I would like to add my 2-cents here... you know me; always buttin'
in....
First off, those are eight-mile times, you're quoting, right? You never said in this post, but from other things I have read about your car, I felt sure that was right.
You want to pick that car up a little, but not go "wild" wwith modofocations that would destroy the street driveability of it, my solution would be to simply locate a replacement slant 6 that is a 225, and swap it into there. Those engines can be found all over the place, in all states of repair from worn-out to freshly rebuilt, for probbly less money thsn you'd have spent on a nitrous system, and the performance increase will proably be greater. While the engine is out of the car, you could mill the head, and install a cam ffor a LOT more grunt, if you wanted. I'm not talking about going 11-to-1 with the compression or installing a wild cam with an obnoxious idle and no low end torque. Just a moderate regrind, some more compression, and that little car of yours would feel like it had a totslly new lease on life!
The only problem with this plan is that the 170 headers might not work with the taller 225 block. You can probably work out a trade for some appropriate headers; there are lots of 170s around, I believe.
Whatever your problems with this swap, I think overall, you'll like having the performance increase (CONSIDERABLE!!!!) available to you 100-percent of the time, with no threat of "KA-BOOM," and probably more available horsepower, to boot.
That's the way I'd spend MY money, if I were looking at a similar hop-up.
All of your engine accessories, such as the alternator, distributor, and water pump would bolt right on from the 170.
Good luck with whatever you decide!:hello1:
