Hi, I hope I’m asking these questions in the right place. I’ve never had anything to do with building a Barra, although I have been building hot street and race engines, Na and blown for over 40 years, but mostly chevs. No EFI etc.
Anyway, my stepdaughter has been racing her BF utes, she has a 6 cyl Barra NA with auto, and a 260 boss with 6 speed. So now she wants to go faster. So I suggested we work on turboing the 6cyl. I was told the NA rods are weak, so I reckon the best idea is to start building a second engine. Aiming initially for 350-400rwkw, but build it strong enough, so that it can be cranked up some more if needed.
Do I need to find a turbo block, or are the block and crank the same as NA?
At what kind of HP level do I need to be looking at a girdle for mains?
I was looking at Atomic engine kit, with good rods, forged pistons, oil pump, head bolt upgrade etc. Anyone have any comments about them?
I also see that the NA auto boxes aren’t good once the HP goes up. If I use a ZF box, how compatible are the electronics?
I like to have my engine and driveline combinations worked out before I start buying, building anything. I’d rather do it once and right first time. So as I find out more, I’ll probably have more questions. And if anyone has any good advice of what to look for, etc, feel welcome to add your comments.
TIA
