cam specs...
Thread Starter
Teching In
Joined: Aug 2005
Posts: 18
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From: Modesto
cam specs... i am going to be getting a cam soon..am going ot be going with a custom grind 224 236 on a 510 530 lift..but cant decide if i want to go 110 lsa or a 112...consedering my mods below what would be more suitable...some people sad go 112 b/c the nitrious and the juice likes the higher LSA..but not sure any fedabck??...
Thread Starter
Teching In
Joined: Aug 2005
Posts: 18
Likes: 0
From: Modesto
can anyone tel me more about this...what should i be goign with..i have heard u should go 112 but then otheres say not to...i dont want to have a nitrious specfif cam i want a cam thats good all around with/ or without spray
TECH Apprentice
Joined: May 2004
Posts: 387
Likes: 0
From: Cali
id go with the 110 over the 112, if you're only gonna spray from time to time, the 110 will serve you better for N/A purposes. and i highly doubt you'll loose power with the 110 + spray, i got the asa cam and that cam loves juice. . . 
LSA = Lobe Seperation Angle
As you have your your lobe sep gets wider, the more the valves stay open on the intake and the exhuast. YOu can have your given duration numbers but Lobe Sep will effect the cam over. I dont have long to explain becausw I am at work.
The way n20/turbo/blower motors work is on a principal of Volumetric Efficency. Which is filling the cylinder up. To create 1 pound off boost you need to over fill/over charge the cylinder. Which is 100+% VE.
The issue with Lobe Sep is that it will directly effect duration and if its too wide, then your intake charge blows out of the combustion chamber.
BUt you make much more power in the upper rpm with a lSA of 110 vs 114...... so its a trade off.
Basically LSA can determine your power band.
The same cam but different LSA- The lower the degree will push the powerband forward, you loose some torque for mid and upper rpm hp. Circle track cars who live in the higher rpms love it.
Gas and Emissions = FORGET ABOUT IT
As you have your your lobe sep gets wider, the more the valves stay open on the intake and the exhuast. YOu can have your given duration numbers but Lobe Sep will effect the cam over. I dont have long to explain becausw I am at work.
The way n20/turbo/blower motors work is on a principal of Volumetric Efficency. Which is filling the cylinder up. To create 1 pound off boost you need to over fill/over charge the cylinder. Which is 100+% VE.
The issue with Lobe Sep is that it will directly effect duration and if its too wide, then your intake charge blows out of the combustion chamber.
BUt you make much more power in the upper rpm with a lSA of 110 vs 114...... so its a trade off.
Basically LSA can determine your power band.
The same cam but different LSA- The lower the degree will push the powerband forward, you loose some torque for mid and upper rpm hp. Circle track cars who live in the higher rpms love it.
Gas and Emissions = FORGET ABOUT IT
