My LS1 Build.....

[WS6]

3500 stall on a protouring car is nuts. Your back end will come around on you going around a corner if your rpms dip below 3500 and you end up flashing the convetor coming out of a corner. Happened to my friends 00Z on road ATL. Sent him into the dirt.

I think the 224/228 combo would be better. I did recently install a 228/228 cam from TSP in a 98 SS with an auto and 3200 stall.He had the stock 3.23 gears though. Had excellent power with only a little lowend loss. Had a good sound for an LS engine. I do not recommend going for sound on an LS especially an auto. The tight LSA cams are a pain to tune for the street with the auto. It can be done and Livernoise should be able to handle it if they spec something like that. If you notice a lot of companies have two cams that are the same except for LSA. The auto cams are usually +2 over the manual cams simply for drivability and tuning ease.

As for your combo in general, do not skimp on the heads. I think for a budget build the ported LS6 heads and 5.3 heads are great, but the AFR, RHS, and ET heads are better and would suit you better for a pro-touring car. The runner volume on all the ported GM heads is 230+cc in order to flow those numbers. The new casting heads are 205-215cc. They should produce a lot more midrange and low end torque due to the higher velocity the air will have. Keep the cam below 230 on the intake and duration with the LSA at 112-114. This will produce at least 400hp and 385ftlbs at the wheels through the auto but more importantly, the power will be broad and the torque will be strong throughout. 2600-2800 stall with those gears will do great on the street. Mind you it will not be optimal for drag racing as you'd want a higher stall, but this isn't a drag car your building.

Also never listen to a drag racer tell you what specs to use on a road course/ pro-touring car. I want to slap the people that say torque doesn't matter and ,yes, I have heard that said all too often.



Good luck and if you go to Livernoise for everything you should be pleased as they have a reputation for doing really good work. Let them know this isn't a drag car and what your intended purpose with the car is and they will put together something that will meet your requirements.