donbayers

Hello all;

Finally got some paperwork from the lady I bought my car from a year ago.

In the stack of stuff was a rebuild sheet from S&K Engine Specialists of Topeka KS

It shows that in 1989 my Original LS-5 was rebuilt by a Don Crockett and that he used the following cam. 30005.


http://schneidercams.com/LSP5Hbbchydraulic.aspx

Can anyone comment regarding how this cam differs from the OEM ???

Particular interested if this can does not make a good idle because my engine idles rough and I've not been able to fix this.

Thanks

MelWff

that cam has about 6 degrees more exhaust duration than an LS5, intake is the same but the lobe separation angle is less 112 versus 115 which will effect idle, see below. You could have other causes for the rough idle.
http://www.compcams.com/Pages/413/ca...ion-angle.aspx

donbayers

Thanks,

I've done everything on the outside of the engine you can do. this certainly could be my inexperience as well. But others have listened to the engine and think it's a miss not a lope.

At any rate it's helpful to know what cam is in there. maybe I'll think about what it would take and all involved to put a stock cam back in???

MelWff

have you tried the pull one plug wire at a time out of the cap to see which one has no effect? I don't think it is worth the effort of changing the cam, do you know your vacuum reading at idle?