280zipper

Im looking for around 10:1 on 91 octane. can this be made possible with the stock n42 block, crank, flat top pistons (possibly overbored, havent got the word from the machine shop) and a shaved head? will i have problems with this CR without the use of a aftermarket cam? if yes what duration/lift would be best for my application? Finally is the CR im looking for possibly by mixing and matching different oem heads/piston combos? keep in mind im 17 and i dont have the cash to shell out on tons of machining and such so im purly out to find the cheapest most cost effective way to raise the compression and squeeze just a little bit more out of my NA l28. also does anyone know what head came on a fuel injected 280z in 1976? this bit of info might come in handy for further research...

Hello everyone here at Hybridz. this is my first post so im new to the site and n42 l28's so dont be shy to let me know what im doing wrong. i recently purchased a 76 280z on my 18th birthday and it misses on the 3rd and 4th cyclinder so i purchased new rings and a full gasket set to do a partial (low budget) rebuild. i know everyone frowns upon replacing internals with anything that isnt "OEM nissan" or whatever so thats not the kind of feedback im looking for. my real question is: Can i get close to the same reliability or performance with an engine rebuild or refresher without paying tons for cash i dont have to machine shops for block hot tanking, rod cleaning, heading cleaning and balancing ect. ect. and what can i do myself? normally i would shell out the cash to do it properly but i already have a 72 SR510 moneypit and i only need that l28 to last till the end of this coming school year or until i find a reasonable priced l28et. thanks a million everyone, and ill be posting pictures of my 510 and z once i get used to the site.