what would be recommended for a STS kit on a TBSS with a 3600 stall?

 

im running an 02+ LS6 cam and gained 50 hp. with the turbo. Pulls alot harder above 4k

 

Had one in mine when I was running the STS.....seemed to like it alot.....
However it likes the TVS more

 

On a 6.0 I personally wouldn't go too big with a cam. Something in the teens for duration. Bigger is not necessarily better. I'm happier with my 220/222 in my 408 than I was with a 235/239.

 

The guy that built my 408 put in a 224/231 .595 on 114 LSA. It has a 8.7 cr and will be using a STS with a GTS 76.

What is a reverse split?

 

224/231 = forward split ( favors exhaust flow over intake)

231/224 = reverse split ( favors intake flow over exhaust)

 

Cam selection goes around the setup. 6.0 with STS is definitely not enough info.

Things that have to be known is ,rest of the exhaust,cats,stall converter,gears and tires used ect.

 

Don, he doesnt even have this set up anymore. Thread just got brought back up.

 

Didn't even notice that but that's ok I still learned something.

Don't turbo's need more exhaust flow to spool?

Here is my setup:

408 w/8.7 cr
p&p 6.0 heads
stock truck intake
STS Turbo w/GTS 76
224/231 .595 on 114 LSA
3.73 gears
MT 28/11.5/16 tires
2800 stall
stock exhaust because of STS
will be removing cats

 

I am no cam expert, but with a turbo being the largest restriction in most turbo exhaust systems the benefits of a forward split are lost. A forward split uses the longer exhaust valve duration to scavenge the cylinder and draw in the initial intake charge. With a turbo back pressure is created in the exhaust which in turn will keep the initial intake charge from entering the cylinder. Just the opposite of scavenging the cylinder. Therefore the idea is to get the exhaust valve closed at just the correct time to prevent any back pressure in the cylinder while allowing all the spent combustion gases to be vented from the cylinder. The scavenging is not as important with the turbo because the intake air is under pressure. A supercharger on the other hand, can have a more open and efficient exhaust system and may benefit from the longer exhaust valve duration to ensure all the old combustion gases are removed and to aid in the initial intake charge filling the cylinder.
Spooling of the turbo is probably more effected by the initial rush of exhaust out of the cylinder than by a little longer but much smaller push at the end of the exhaust stroke. Maybe a cam with a higher exhaust lift and a faster ramp rate will have a larger effect on spooling the turbo faster but these things will also increase wear and tear on the valve train and a shorter life span and higher maintenance will be the cost.