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Alan Nyhus · 04-23-2024, 03:06 PM

While the #401 heads are notorious for poor oil drain back, the haze from the lifter valley area (coming up from the crank case) doesn't fit with that either.

Tough to diagnose stuff like this long distance. If the leakage numbers are in fact fine, the dyno is where you'll find the answers.

04-23-2024, 03:06 PM	#5
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,180 Likes: 1,074 Liked 799 Times in 236 Posts	Re: 402 stocker engine While the #401 heads are notorious for poor oil drain back, the haze from the lifter valley area (coming up from the crank case) doesn't fit with that either. Tough to diagnose stuff like this long distance. If the leakage numbers are in fact fine, the dyno is where you'll find the answers. __________________ "That'll never work....."