'92 5.7 305 TBI Performance?

[SouthBoston]

Could someone give me a rundown on mods I can do on my 1992 GMC's 5.7 350 TBI to get some more power out of it?

 

[am92]

Full exhaust, ultimate TBI mods, and a chip would be a good start

 

[dirtridinz71]

You can also modify the stock FPR to be adjustable to get more psi. A cam and intake make a nice gain but also more $$$$

 

[Blue95]

FIrst thing is a tune up:
ACDelco CR43TS plugs
AC wires
Fuel Filter
oil change
air filter
seafoam in the gas
coolant flush

Then on to mods:
Take tube out of silencer box on the fender, take out heat flap in the stock housing
Headers
high flow cat
muffler of choice
single 3" exhaust or 2.25" true duals
advance base timing 4*, make sure to unhook EST Wire under the cover under the hood, it is tan with black stripe
Ultimate TBI Mods
TB and injector spacers
change filters on injectors
send injectors out to be flow matched
performance chip
adjustable fuel pressure regulator or quarter under the stocker

 

[gm-alltheway]

If you have any questions about anything trying to get more power out of your tbi truck, i have one running about 425hp at the flywheel, feel free to pm me for any questions you may have