Ok so my setup is an 03 ecsb 5.3 227 cam 3400 Coan stall long tubes mild worked 241s the pin dropped in my 10 bolt broke all kinds of teeth an my spider gears are shot currently installed is 3.73 truck is dd but only till feb should I install 4.10 or just go with a 4.30 ? 30" tall tires

 

I would go with 4.30's. Call Ron 1-800-694-3098 @ rons machining service. He is agreat guy to chat with and his service is unreal. I ordered tuesday and my gears showed up wensday. RONS MACHINING SERVICE Home Page is there home page.

 

I hear he is the man ... Thank you for your input !

 

If you're not going to daily drive it any more 4.56s might serve you better at the track depending on your expected trap speeds. whatever lets you cross the finish line at the very top of 3rd gear is ideal if you can get traction on launch. There are a lot of tire size/gear/rpm/speed calculators on the net you can check with.