I built my share of 383s and 440s, I've always had the rear main leak a bit, which drives me crazy. On my current 440 in my roadrunner, I used a billet aluminum retainer, and after several start ups, and some run time, it's as dry as a bone, no leaks, no drips...nothing. I'll never use a OEM retainer again...just my experience.


1969 A12 Roadrunner
1970 Plymouth Cuda
1968 Dodge Dart