Originally Posted by josh green
yep you will probably have to have a retune just from changing the tranny. I know before spoolin had the gsr/ls hybrid he had an ls tranny that they tuned the car with. He slapped that tranny in and lost 20whp just b/c 4th was so much shorter. Made 404whp at MS and then at nopi it made 380.






btw daniel...have mike spray nitrous into your intercooler