Originally Posted by tommyboy86

Hi Martin. I just put in my order for btr 660 platinum springs today. I'm running a forged 370, l92 heads, 8.7-1 cr, twin turbonetics 6665 chargers, just need to order a few other gaskets and i should be set. I'm running the stock ls3 rockers and bridges. I'm looking for 900-1000 whp through a 4l80e in a silverado with 35's I have a 3,500rpm stall converter. I'm looking to shift in the 7,000-7,200 range. the cam and some gaskets are all i'm lacking. lmk what you have in mind. Shoot me a grind and a price thanks Dan