TBI pressure regulator mod

[Eric Deslauriers]

Hi all,


I've been having e-mail problems. Sorry if this is a redo.

E-

Eric Deslauriers wrote:

> Hi all,
>
> Does anyone have any thoughts on changing fuel pressure for TBI
> applications by doing the following instead of purchasing a regulator?
> http://www.dynosources.com/dyno_sources_GM_Pressure_Regulator_Hat.htm
>
> I'm trying to be economical (OK, cheap!) rather than buy a $70-80
> regulator.
>
> Also, does anyone know if there is a difference (& what it is) between
> the a late 80s car TBI and the 87-91-ish TBI regulators? I have a car
> TBI that looks like the one on my '93 Suburban (not the project - yet!),
> which is different than the one on my '88 Blazer & I wanted to hack one
> with a spare in case I screw up (me? Never! Well, maybe...).
>
> Is one TBI unit preferred over the other? I don't see them as readily
> interchangeable.
>
> Last question - if I go to a 2" TBI (Holley offers one inexpensively for
> my year truck as an option to a BBC TBI, plus it comes with bigger
> injectors - 53# I think), should I punch out the intake holes in my
> intake to 2" as well or buy an aftermarket TBI (or dual plane?) intake ?
> I have a spare intake in case I screw my original one up.
>
> TIA!
>
> Eric D
> 88 K30 Blazer

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