if i replaced stock fuel pump with 255lph would that be more than enough for 42# hour injectors and 9-10 #'s of boost? +heads and cam

 

Yes. Get the Racetronix plug & play system with the pump. I just put it in and it handles by current 12psi of boost (+heads&cam) with no problem.

 

Buy the latest issue of GMHTP magazine. There is a full article which covers the Racetronix FLT1 pump system installation and injectors.

http://www.gmhightechperformance.com/toc/gmht_toc/

 

255lph is enough for that setup, but maybe you should get bigger injectors like 48# for heads+cam+9/10# boost

 

Maximum how much horse power 255lph pump support??? Everybody says different thing..500rwhp,600rwhp.... ??????

 

its got 42# inj. on it, the assistant from the procharger, whats the diff. between a walbro 255 lph and a racetronix? are both just hook up drop back in gas tank?

 

There is no difference.racetronix kit includes Walbro 340 pump (255lph pump). Racetronix sell it with a complete kit.(with wiring harness etc..)

 

Incorrect...

The LT1 F-body cars have a pump that is inside a plastic fill-bucket. The fill-bucket's inlet and check-valve system in combination with the fuel pump are designed to draw fuel from the bottom of the tank via suction. This keeps the bucket full at all times and the pump fully immersed in fuel regardless of the tank level so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating (air bubbles) the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. The F-LT1 cars have minimal to no baffling in them. This can cause detonation and possible engine damage. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The bucket can also effect motor cranking time as the priming time is reduced under certain conditions. The return line from the fuel pressure regulator is diverted back into the bucket via a filter sock inside so that the unused fuel also helps keep the bucket full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump's life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage). The Racetronix pump assembly is modified so that it will seal in the bucket’s rubber check-valve so that its function is retained. The Racetronix pump assembly is fitted with a factory style fuel tube not a rubber hose. This hose is important as when the fuel module is placed back in the tank it must pivot which can cause the rubber hose to kink. This fuel tube is much more resistant to the solvents in today’s gas and it will not crack, split, swell and collapse like a rubber hose. The standard Walbro kit comes with a short length of 50PSIA rated rubber hose. The Racetronix fuel module is equipped with a one-piece soldered wiring harness made from mil spec. 14 gauge Teflon/silver wire. (upgraded from the factory's 16 gauge unsoldered harness) This is the same type of wire used at the factory as Teflon is the most resistant to deterioration when exposed to gas. This harness has a Walbro connector at one end and GM pins at the other which fit directly inside the factory connector. Due to the age of the F-LT1 cars much of the in-tank connectors are black / corroded due to age. The Racetronix harness replaces all these questionable components. The standard Walbro kit comes with a plastic coated in-line wiring adapter. This adapter must plug into the existing questionable factory in-tank wiring thereby adding additional connections and length.

 

oh well thanks for this long explanation. So I did the right thing for choosing your product #FLT1-FPK2

 

can u install it with just the whole in the top? hopefully thats the route im going, how much is the racetronix kit

 

The whole kit (Fuel pump with wiring harness) is 250$ at thunder racing.

 

you just hook the new wiring harness into the old one plug it in, hook up lines, drop in, and its ready to go?


it doesnt need to be prog'd into the pcm does it?

 

I know its ready to go and yes without PCM tuning

 

Racetronics, Can your dual fuelpumps use this bucket?

 

I converted to two Walbro 255 lph pumps in the "97" stock tank (12 psi - 72#/hr Simens). Had to dicard the plastic fuel bucket (2 pumps will not fit). I have dual circuits for each pump, and, a K_bell BAP on pump #1. Also, i made my own bulkhead plate and altered the stock outlet plumbing. The stock set-up is very bad for flow. Mr racetronix is right, without the fuel bucket, when fuel gets low, the pumps can be starved. I'v had some air-sucking problems when tank gets to 1/4 or less. Car starts to stumble @ the apex when power is on. I cut a hole in the floor pan and went in from the top. Very easy to get @.