FBI stuff: 368 up grade?

[Paul Workman]

Winter projects are looming, and I'm researching and planning ahead now. I'm planning on porting my heads as part of my phased approach to upgrades, along perhaps with an aluminum FW and 4.xx ring/pinion.

But, the thought occurs to me that while the engine is out and I will have already incurred the expense for gaskets, etc and trouble to pull the engine, is not a 368 upgrade more or less a "drop in" by way of sleeves and pistons (and fresh bearings, etc)? What am I looking at as a cost adder for parts and machining to do a 368 upgrade? Ball-park...What does a fully ported 368(?) with LT headers, optimum (stock cams!) cam timing, and open 3" exhaust put down at the rear wheels??

For the effort, I would be hoping to see rear wheels putting down hp a bit north of 450 (on stock cams). What do you gurus think?

P.