yes sir heads were on order. and they will come in the future. but i think a 6.0 or a 5.7 will make it in before the end of the year. then this cam will really come alive. im going to put her in. we will see what she does. sopund damn mean if anything.

 

So more overlap closer to Zero (or even positive overlap would work) for NA and less (toward negative) for Boost/nitrous is the ideal situation?

 

Yep.

And that throws that LSA guideline out the window.(114-119lsa)

Example.

220/220 on a 115lsa = -10* of overlap @ .05
214/214 on a 109lsa = -10* of overlap @ .05

See how duration has a significant role. If the lobe seperation has to be greater than 114, then small grinds like the 214/214 would give up alot of power. I'm not positive on what degree of overlap is necessary on a blower motor, but with these -10* @ .05 we're talking easily smoggable.

 

lsa will always play a role in a F/I cam. even though the valve overlap may be the right number for the cam you are looking for the amount of time when the valves are open at the same time is also critical. this cam has -2* overlap i think. but it is also a 114 lsa. you cannot go by just valve overlap. if that were true then they would be putting 110 and 112 lsa cams in F/I motors.

 

The lobe seperation angle varies the camshafts timing events and the total amount of overlap.

Look outside of lingenfelter. There are companies using tight lobe seperations on blower setups. Many of them.

Think about when someone makes the claim "all blowers need a camshaft with a 114-119lsa". You ask them why.....Then they say, "A 112lsa or lower will bleed off boost." I just proved this wrong with the comparison I did a few posts up! Overlap = duration vs. lsa

 

so what you are saying is if i get a cam with the right duration i can run a 110 lsa cam and a blower and it will work.

 

Blower Cams like 0 to neg overlap. To be able to run increased duration and maintain that overlap, a wider LSA is needed.