I always thought the ls engine used a different fuel pump than the 96-up. According to our "sticky" on the swap it says anything pre 96 would need the walbro pump, so should my pump work since I have a 96 gmc that was a 5.0/auto?
Travis
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I always thought the ls engine used a different fuel pump than the 96-up. According to our "sticky" on the swap it says anything pre 96 would need the walbro pump, so should my pump work since I have a 96 gmc that was a 5.0/auto?
Travis
Yes, it'll work fine. I'm running a stock 97 vortec fuel pump and pushing 420 plus rwhp.
Mine didn't work but the check valve was bad in the tank.
I think the fuel was going through the lines and back into the tank, would not hold good fuel pressure at WOT.
thats good news because the fuel pump in it right now is only about 4-5 months old.
:)
on an older (pre 1996) do you need to run a bigger pump?
how big?
not from personal experience but from what I've read and spoke with others about 95-down will need to upgrade there fuel pump. Alot are recommending the walbro 255.
I've always used the Walbro pump for a 87 Buick Grand National in the OBS trucks.
Quote:
Originally Posted by RedHeartbeat
The one for the GN plugs in like a factory replacement? or do you have to get a whole new pickup and fittings and everything?
its very similar to the stock pump.
Quote:
Originally Posted by RedHeartbeat
X2, easy to install after you get the old one out
on my 98 i put in the walbro 255 and have had 2 go out in 4 months. im giving up on them and putting in a stock unit. but maybe i just have been having bad luck lately
Maybe they're sending you the cheap knock-offs.
its a possibilty they r from bbk. who knows i give up though lol
Buy one from Racetronix.com along with a hotwire kit. You may not be running a large enough power wire and its burning them up because of it, that or you're just running the tank on empty all the time and they're getting too hot.
im wondering if thats whats going on. but last night on my back from vegas it started acting up and almost left me stranded. i just order up a new stock pump and going to put it in and see what happens
walbro has a bad batch of the 255, i think mine is bad too, takes a few cranks to start.
lets say the 96 fuel pump will work, is there an adapter to adapt the stock (96) line to the 03 fuel rail (different fittings)?
yeah russel makes some. my 255 would lose pressure and would only make 10 psi but like red said i think its not getting enough current through the stock wiring