What makes a cam lumpy?

[VXSS]

Is it the LSA or duration?

 

[shifty6]

Tight (small) Lobe separation angle will make it sound lumpy.

 

[VXSS]

So what would a 113 be like?

 

[VR38]

Excess unburnt fuel (overlap) makes a cam lumpy on idle, tighter the LSA the tighter the lump will sound.

 

[ari666]

overlap .

 

[wildss]

So what would a 113 be like?

disapointing

 

[fdbag8]

I have a 113lsa cam in my l76 which has a nice choppy idle. As a daily it's plenty lumpy for me.

 

[ari666]

disapointing

i lol'ed. not gonna lie

 

[Cava454]

108 for me

 

[IBLOWN]

Like the boys said, its about overlap. Its calculated by exhaust & intake duration over LSA.

Heres a calculator: Camshaft Overlap Calculator - Wallace Racing