carb conversion...

CHADD · 09-17-2007, 10:14 AM

everyone who swapped out their TBI for a carb... did you swap fuel pumps to or used a different fuel pressure regulator?

Have a Motorcraft 2150 2bbl carb im rebuilding to use... about 350cfm...

denoffsinger · 09-17-2007, 10:36 PM

We are using an aftermarket fuel pump but only because we are using a fuel cell. The stock fuel pump should work with no problems. For any of you who live near Lawerenceburg Indiana, we will have our truck down there for funfest Oct 12, 13, and 14.

Quote: Originally Posted by CHADD
everyone who swapped out their TBI for a carb... did you swap fuel pumps to or used a different fuel pressure regulator?

Have a Motorcraft 2150 2bbl carb im rebuilding to use... about 350cfm...

pacawallop · 09-21-2007, 08:47 AM

Quote: Originally Posted by CHADD

everyone who swapped out their TBI for a carb... did you swap fuel pumps to or used a different fuel pressure regulator?

Have a Motorcraft 2150 2bbl carb im rebuilding to use... about 350cfm...

The Holley 12-803BP is adjustable from 4.5 to 9 psi and allows fuel to continuously flow and keep the pump cool, quiet and alive.

cmittle · 09-23-2007, 11:15 PM

Does anybody know of anywhere I could find more information on the parts required to change my '88 2.5L TBI to a carburator.

Thanks,
Cory

1BadElky · 09-23-2007, 11:27 PM

was the 2.5 carbed before it found its way into the s10?

CHADD · 09-25-2007, 08:59 AM

Quote: Originally Posted by 1BadElky

was the 2.5 carbed before it found its way into the s10?

1980-82 chevy citation had a carbed 2.5L iron duke...

but it didnt have a cross-flow head..

you need the dizzy off of the citation... Holley 2bbl carb and adapter... then just swap it over...

151 racer · 09-25-2007, 03:52 PM

All the citations I have owned always had the crossflow head. The last non-crossflow head that I have seen on of 2.5 was on the late "70's" rear wheel drive Pont Sunbirds, chevy Monza style of car. Some of those cars also has the crossflow head. They along with the early citations had a carb, but I don't know if the intakes would fit the later 2.5 up to 1987 anyway. I know the dist. works as that is what I'm using in my circle track car.
.

dimerunner88 · 09-25-2007, 09:39 PM

since we're talking about the older engines,i found a cam for the 1970-1984 2.5 for $50 but i dunno if it will work with the newer ones

bear76 · 07-11-2008, 11:43 AM

bumping because of good info.

Rudejester.s10 · 07-18-2008, 12:36 AM

Quote: Originally Posted by dimerunner88

since we're talking about the older engines,i found a cam for the 1970-1984 2.5 for $50 but i dunno if it will work with the newer ones

Later 2.5's were roller, so no they wont work...also. remember when swapping heads, that the spring for a roller are diff for a hydraulic...make sure youve got the right ones there too.

grillen85 · 07-27-2008, 02:47 PM

yea this is good info .. if I ever do a turbo I will go carb an blowthru.. rather then dealing with the tbi crap.

truckhorns · 07-27-2008, 04:47 PM

Good tips, I didn't know you could use that

09-17-2007, 10:14 AM	#1
CHADD Registered User Join Date: Apr 2006 Posts: 57 Location: User is: OffLine	carb conversion... everyone who swapped out their TBI for a carb... did you swap fuel pumps to or used a different fuel pressure regulator? Have a Motorcraft 2150 2bbl carb im rebuilding to use... about 350cfm...
	[Reply w/Quote]

09-17-2007, 10:36 PM	#2
denoffsinger Registered User Age: 30 Join Date: Aug 2005 Posts: 47 Location: User is: OffLine	Re: carb conversion... We are using an aftermarket fuel pump but only because we are using a fuel cell. The stock fuel pump should work with no problems. For any of you who live near Lawerenceburg Indiana, we will have our truck down there for funfest Oct 12, 13, and 14. Quote: Originally Posted by CHADD everyone who swapped out their TBI for a carb... did you swap fuel pumps to or used a different fuel pressure regulator? Have a Motorcraft 2150 2bbl carb im rebuilding to use... about 350cfm...
	[Reply w/Quote]

09-23-2007, 11:15 PM	#4
cmittle Registered User Age: 24 Join Date: Jul 2007 Posts: 7 Location: User is: OffLine	Re: carb conversion... Does anybody know of anywhere I could find more information on the parts required to change my '88 2.5L TBI to a carburator. Thanks, Cory
	[Reply w/Quote]

09-23-2007, 11:27 PM	#5
1BadElky hates fail-o-matics Age: 18 Join Date: Mar 2007 Posts: 2,627 Location: Albany, GA User is: Online	Re: carb conversion... was the 2.5 carbed before it found its way into the s10?
	[Reply w/Quote]

09-25-2007, 08:59 AM	#6
CHADD Registered User Join Date: Apr 2006 Posts: 57 Location: User is: OffLine	Re: carb conversion... Quote: Originally Posted by 1BadElky was the 2.5 carbed before it found its way into the s10? 1980-82 chevy citation had a carbed 2.5L iron duke... but it didnt have a cross-flow head.. you need the dizzy off of the citation... Holley 2bbl carb and adapter... then just swap it over...
	[Reply w/Quote]


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09-25-2007, 03:52 PM	#7
151 racer Registered User Join Date: Apr 2006 Posts: 46 Location: User is: OffLine	Re: carb conversion... All the citations I have owned always had the crossflow head. The last non-crossflow head that I have seen on of 2.5 was on the late "70's" rear wheel drive Pont Sunbirds, chevy Monza style of car. Some of those cars also has the crossflow head. They along with the early citations had a carb, but I don't know if the intakes would fit the later 2.5 up to 1987 anyway. I know the dist. works as that is what I'm using in my circle track car. .
	[Reply w/Quote]

09-25-2007, 09:39 PM	#8
dimerunner88 it really is Age: 22 Join Date: Jan 2007 Posts: 17,039 Location: Clay City,IN User is: OffLine	Re: carb conversion... since we're talking about the older engines,i found a cam for the 1970-1984 2.5 for $50 but i dunno if it will work with the newer ones
	[Reply w/Quote]

07-11-2008, 11:43 AM	#9
bear76 Registered User Join Date: Aug 2007 Posts: 154 Location: User is: OffLine	Re: carb conversion... bumping because of good info.
	[Reply w/Quote]

07-18-2008, 12:36 AM	#10
Rudejester.s10 Registered User Age: 33 Join Date: Jun 2008 Posts: 23 Location: User is: OffLine	Re: carb conversion... Quote: Originally Posted by dimerunner88 since we're talking about the older engines,i found a cam for the 1970-1984 2.5 for $50 but i dunno if it will work with the newer ones Later 2.5's were roller, so no they wont work...also. remember when swapping heads, that the spring for a roller are diff for a hydraulic...make sure youve got the right ones there too.
	[Reply w/Quote]

07-27-2008, 02:47 PM	#11
grillen85 Registered User Age: 26 Join Date: May 2005 Posts: 305 Location: User is: OffLine	Re: carb conversion... yea this is good info .. if I ever do a turbo I will go carb an blowthru.. rather then dealing with the tbi crap.
	[Reply w/Quote]

07-27-2008, 04:47 PM	#12
truckhorns Registered User Age: 42 Join Date: Feb 2008 Posts: 20 Location: User is: OffLine	Re: carb conversion... Good tips, I didn't know you could use that
	[Reply w/Quote]

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