JacobK

iTrader: (10)

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

iTrader: (10)

ttt...

gtovan

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.

gollum

iTrader: (1)

You must read this before ordering.
https://ls1tech.com/forums/generation-iii-internal-engine/481382-torque-coming-out-my-ears-cam-change.html

JacobK

iTrader: (10)

i dont wanna read trough 8 pages...if someone could just help me like gtovan did that would be best

gollum

iTrader: (1)

OK, I would go with this custom Comp grind cam insted

.224/228 @.050, 110LSA (+2), .568/.571 lift

gtovan

__________________

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.

cws T/A

iTrader: (3)

whos grinding it for you

JacobK

iTrader: (10)

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.

cws T/A

iTrader: (3)

go for it looks close to an g5x2

Asmodeus

I learned SO much from that thread. I have it bookmarked and go back and reread it like it was my favorite novel. It really helped when I just went and ordered my custom grind last week. I had similar goals in mind. It's worth the read.

KCS

iTrader: (20)

Quit being lazy! Why should anyone help you if your too lazy to read a few pages of notes. You have the information you need, just read it!