68 impala

Ok thanks for all the advice guy (post-drive by wire driving me crazy), but the fuel injection has been scraped. Went to livernoir motorsports and ordered intake/msd box/tci trans controller, today. ANy suggestions on a carb and fuel regulator set up? 1968 Chevy impala/2007 Lq4/4l80e. Fuel system is a 1995 caprice fuel tank with walbro hi-pro intank fuel pump and 1998 Corvette regulator/filter. Set up was pumping a healthy 57psi to the fuel rail, now I need knock that pressure down since I am going carbed. And what a good sized carb for this set up? http://www.youtube.com/watch?v=IH19cpgyNhw

bozzhawg

Damn man, you gave up already.. That is the attraction of the LSX, power and gas mileage.... Shiiit to each is own, good luck bro.........

68 impala

i tried, i want to enjoy the car now. got a 2010 ls3/6m rs/ss. So this one can suck a lil gas.

Pocket

iTrader: (22)

Devolve the fuel system. Using two regulators is a bad idea, esp with the high pressure pump

Swap the pump with a TBI truck/car pump and run a return line up to the new regulator

bczee

iTrader: (12)

You need to swap it for a late 80's early 90's EFI pump.. (15psi ?).. and use a regulator on it to bring it down to 6-8psi.. Also, there might be some lower pressure pumps that mgiht work..

If you use the LS1 or LT1 pump.. you will burn it out buy regulating it down that far.

I recall that I used a GM AC/Declo pump #25168719 to convert my 84 Z28 L69 car from mechnical pump to intank pump.. maybe it might work (google it to cross reference it to other brands). It might work ?

68 impala

Thanks guys.

TomM

iTrader: (56)

Could have swapped to a drive by cable TB for cheaper maybe, and just do a cable.......man I hate you couldn't get it working.......good luck with the new setup.....I was pullin' for ya'.....

T,

68 impala

Less then 24 hrs, got my intake/box/trans & tci trans controller/harness.

68 impala

.............

Pocket

iTrader: (22)

Not sure what you're still looking for

Setting up the carb is a 10 second search
https://ls1tech.com/forums/conversio...-database.html

Fuel system changes are already posted

68 impala

thank you sir!

Pop N Wood

iTrader: (1)

This is a good thread to start with

https://ls1tech.com/forums/conversio...-dist-ls1.html

Most guys go with a 750 carb of some sort. If I had to do it again I would look at the quick fuel carbs. Seem to be aquality piece with lots of adjustability. Used carbs will save some serious bucks. I can tell you first hand an out of the box double pumper needs some work to function right with a single plane intake. Nothing that can't be worked, but I have to think there are better starting points.

68 impala

After months of chasing my tail and thousands of dollars spent, I have found that my 6.0. from a donor vehicle (2007 2wd chevy silverado classic crew cab 1500hd with 6.0 lq4/317 heads/4L80 trans), has a 58 tooth reluctor wheel. Finally after snatching the wiring harness and f.i. system (modified and flashed by SPEARTECH spring 2009) off after it was all installed but not functioning properly and then converting over to carb/intake, and still having electronic issues, the problem was narrowed down to timing. I spoke with edelbrock and MSD techs and they told me that the information that I believe to be true was incorrect (24x wheel) and they told me how to look and see.

68 impala

Mean while I did a CAI and muffler delete to my 2010 RS/SS 6M and it feels and sounds great.

68 impala

https://ls1tech.com/forums/conversio...l#post13762402

68 impala

My post on this thread show how this problem came to an end.

LS1MCSS

iTrader: (18)

One quick, easy way to tell if it's a 24X or 58X is the color of the crank sensor. Black for 24X and gray for 58X.