I have a 93 T/A with 69,000 miles on it and after a recent trip to the machine shop, my heads are mine. But, since my heads are already off, I decided to get the ported/polished with flow numbers somewhere within the vicinity of 250-270 CFM (intake) 190-215 CFM (exhaust). I'm not sure on the cam yet, but I've narrowed it down to an XE 230/236 or a cc305 cam as this will be a daily driver. I'm gonna use double valve springs (don't know if I should use crane or comp cams), crane gold 1.6 rr's, stock "pink" pushrods) crane 5/16" guideplates crane "fast bleed" lifters, and crane locks and retainers.

So essentially, my ENTIRE valvetrain (top-end) will be getting beefed up. For my exhaust, I am getting a custom True Dual setup done. For this, I'm gonna use 3" Hooker LT's running into a (2) 2.5" reducers, 2 dynomax bullet mufflers, and lastly 2 borla intercooled exhaust tips.

My questions are

1) What modifications will be necessary to ensure that my engine and car for that matter stay in one piece?

2) I am sure I want to spray, but I don't have any money for the N20 system I want right now. So, will I incur any adverse efects from running cold plugs and a n20 cam WITHOUT having N20?

 

Your valve train mods are primarly for HP improvments. To strenghten an engine you have to biuld the lower end. That said, if you run the proper saftey equipment(fuel pressure safty switch,window switch, ect.) it is fairly safe to run up to a 100 shot on a stock lower end or even a 150 shot with only a fuel pump upgrade.

As far as the plugs go I wouldnt change them untill you are ready to install the N2O.

 

Yeah, I know the only purpose of the building the bottom end up is to make sure it can handle what the top will lay down.

I was actually referring to a new rear, forged pistons, rods, etc. when i asked what would be necessary to stay in one piece.

What about a cam that is specialized for Nitrous? Should I also change this when I run the Nitrous? Or is it just arbitrary? In other words, they're just SAYING that this cam is better for N20 when in actuality the cam of my choice will be just fine.

Either way I want to be able to spray a 150 shot while upgrading the necessary components, like my fuel pump, plugs, etc.

 

nlike blower apps, a special cam per say is needed to get good preformance out of N2O. Of coarse , cams with the their powerband higher than stock will benifit from the fast high reving effects of spraying ,if that makes sence.

As far as other upgrades....you can plan on a stronger rear end , as the stocker want last long with a 150 shot if you hook on launches . If you have an M6 plan on a good clutch, too.