Does this sound right?

[White95]

so will a cam similar to Viper's affect normal drive ablity?

[Turbo V6 Camaro]

Originally posted by oil pan 4:
The ICL is the point where the lobe is it's highest point.
Don't forget about ECL (exhasut center line), because ICL is only half of the problem. Each lobe has a center line.
A change in ICL & ECL will change your LSA.
LSA is soly dependent on ICL & ECL. LSA is a product of an equation from the ECL and ICL it is:
(ICL + ECL)2/ = LSA
Like with a DOCH engine with there 1 cam for intake and one cam for exhaust, there cams dont have LSA becasue they set it with the timeing belt. They can independently/manualy set the ICL and ECL so that the "peak valve open" can be where ever they want it and they can have how ever much over lap they want.
ICL, ECL, LSA, lifter lift (the @.050 you see) and duration determin how much valve over lap your engine will have.
The only way to reset the LSA on one of out cams is to have it reground.
With a real mild street engine you won't have much over lap if any.
With a strong N/A moter you will have to run a lot of over lap to make power, you will also have to run higher C/R so you can scavigen the cylinder better (also fights detonation) and idel at lower rpms, that is why higher C/R "tames" a big nasty cam. You will also run higher idel vaccume with a higher C/R.
With a mild to moderate turbo you will want little or no over lap because back pressure will blow exhaust into the chamber and contaminate you intake charge (causing detonation).
For a high power turbo you will want over lap, the car will be set up all wrong when it runs at low rpms (big cam, low cr, intake valve that opens after TDC closes at like 45*+ ABDC) but when the boost comes on at higher rpms your gone.
I could know a lot more about the relation ship between cam (and its timing),A/F, C/R, intakes, the difference in Al and cast iron heads, porting, ignition timing curves and boost from a turbo (with or with out or just nitrous and no turbo). I could even go on with torque converters and rear gears and exhaust.
I don't feel like typing any more and think I killed the explain ICL question several times over.

ummholly **** X does = 5 [img]tongue.gif[/img]

thanks i get it now, here is the grind sheet with my cam: http://memimage.cardomain.net/member...174_2_full.jpg

now i'm confused if i put the cam in destop dyno 2000 using th vavle timing i get 224/243 on my duration, now if i use the druation it changes my vuale timing, every i talked to is stupmed, did they mess up the cam? or the sheet?

im planing on running like 15psi of boost or more

[Turbo V6 Camaro]

Originally posted by White95:
so will a cam similar to Viper's affect normal drive ablity?

wit ht h 3.8 my PCM is prgrammed for it and its not bad all on the street only stalled like 2 times in 500 miles (this i with out the turbo and and running extreamly rich)