S10xGN

iTrader: (11)

MAP is measured against PSIA, not RPM. Depending on conditions, atmospheric pressure is 14.7 PSIA. Vacuum "pressure" is lower (I.E. 15" vacuum = 7.3 PSIA) and naturally, boost (if applicable) is higher. For instance, a "2 BAR" manifold pressure = 14.7 PSIG = 29.4 PSIA.

Are you counting the start and stop points? I think I have 6 with those in the mix...

Gray86hatch

iTrader: (83)

I have about 40 at idle and cruse down the highway. with the map as soon as it sees load it knocks it down to 29.

Big thing with running more timing is it will drive nicer and MPG should go up some. Just need to make sure when it sees load you kill some so you don't rattle it.

I have 40 in it as high was 3000 with no load.

Tim

speedtigger

iTrader: (16)

Does anyone else think this thread should be a sticky?

79-mailbu

are we able to trade files for the 6010 on here?

tennerv8

iTrader: (7)

I vote yes on sticky.

FormulaZR

iTrader: (7)

Here's what I have right now...probably going to actually back off 1-2* across the curve...


Idle-2000 - 20*
2000-3000 - 24*
3000-4000 - 26*
4000-5000 - 27*
5000-5500 - 28*
5500-6000 - 29*



Specs:
383 LS1
238/244 Hyd. Roller
MTI Stg 3 241 Cast Heads
Edelbrock Performer Dual Plane Intake
850 Carb
11.5:1 Compression (I think, could be a little higher)

In a jet boat...

BTW - that timing curve is what my motor liked the best when it was dyno tuned while still injected and in a car (although it preferred 27-28* in the upper rpm, but I forgot until I posted this).

xpndbl3

iTrader: (23)

put it all in at 2000 rpm and you need more timing than 29 degrees, i made best mph at 34 degrees, some guys run up to 36 on their combos.

FormulaZR

iTrader: (7)

What is your CR?


When this was in my Firebird, I couldn't get more than 30* timing in it with 91 oct. The boat runs the same fuel - only change is EFI to carb...

xpndbl3

iTrader: (23)

carb lowers air intake temp

anyways i'm around 11.2:1 or so

FormulaZR

iTrader: (7)

Hard to make that leap for me - scared to have a "bad day"...remember it's in a jet boat so it's always under load.

slp1300

iTrader: (8)

Great info!!! i got my 6.0 with 317 heads milled .050, edelbrock 2216 cam, 750 dp carb, th400 with 3000 stall, 3.73 gears in my 1987 c-10 pick up truck, i was using the 6 pill and went 13.58 in the quarter mile, then i took off the pill and did 15* at 0 , 33* at 3000 and 37* al the way until 6700, and my truck went 13.32, tomorrow i will go again to the track and try more of this and see if i can get better results.

slp1300

iTrader: (8)

i also have a 850 dp carb and im going to test it in to see if i can get better times with it too.

The stunningman

iTrader: (47)

I would be willing to bet you will gain MPH and have a quicker ET if you lower total timing.

What kind of fuel are you running?

slp1300

iTrader: (8)

im running 93 octane fuel

slp1300

iTrader: (8)

can you tell me your timming curve?

team39763

iTrader: (3)

That sounds similar my setup I was running a few years ago. Mine was a stock 6.0 with 226/228 cam, 850dp, TH350, 3600 stall, 4.56 gears, slicks, and running 32* of timing from 1500 up. My best run that night was 12.8@107 or 109. I was happy with the 12.8 so I didn't bother playing with the timing or carb tune. 32* seemed to work great on that setup and my new setup(different cam, newer heads).

74yellowmav

I'm running 34* to 6800 not really a curve just got it straight 34

TXoldskool

iTrader: (1)

hmmm.....and I had understood that the LSx motors preferred less timing then say a sbc?


oh and YES to the sticky!

schary

thanks for the thread here.. was having a run on issue with a new l92 carb engine with a bunch of cam.. i am running 20 at idle and ramping up to 31 to be conservative.. but it fixed all. .i am able to run the idle lower .. the AED carb really digs it and all problems solved except the law enforcement ones surely to come.. thank you

pairof69s

Really helpful info......as i'm about to fire up my stock Lq9 in a few months