No, i havnt done mine yet....ive been putting it off for some reason...i think either this week or next weekend ill get around to do.

I didnt get a cam card either.

 

Whats a cam card?

 

A card that is sold with the cam that shows all the specs of that particular cam.

 

Thanks.

 

Cam card for GT2-3 cam is available online on the product instructions page at lingenfelter.com.

 

GT2-3 Camshaft Specifications
Camshaft: GT2-3
Engine type: GM Gen III & Gen IV V8 including LS1, LS6, LS2, LQ4, LQ9
Follower type: Hydraulic roller
Intake
Exhaust
Lobe lift:
0.336”
0.340”
Rocker ratio:
1.7:1
1.7:1
Valve lift
0.571”
0.578”
Duration at 0.050:
207°
220°
Advertised (total) duration:"
255°
281°
Lobe separation angle:
118.5
Centerline:
118.5
Recommended advance/retard:
0
Recommended valve springs:
Installed height:
Seat pressure:
Open pressure:


So how do I figure out overlap?

 

I found this on tech.

duration + duration /4 - LSA *2

soo....
205 + 220/4 :106.25-118.5: -12.25 * 2 = -24.5 degrees

ooohhh found this one. This will do it.

https://ls1tech.com/forums/showthrea...light=formulas

and that one shows -23.5, close enough to get your anwer.

 

Well thats about the exact opposite of my current +52* overlap cam. I guess thats why it's such a good blower cam. I wish I had time to install it...

 

Everyone says this is such a good street cam. It almost sounds too good to be true. Hopefully someone can correct me.

I am wondering if you lose a little bit of power with it in non-boost situations. Like just cruising around below -3" Hg. Reason I am thinking this is now you lose cylinder effeicency because the overlap is completely gone. Once into boost however, I can see the lack in overlap being a very good thing.

I am no expert on cams, and untill a few posts ago didn't really think much about them. Is there something I am not thinking about and should just put it in and shut up?

Thanks.

 

I've driven a few trucks with that cam. Driving around normally you really can't tell the difference. Under heavy throttle there is just more power everywhere. The downside to it is that it idles smoother than stock.