Switching from Volvo TBI to Carb on a 1996 5.7 GI

Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
51,849
the other thing for more power if that is your goal. upgrade the heads to vortec. your boat may be a 1996, however the picture in post 16 is of a 1986-1995 intake (non-vortec). most likely your motor has 1991-1995 swirl port heads

if your block is an 880 block, then your motor is a 1995 motor may be a roller motor.

vortec heads are good 40hp over the swirl port heads.
 
C

camboat

Cadet
Joined
Dec 1, 2025
Messages
12
That would be great! Should I put a regulator on it or use it as is?
That will help keep everything looking stock using the low pressure pump and filter setup.
Thanks for the info
 
C

camboat

Cadet
Joined
Dec 1, 2025
Messages
12
Just a few more questions.
Here is a pressure regulator with attached gauge to get the fuel pressure dialed in.

Speedway Fuel Pressure Regulator 5-12 psi & Gauge 0-15 psi​

I can attach it directly to the Volvo low pressure pump and filter housing to make a clean installation.
Should I use a hard line from the regulator to the carb or will A1 fuel line work? It will be around 10-12" fuel line from the regulator to the carb.
I'm just fine tuning everything before I start ordering all my parts.

Thanks again for the help!
Jack
 
Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
51,849
I prefer the Holley fuel pressure regulator. The speedway branded parts were iffy

A1 fuel hose is fine
 
You must log in or register to reply here.
Top