400jr

[ole39]

was just looking thru you tube and came across a vidio of vern tardel adjusting the lifters on a 400jr. he does .012 in, and .014 ex. i thought it was .018 and .018. thats what i set mine at. any major performance issues between the 2 settings?

[Pete]

Originally Posted by ole39

was just looking thru you tube and came across a vidio of vern tardel adjusting the lifters on a 400jr. he does .012 in, and .014 ex. i thought it was .018 and .018. thats what i set mine at. any major performance issues between the 2 settings?

The wider settings may help the low end performance.
Your results may vary.

[36tbird]

Pete, doesn't that make them a bit noisier, too? Mine set at .012 and .014 are a little noisy when cold.

[42merc]

I saw the same video, & I think Vern set them at .014 & .014. I Emailed him & his response was, " that it quiets them down somewhat ". I reset mine to .014 & they are quieter. Setting the valves tighter usually moves shifts the power band higher, but I'm not noticing any difference.

[Pete]

Originally Posted by 36tbird

Pete, doesn't that make them a bit noisier, too? Mine set at .012 and .014 are a little noisy when cold.

Yes.

[296 V8]

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Be sure and check it with a degree wheel …… the last two we checked were way off and got returned

[Ol' Ron]

I like the 400jr as a race cam for short tracks, but they;re hard on the valve train and require some hefty spring pressure. One reason I changed to the L-100, sounds good runs great and #50 lbs will get you 5K. But if I was racing, that's another story.