i am getting ready to buy a cam for my ls6 i am thinking about the tsp ms4 they sound great have any of you guys put one in if so what do you think

 

I have one in my 6.0. Cam-only it makes 420rwhp. Needless to say I love it.

 

what are you using for exhaust

 

Hawks/SSW longtubes with 3" collectors into a y pipe and a 3" bullet dumped before the axle.

 

Out of complete curiousity, nothing else, it would be cool to see that curve logged against AFR, my buddy has been contemplating that cam. I really thought the 6.0L would eek more power out with that. 420 ain't bad, if I remember from Power Tour correctly your running a T56, don't remeber the rear gear.

Also probably depend greatly on the dyno to, if it was an inertial dyno your numbers may be a little low.

I believe to make the best of this cam, decent pushrods and valve springs are in order and rocker arms would not hurt either. If removing the heads som exhaust short side porting would go along way towards 20 extra ponies.

 

Not my car, but local racer:

'98 TA, TH350, 9" rear, forget the stall and gears but I think 3000 and 4.56. LS6 intake, MS4, tune by TSP. Might have larger injectors, not sure about that. Long tube headers, 1-3/4" primaries, I think. Seats removed, 6-pt installed, race driver's seat (I think). Not sure of weight, I think around 3400 w/driver. Runs low-12's/high-11's, 115 mph at altitude; mid- to quarter 11's, 125 mph at sea level. The engine has never been out of the car, the heads never off of the engine. I think he said he shifts at 6k.

Totally impressive car.

 

Perhaps I should elaborate. I have an upgraded valvetrain with Scorpion rockers, PRC dual valve springs, and LS7 lifters. But when I say cam only, I mean it has GM heads and intake that are not ported, stock unported TB, etc. The rear end has 3.42's....for now.

The A/F was near perfect. It hung around 13.6-14 the whole run. The top line way up in outer space was a mis-read.