spross86
Member
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- Jan 6, 2015
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- 197
Is there a difference in 3.8 covers
109 block or are they all the same?
Thanks for any info
109 block or are they all the same?
Thanks for any info
Timing front cover identification
- Thread starter spross86
- Start date
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No, there are 3 different ones that will work on our cars. They all have a removable timing tab.
The early 14 bolt covers are flat nosed on the pan gasket surface and have (2) 5/16" holes in it that matches the 12 pan bolts. The later castings have a pointed nose with (3) 1/4" threaded holes arranged in a triangle that do not match the pan bolts.
The even later GM replacement units when they were available were pointed and double drilled with both patterns. You can also drill a 14 bolt pattern on a 20 bolt cover IF YOU'RE GOOD with a drill motor.
All of those would have a crank seal that installs from the rear.
If the seal goes in from the front it's a non GM Chinese part.
The early 14 bolt covers are flat nosed on the pan gasket surface and have (2) 5/16" holes in it that matches the 12 pan bolts. The later castings have a pointed nose with (3) 1/4" threaded holes arranged in a triangle that do not match the pan bolts.
The even later GM replacement units when they were available were pointed and double drilled with both patterns. You can also drill a 14 bolt pattern on a 20 bolt cover IF YOU'RE GOOD with a drill motor.
All of those would have a crank seal that installs from the rear.
If the seal goes in from the front it's a non GM Chinese part.
