Ordering custom cam..need help quickly
#1
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Ordering custom cam..need help quickly
Hey guys i decided im going to be ordering a custom ground 231/237 .595/.605 on a 112 LSA. My question is do i have to get some advance ground into the cam? I see all these cars with like 112+4 or whatever. What exactyly does that do and do i need to get it ground into my cam? thanks alot
JacobK
JacobK
#3
The LSA is degrees of separation between the exhaust and intake lobes, the +4 or +2 you see on cam specs in the degrees the intake lobe is advanced. So 112 LSA +4 means the intake lobe is centered on 108 which will give you an intake valve closure 4 degrees sooner than if the cam was ordered w/o advance. The earlier closure will aid in adding low and mid range torque because it will raise your dynamic compression ratio and drop your peak hp rpm a little.
#7
Originally Posted by JacobK
Hey guys i decided im going to be ordering a custom ground 231/237 .595/.605 on a 112 LSA. My question is do i have to get some advance ground into the cam? I see all these cars with like 112+4 or whatever. What exactyly does that do and do i need to get it ground into my cam? thanks alot
JacobK
JacobK
If you are dead set on this cam and a 112 LSA, then I would order it +3 or +4 and take advantage of the mid range torque. Even with the +4, your intake valve will close late enough to allow you to carry power 6500rpm or so.
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see the thing is i dont wanna spin it up super super high, since i have like 120K on my motor, but i do wanna spin it up somewhat. Im getting it ground by borowski race engines here in Illinois.
#11
Originally Posted by gollum
You must read this before ordering.
https://ls1tech.com/forums/showthread.php?t=481382
https://ls1tech.com/forums/showthread.php?t=481382