I would like to increase the performance of my engine, and I am not even near ready to rebuild. What upgrades can I make. Thanks for your help.
K78Z

 

I am in the same boat (lack of funds). So I put on the K&N intake, 21/2 exhaust without a cat.It will give you a noticable increase for very little money until you can afford to rebuild. Oh yea almost forgot headers.

Shane Morton 78 280Z owner.

 

I think I got just about everything done on stock engine from intake, exhaust, and ignition. It faster than stock but not much. I'm going to 274 deg cam and rising rate fuel regulator. I think that's going to give me a little bit more

Here is what I got

K&N filter well worth it
55mm TB worth it
MSD 6A w/ tach adapter
fuel enrichment circuit (15% more injector pulse)
6 in 1 header
2 1/2 in. exhaust with 2 chamber Flowmaster
and other little things