Should the deal go through, I will take you up on that.I think the exhaust rockers were just regular straight ones, same as used on the 273 motors with solid lifters. 340's used stamped rockers, which would theoretically work if one would fit on the shaft. The distance from the shaft to the ex valve was the same. I have some straight adjustable ones if you need to buy a single.
Maybe, I dont' know. But I know that 273 rockers have been used on plenty of 340/360 builds making 400+hp with no ill effects. I'd bet many of those cams had more spring than the original TA motors.Wrong. The 273 rockers are different. The 340 T/A rockers are stronger made to deal with high rpm, heavier springs.