Fuel side of swap
#1
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Fuel side of swap
I have a 97 that I am thinking about puttin in an LS1, I have the motor/trans/harness and was going to use the stock LT1 tank/pump with the vette filter/reg set up but then thought that going to the LS1 tank/pump would be better but now I just am not sure.
I got the LS1 tank but no filler neck (how much are those??) and if I dont get ripped on ebay i have a fuel pump assembly with a 255 walbro installed so I have options.
If I was to go with the LS1 tank set up what lines do I need to run? I thought it would be just the line from pump to filter to engine bay but then I read where I had to run some line back to the pump from the filter for the return, this should not be that complicated.
BTW-this will be a drag car so functionality is all I am looking for, I just need ti to feed the motor fuel.
Thanks,SH
I got the LS1 tank but no filler neck (how much are those??) and if I dont get ripped on ebay i have a fuel pump assembly with a 255 walbro installed so I have options.
If I was to go with the LS1 tank set up what lines do I need to run? I thought it would be just the line from pump to filter to engine bay but then I read where I had to run some line back to the pump from the filter for the return, this should not be that complicated.
BTW-this will be a drag car so functionality is all I am looking for, I just need ti to feed the motor fuel.
Thanks,SH
#2
a stock f-body with an ls1 has a returnless fuel system, its regulated by the pump assembly in the tank. If you pick up a modified pump, with the walbro, then it may not self regulate anymore. Thats what you need to find out, if that modified pump still has the regulator in place.
#3
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1) If you still have both the feed and return line running all the way from tank to engine, you can use the 97' Vette fuel rail, it has a feed and return line with the regulator built into the fuel rail.
2) Or you can run a bypass requlator up front with the later 1 line fuel rails. (or a 99' Vette filter/reg).
3) If you use the F-Body LS1 tank which has the pump and regulator in the tank/sender unit. Then just need one 3/8" feed line, You should be able to just use what you already have from the LT1 line.
2) Or you can run a bypass requlator up front with the later 1 line fuel rails. (or a 99' Vette filter/reg).
3) If you use the F-Body LS1 tank which has the pump and regulator in the tank/sender unit. Then just need one 3/8" feed line, You should be able to just use what you already have from the LT1 line.
Last edited by bczee; 11-27-2007 at 06:36 PM.