Christos

Ok, I live in california now (and probably for a while) and with my limited car knowledge, I am confused on what course to take for a engine build up/ replacement.

I have to be emissions legal. I have to replace my engine with another TPI system. Fun california laws.

My car is a 1986 IROC Camaro, 305 TPI "LB9".

I have a question on a 350 crate engine. I wanted to get the "zz4" with the carb originally, but i have to keep my TPI stuff, i figure it would make more sense to get a 350 build which was intake-less. SDPC seems to have good prices on engines, and I noticed they sold an intake-less "330
horsepower 350ci) crate engine, with vortech heads. do vortech heads work with the stock GM TPI plenum? Could i toss on my old 305 TPI system onto that engine? how much will its specs change? i know fuel injection gives slightly better economy, and a bit more torque. Would it lower
the HP down to 260 or so? even less?

Also, If the above combo DOES work, what would you suggest replacing for more performance? a TPIS mini-ram? or just get large runners and a new ported plenum base?

I need to keep things emission legal, and don't have lots of money to drop into a say, LT4 350, and some 5 grand TPI intake combo.

Would i see a noticeable enough increase in power if i just got that 350 vortech crate engine, and tossed my old 305 TPI stuff on it? Would there be a way for me to beef up the TPI portion of the engine in increments afterward? what would i need for a basic swap? just 22# hour injectors? new
PROM?

If anyone has bought or built a 350 for a TPI setup, please tell me specs and prices. I am interested in both. I hope having to stick with my TPI setup won't hinder my goals for performance.

Sorry for the improvised lingo on everything TPI related!

Well, as always, any feedback is appreciated! I still suck and know nothing about cars. but im trying!

85ZZ4TPI

A little help for ya, Vortecs wont work, ZZ4 will work and you can look into running your 305 emissions crap on it. All you need is a adjustable pressure reg. to make it run right. headers are a good idea to. Look up TPIS.com they will be willing to fill you in on anything else. Good Luck

david foraker

the GMPP 92-up caprice crate motor works. thats what i got in my iroc. it's not the fastest, i still gotta get some goodies for it. it does have ***** though. i only paid 1500 and got the 3 year 50,000 mile warrenty

98_1LE

Anything that doesn't have Vortec heads from the ZZ4 qnd down will work nicely. Pick one that fits your budget and reinstall all the emmissions stuff and maybe a new cat/O2 sensor.

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87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association