Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I think they did away with the vacum regulator on the rail in 04??
02 Silverado
02 TrailBlazer
<div class='quotetop'>QUOTE(RedHeartbeat @ Mar 21 2006, 05:21 AM) [snapback]47636[/snapback]</div>I can't speak for "all" but I have a 2002 5.3 in a Tahoe and a 2003 5.3 from a Silverado and both have a vacuum regulator on the fuel rail.Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
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1965 C-10 shortbed stepside, 2003 5.3/4L60E conversion. Power steering, tilt wheel, power front disc brakes, 3.73 one wheel peel, 2.5/4 inch drop, relocated fuel tank and battery, 2002 Silverado buckets and console. Swap Pics
1968 Camaro 95LT1/4L60E lots o' mods Web Page
1961 Corvette project.......... C-4 suspension and brakes, 02 LS1/T-56 awaiting installation Pics
The LS1 compensates for low vacuum and boosts the fuel output in the PCM. I wonder why the trucks do that the old fashioned manual way.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I opted for the 97 vette fuel rail with the vacuum regulator in it. Don't ask me why, I just did it.
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
<div class='quotetop'>QUOTE(RedHeartbeat @ Mar 21 2006, 08:21 AM) [snapback]47636[/snapback]</div>your 1997-1998 corvette and 1998 camaro/firebird had a dual line (return line) with anDo all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
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external fuel pressure regulator.
the 1999-2003 gneIII truck engines (4.8/5.3/6.0L) have an adjustable fuel pressure
regulator with vacuum regulation (5-8psi)
airdeano
1965 C10 5.3L/4L60e (300HP 4-Speed)
http://home.comcast.net/~airdeano/1965/img/196531.jpg
http://home.comcast.net/~airdeano/1965/index.htm
<div class='quotetop'>QUOTE(airdeano @ Jun 7 2006, 11:03 PM) [snapback]54950[/snapback]</div>My '98 F-body engine doesn't have a dual line fuel rail. I believe it used a regulator at the fuel pump and a single line to the rail, but I won't swear to it.your 1997-1998 corvette and 1998 camaro/firebird had a dual line (return line) with an
external fuel pressure regulator.
airdeano
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[1/8 mile E.T. - 8.23 @ 82.86 mph w/1.82 60'] '98swb,4/6drop,20"RozziDeeps on 275/40ToyoProxes '98LS1/4L60E,TRCheaTR cam,Ported TB,Billet MAF ends,MSD8.5 superconductor wires,S&P midlengths,!EGR,!cats,2 1/2" true duals w/X-pipe,Dynomax Ultraflows,TCI 3000,billet servo,TCI deep aluminum pan,3.73's w/Auburn posi; Eclipse CD, Rockford 6 1/2's, Memphis 12's, Punch 200 ix, Punch 500x
97-98 Corvettes are the only LS1 engines I know of with a feed and return line on the fuel rail. My (2) 98 T/A engines had a single inlet, also.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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