CK5
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LSX454 swapped 95 BASS burb.
- Thread starter shady
- Start date
Little lower, little cooler, bigger sounds.
That pressure drop is what I was noticing too.
I haven't done a 0-60 or anything today. But a couple quick pulls in town I seen it go from 77 down to 64.
Plan on taking it out to the old street race road tomorrow for a few pulls and a log with the new sender.
I need to look at my stash and see if I have enough AN stuff to get a return line up to the fuel rail area.
Also need to start checking out FI regulators and rails.
I haven't done a 0-60 or anything today. But a couple quick pulls in town I seen it go from 77 down to 64.
Plan on taking it out to the old street race road tomorrow for a few pulls and a log with the new sender.
I need to look at my stash and see if I have enough AN stuff to get a return line up to the fuel rail area.
Also need to start checking out FI regulators and rails.
What's the fuel pressure supposed to be on these systems? Thought std used to be like 43 or something for a long time..
Is there no test port on your fuel rails?
Gen IV factory fuel rail right? Test port should be on the passenger side
For the Holley you can set it to what ever fuel pressure you want within reason. I have mine set at 60 cause that’s where GM used these engine. If you vacuum reference it you could do to I bet 20psi easily.
Shady, what sensor style do you have selected in the fuel pressure sensor drop down for scaling? And where do you have the Holley set for fuel pressure?
Ordering a cheap part then a good part still cost more than just a good part, plus your time and frustration....
If the regulator is vacuum referenced it should drop a little, proportional to engine vacuum, when you nail it, if not, well, then it shouldn't.
The regulator.
And if the cheap parts last 2 years, that's a win to me. I've had supposed good parts that lasted less lol.
Apparently like this regulator. Can't think of a better version of it I could have bought. If you specifically want that style
And if the cheap parts last 2 years, that's a win to me. I've had supposed good parts that lasted less lol.
Apparently like this regulator. Can't think of a better version of it I could have bought. If you specifically want that style
I have used both that autometer and the Holley interchangeably, they have the same linear 5V scale and temp range.
The regulator.
And if the cheap parts last 2 years, that's a win to me. I've had supposed good parts that lasted less lol.
Apparently like this regulator. Can't think of a better version of it I could have bought. If you specifically want that style
That one isn't some cheapo unit, I'll agree. I just don't use that style, I use the vacuum referenced adjustable units that are rebuildable with a new spring and diaphragm.
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You don't need new rails, just a vacuum referenced adjustable regulator. I stock the Holley 12-880
Since you already have rails, I would just use them, you can always change rails if you change intakes or upgrade later, but I don't think its worth the extra cost in rails and plumbing for your current application.
I found out that I have to modify the mounts on my rails to use this rail on the new intake.
It really doesn't look hard, but I had been thinking about rails already after I found that out. Right after I bought the new heads.
New regulator is $250 for a decent one isn't it?
The rails are the cheaper side of that equation lol.
It really doesn't look hard, but I had been thinking about rails already after I found that out. Right after I bought the new heads.
New regulator is $250 for a decent one isn't it?
The rails are the cheaper side of that equation lol.
Holley 12-880 is about $185, you can use a much cheaper one if you don't mind the NPT threads. The 12-880 is billet with o-ring fittings.
The 12-886 is about $89 and has NPT threads, I don't stock that one but my distributor does.
The 12-886 is about $89 and has NPT threads, I don't stock that one but my distributor does.
Would I even need a vacuum reference in N/A?
I though those were mainly for carbs and boosted stuff. In reality I have absolutely no idea.
I do know some factory systems use it.
I thought the LS systems were all just constant even pressure though.
I though those were mainly for carbs and boosted stuff. In reality I have absolutely no idea.
I do know some factory systems use it.
I thought the LS systems were all just constant even pressure though.
