Originally Posted by soundfx007

balance shafts have nothing to do with balancing the motor. These motors have a natural wobble to them. if you dont put balance shafts in it will vibrate like your girlfriends favorite toy. If you do you risk the chance of the balance shafts tearing up and tearing up the motor in the process (those shafts spin 2x the motor). EVERY race shop says take them out except JAM. Every race shop will say they have never seen a motor break from vibration but have seen many break from balance shaft failure. JAM, on the otherhand, will tell you the opposite. I have a JAM 2.3 in my car. Motor is awsome, their work is awsome, but i dont like them. Its their way or no way. Tim at AMS is easier to deal with, buy your engine from them.

My advice is put a 2.3, gt35r with a .63 AR. My car hits like a mack truck slamed into my rear. Its a 10 sec car on pump and meth and traps over 130mph. Its violent, and thats the only word i can use to describe it. Ive had the car for 1.5 years, put 7000 miles on it and made 100 drag passes. Car has been very reliable. Get a good tuner and it will drive better than stock. OR, and this is probly the best advice, buy a car thats done already. One that someone has worked out all the bugs, bought all the little parts you didnt figure on, and is now taking a whopen on what they spent vs what they are selling it for. I gurantee if you start a project, it will take longer than you planned, it will cost more than you expected, and its very possible youll be sick of it before you ever get it done.