpro 1 piece blue neoprene gasket. I could actually move the gasket around by pushing on it. Went out this morning to change the front crank seal and noticed the leak was actually at the front of the pan/timing cover area. thanks for the tip on the gap between pan and cover.im headed out to check this right now. I finally found a Timkin seal and will get it changed out in the morning.if this dont stop it I will go ahead and replace the pan gasket with new one.still relearning the SBC.spent a lifetime with Fords and Mopars with just a scant few Chevies mixed in, so didnt realize there were many changes throughout the years.makes it a little confusing.thanks for the help guys. I looked it over very close and there was no oil on the mating surfaces of this gasket and the area that seals the bottom of the timing cover looks to be compressed enough to seal so Im thinking it could be coming from the front crank seal. Thanks Dave.I have a bit of an oil leak that I thought was coming from the rear main seal, but yesterday I went underneath to look closer and it looks like its actually coming from the front of the motor.not a bad leak but enough that I want to correct it.pulled the pan down and it has one of the blue rubber neoprene one piece gaskets. PN1886 1986-97 thick front seal, one 1pc rear main seal GM bowtie short deck block PN1882 Thick front seal straight side rails side rails trimmed for strokers PN1885 1957-74 thin front seal LH dipstick PN1880 1975-79 thick front seal LH dipstick side rails trimmed for strokers PN1881 1980-85 thick front seal RH dipstick side rails trimmed for strokers Aftermarket and factory timing covers can vary, so it is best to measure your timing cover width before buying a replacement oil pan gasket.įelPro One Piece Oil Pan Gasket Part Numbers Notice the difference between this photo and photo C, the oil pan will now bolt-on and properly seal. You can see how the front seal fits down inside the timing cover grove perfectly. In this photo we installed Fel-pro’s premium three-piece gasket that is intended for a thin-style timing cover. Trying to bolt the oil pan on could damage the gasket and cause leaks. If you look closely, the gasket is too thick to fit down inside the timing cover groove, which won’t allow the oil pan to bolt up. In this photo we installed a one-piece gasket similar to Superseal’s 910-10223, which is intended for a thick-style timing cover. Notice the width of the groove where the oil pan gasket should seat inside of. In this photo we installed Speedway’s billet timing cover onto a small block Chevy 350, which is intended for a thin-style oil pan gasket. The images on the right compare the problem found between a thick and thin gasket. Fel-pro specifies a thick gasket at 3/8-inch, and a thin gasket at 1/4-inch. Some timing covers (like Speedway's 910-11040) have a thin grove, and others are thick. On a small block Chevy engine, some oil pan gaskets are a bit thicker than others (about 1/8-inch) and this can cause a problem where the gasket seals inside the timing cover grove. Ever ran into the headache of an oil pan gasket that doesn’t quite fit your timing cover? Well, like every problem, we have a solution or a tip rather, that will save you the extra run to the parts house.
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