HighHorseZ

Want to swap my 86 305 TPI for a new ZZ4. How difficult is this conversion? Can I use my stock TPI, injectors, and computer? Can I use my stock wiring harness? Will all of my accessories bolt up the same (alternator, power steering)?

Thanks,
Mike

R Defever

I think all of your accessories will bolt right up, but you'll probably have to get the 24# injectors and a custom burnt chip.

------------------
85 Z28 (Soon to be GMPP 350 HO)
Headman Hedders and matching y-pipe, Edelbrock Performer, Ram Air, Accell cap and rotor, Accell Supercoil, 160 stat, highflow Catco converter, absolutely no other smog equipment, B&M shift kit, Rapidfires, numerous carb mods, and flex-a-light fan.

"If you think education is expensive, try ignorance."-Ben Franklin

Kevin91Z

iTrader: (1)

You will need new injectors at the very least... 22lbs should do fine. I also recommend either porting your stock base, or getting an aftermarket base. Your accessories, being v-belt, should bolt right up. You can get a new chip, or use your stock one and hope it runs...

------------------
1991 Camaro Z28
5.7L 5-Speed
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
Webmaster: ICON Motorsports

85ZZ4TPI

I did this conversion to my 85 305 z28. You dont need injectors! All I did was install a adjustable fuel pressure regulator and bump the pressure up. It runs great. Your stock injectors are good to 400hp with the regulator. I didnt do any other major mods except gutted mass air, headers,and a 52mm TB. Runs great, idles at 650rpm. I didnt even do a chip yet.