throttlebody to reg carb.

I am in the process of changing the stock intake manafold and throttlebody
to a high performance intake and carberator in a 88 4x4 chevy
silverado.Will there have to be any other changes to make this work?

You will likely need a fuel line pressure regulator because the FI pump
likely puts out too much.

Lots of carb engines need a fuel return line to help stop vapor lock.
Your FI engine might have one as well. It is important on some FI
systems as the returning fuel goes to a cooling jacket on some pumps and
fills up a baffle area so the pump still has fuel to pick up when the
tank is low and you corner.

My Jeep for instance has a filter just before the carb with 2 outlets on
it. The center one goes to the carb, the top one goes to the return
line. It is important the return line is above the carb line to avoid
gas siphoning back to the tank when it sits and to let air go back if
the gas vaporizes from heat (vaporlock).

I think I would put the pressure regulator just before the filter. The
carb should say what line pressure is needed.

Is your ignition system tied into the FI? You might need a stand alone
distributor/spark system or it might already have it.

Just some thoughts for you...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
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slr wrote:
>
> I am in the process of changing the stock intake manafold and throttlebody
> to a high performance intake and carberator in a 88 4x4 chevy
> silverado.Will there have to be any other changes to make this work?

On Sun, 23 Apr 2006 13:01:29 -0400, Mike Romain >
wrote:

>You will likely need a fuel line pressure regulator because the FI pump
>likely puts out too much.


Yes you need to step it down to about 5 PSI as stock TBI pump
deleivers about 13 to 15 PSI to TBI regulator which delivers between
10 and 11 PSI to injectors.
-----------------
The SnoMan
www.thesnoman.com