newschool72

iTrader: (12)

Thought id post up my times from a resent trip to the track with my crate LS3 equipped 72 Camaro. The heads have never been off and the only mods are a tiny cam that me and a non sponsor grinder came up with , a GMPP dual plane carb intake w Fast EZ EFI, and a set of 1 7/8" long tubes.
I built the car to be a nice cruiser with great street manners with an eye more towards turning corners than straight line performance. The drive train is a 2004R with a 2800 rpm lock up converter, 3.42 rear, 25.7" Nitto tire. It has AC, PS, and the engine pulls enough vacuum for my big 13" 4 wheel power disc brakes. This combo cruises effortlessly at 1750rpms with the converter locked at 55mph uphill with no lugging at all. Just a very mild, and easily drive able street combo. It weighs in at 3485 with me in it.
Car went 11.777 at 117 on my first pass on a badly ,busted traction 1.959 60 ft. The Hotchkis TVS suspension hates drag strips, LOL. I went back around for another try and this time I put some more heat in the Nittos. I still blew the tires off, but feathered it to a 1.876 60 ft and 11.65 at 118.22 MPH. You just gotta love those LS3 heads with the right camshaft ! Its crazy for me to understand how an engine that can cruise, smooth as silk at less than 2000rpms can still buzz to 7000rpms without any noticeable drop off ! I come from a SBC back ground and am just amazed that these engines can pull that off !
I posted the time slips and 2 vids over on the "carbed LSX" forum, if anyone wants to see.

newschool72

iTrader: (12)

Im rolling a few ideas around to make it possible to slap a set of 15" wheels w a good tire to see what it really is capable of. The 13" disc on the back are holding me back on tire right now. I figure very low 11s, maybe a 10.9x with a solid 60ft. The engine makes a ton of torque off idle, so I think it would 60ft really well with a tire. On the 11.65 run, I was at part throttle a good second or so, and still spinning.

Bill00Formula

iTrader: (4)

Congrats! Not too shabby.

Dyno Junkie

i suggest you try either M&H or M/T drag radials.
Our LS3 powered Monaro has managed as low as 1.52 sixty foot times on 265/40/18's.

newschool72

iTrader: (12)

Thanks man! It is as close to having your cake and eating it too, that Ive seen without forced induction of some kind. Glass smooth low rpm cruising and enough beans to keep about anything the big 3 are making, in the rear view. Cam only has 220* of intake duration at .050 and no wind up or waiting for the power to come in. Its always right there, right now from idle to 7K !

newschool72

iTrader: (12)

Ive always had great luck with the MTs. I picked these Nitto NTO5Rs used so I could go to the strip to set the base timing on the MSD6012 box. I honestly didn't expect the car to run as hard as it does. I expected to break into the 11s if it hooked. Not to go 11.65 blowing the tires off !
It hooked OK with the stock 2100rpm GN stall I had in it before, but at that time I was working through the bugs in the car. When I tore the stock converter up, I had a stall built at 2800, and now that extra 700rpms of stall has pushed me too high into the power band for the road racing suspension setup, to hook on the Nittos.