Budget 340 Upgrades

Will building a stroker out of the original block hurt the value?

Yes, I think that's what Rob (RustyRatRod) has been trying to tell you. These cars are only original once, and if it's in real good shape and numbers matching, personally I would stash the 340 and use another block.

It could always be put back to stock if you wanted to.

How? To achieve the stroker you would have to overbore it, there goes the stock bore.

The car is very cool all original, sunroof convertriple, hood scoop, stripes. It sat outside under a cover and needs paint bumpers rechromed and stuff is a little oxidized. Its a driver I want a car that I can use with out freaking out about it.

All the more reason to tuck that 340 away and stroke a 360. That way IF you want to switch it back to original condition, you can.

I'd like to be at about 400hp.

You can exceed that 400HP number substantially by building a 360/408 stroker, depending on how much you want to spend.