cdoggy81

iTrader: (6)

Hi guys, quick question...
Finishing up my LS3 build & deciding between 2 cams. One is off the shelf & the other is custom ground but almost identical. If in real world street driving & a twice a year drag strip pass (read NOT a max effort dyno queen!) I won't be able to tell a difference between the 2 cams I am just going with the off the shelf cam to save time & $$.

Cam 1 = 225/238 .612/.585 113+3 (OL 5.5*) off the shelf cam
Cam 2 = 226/240 .620/.590 114+4 (OL 5*) custom cam

Goal is nice broad power under the curve, nice lope but nothing to shake your teeth loose. Good street manners, vacuum to run brakes & not a lot of exhaust fumes (no cats).The car is 2nd gen fbody swap, ~3700 lbs, 4l65e, vigilante 3200, 3.42 posi, 1 7/8" long tubes, 2.5" exhaust, x pipe, CAI, stock intake with stock LS3 heads milled to ~ 11:1+ CR.
My guess is the off the shelf cam 1 will be just fine for what I want to do & I really wont be able to tell the difference between them or give up any noticeable power between them but I wanted to confirm with some of the seasoned builders here. Thanks & LMK

G Atsma

I would say for YOUR intents and purposes, the off-the-shelf cam should do you fine. the differences are so small to my mind that on the street you won't know the difference.

cdoggy81

iTrader: (6)

Yep, pretty much what I was think too.
Thanks

tech@WS6store

iTrader: (2)

Youre gonna get an exhaust smell with nearly any overlap as well as any smaller negative overlap up to roughly 3 or so. Less timing at idle down low and cruise helps but then acts like a turd. Id go a bit smaller honestly. Keep the 113 lsa but run a 224/228 or 224/232 max. Itll still do what you want as far as power but drive a bit easier and have less fumes and tuning work arounds.

NAVYBLUE210

Of the 4 Cams mentioned in this thread, The 224/232 will be the best for
Your stated goals.

KW Baraka

iTrader: (7)

.....unless your ECM is properly tuned.

KW

cdoggy81

iTrader: (6)

10-4, thanks guys

tech@WS6store

iTrader: (2)

A tune still wont change what overlap does esp with no cats no matter how much you chase it with timing.

KW Baraka

iTrader: (7)

AI don't care how little overlap you have (or don't have).....no cats means fumes.

And less overlap gonna mean less power at the top of the RPM range.

He can go smaller than the cams he looked at, but at 11:1 static compression, the OP's proposed cams are more optimal than the smaller cams for power and for racing.....while still being relatively mild and VERY streetable for daily driving.

KW