Ok, I swapped my 2.8 to a 3.4 about 1,000 miles ago (runs great), 3.4 injectors and what not, but I checked and it seems that my fuel pressure regulator is going bad. The one in there right now is for the 2.8.

So my question is, should I go with a regulator for a 3.4? I heard that either a 2.8 or 3.4 regulator will work, and that they may be the same thing. Which do you think will work better??? Going with a stock part, thanks!

Reply Like

05-08-2008, 08:32 PM

jstrdn90rs

Senior Member

Join Date: Jun 2006

Location: Desert Heat

Posts: 503

Likes: 0

Received 0 Likes on 0 Posts

Car: 90 RS/90 Z-71/73 Vega

Engine: 3.1/5.7 TBI/5.7

Transmission: 700R4/700R4/350turbo

Axle/Gears: 3.23/3.42/3.42

Re: which fuel regulator?

For what its worth I am running a adjustable BBK regulator for a TPI on my V6 ..the adjustment screw will need to be shorter in length ..hits the bottom of the upper plenum.So that could be an option for you?.

Reply Like

05-10-2008, 07:00 PM

oil pan 4

Supreme Member

iTrader: (1)

Join Date: Feb 2004

Location: High plains of NM

Posts: 1,040

Likes: 0

Received 1 Like on 1 Post

Car: 89 Firebird

Engine: L98

Transmission: T-56

Axle/Gears: 3.73

Re: which fuel regulator?

I have a BBK. It bolts right on, no problem. The ajuster screw is to long that is it.

Reply Like

05-10-2008, 10:54 PM

1989karr

Supreme Member

Thread Starter

Join Date: Feb 2005

Location: Hawaii

Posts: 2,279

Likes: 293

Received 155 Likes on 144 Posts

Car: 89' Firebird

Engine: 3.4L V-6

Transmission: 700-R4

Axle/Gears: Whatever came stock!

Re: which fuel regulator?

thanks for the reply guys. I just lookep it up from the dealer, and the 2.8 and the 3.4 use the SAME regulator. Im gonna keep those aftermarket ones in mind though

Reply Like