what would be good pressure my stock 305 tpi and how do i adjust it
and if i was to upgrade the cam - intake runners and base should i go to bigger injectors

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87 IROC-Z 305tpi
still $h!ten on
rustangs

 

my 86 305 tpi fuel pressure is about 41psi.

 

41-47psi w/ vac hose of, that's what it is for my 350, not totally pos. on the 305tpi? As if you were to put a cam in it possibly upsize the injectors all depends on type of came and how muuch fuel the engine wants, but just runners no.

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88' Iroc-Z 350 TPI
36,000 orig. miles
Ported/polished heads
Milled heads 10 thousands
MSD 8mm Wires
Random Technology CatBack
TPIS adj. fuel pressure regulator
TPIS Airfoil
B&M Shift Kit
Gutted Cat
3.27 posi
Best run stock=14.344 95.78 mph

 

40 - 47.5 psi vacuum line off. the only way to adjust is by getting an adjustable fuel pressure regulator. by increasing pressure to 52 psi will make the injectors change to a flow of 22#/hr

 

thanks for the info i have to get new injectors anyway one is ticking goes away when chevron techron is added but comes back
prob this winter changing intaake base and runners and gettin air foil more air =need more gas plus may change cam or upgrade to 350 lt1 vette block

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87 IROC-Z 305tpi
still $h!ten on
rustangs

 

u won't need an upgrade to bigger injectors if u are doing a cam and runners...at least you shouldn't...

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*89 Trans Am GTA
*Moderator at www.transamgta.com

To hell with the GM vs Ford war. We must unite, as brothers to fight the plague that is overtaking the world...RICE

Tony