I have a large task at hand, and I'm not sure I have the right idea, or any idea at all as far as that goes. I just rebuilt my tired old 350 in my camaro. It's a crate engine, but has many mods including a Holley Stealth Ram intake. The engine is a stock .030 rebuild. I have a CompCams 12-268-4 and Summit cast iron heads. Oh yea, Flowtech headers and Y. I found a calculator that takes into consideration all of the parameters and supposedly generates a spark table for you. It isn't exactly like the 8D table, but I can interpolate a little. I came up with this and wonder if it is decent, workable, or if it will even work.

41.84 41.84 39.02 37.97 37.97 37.97 37.97 35.86 35.86 35.86 35.86 35.86
41.84 41.84 39.02 37.97 37.97 37.97 37.97 35.16 35.16 35.16 35.16 35.16
41.84 41.84 39.02 36.91 36.91 36.91 36.91 34.10 34.10 34.10 34.10 34.10
41.84 41.84 40.08 36.91 35.16 35.16 35.16 34.10 34.10 34.10 34.10 34.10
41.84 41.84 40.08 36.91 35.16 35.16 35.16 34.10 34.10 34.10 34.10 34.10
40.08 40.08 36.91 35.86 35.16 34.10 34.10 34.10 34.10 34.10 34.10 34.10
34.10 34.10 34.10 31.99 29.88 29.88 29.88 29.88 29.88 29.88 29.88 29.88
31.99 31.99 31.99 28.83 28.48 28.48 28.48 28.48 28.48 28.48 28.48 28.48
29.88 29.88 28.13 27.07 27.07 27.07 27.07 27.07 27.07 27.07 27.07 27.07
27.07 27.07 26.02 26.02 26.02 24.96 24.96 24.96 24.96 24.96 24.96 24.96
24.96 24.96 24.96 24.96 24.96 24.96 24.96 24.96 24.96 24.96 24.96 24.96
23.91 23.91 23.91 23.91 23.91 23.91 23.91 23.91 23.91 23.91 23.91 23.91
22.85 22.85 22.85 22.85 22.85 22.85 22.85 22.85 22.85 22.85 22.85 22.85
21.09 21.09 21.09 21.09 21.09 21.09 21.09 21.09 21.09 21.09 21.09 21.09
20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04
20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04
20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04

Any help and constructive criticism would be most appreciated.

 

Load it up and make sure you have a really good knock sensor, with plenty of room to pull timing.

Unless somebody has your exact setup, any answer would only be a guess. You will have to do some easy runs and then some harder ones, to see if and where there is any knock.

Some places may need more SA , some less. The temperatures, CR, AFR, and octane will all make big differences.

I would start with a stock Table and see if there are any knock places, then compare to the new table.

Compare your new Table to say Arap (which is for aluminum heads and very aggessive).

47.11 47.11 47.11 45.00 40.08 39.02 37.97 35.16 35.16 35.16 35.16 35.16
47.11 47.11 47.11 45.00 40.08 39.02 37.97 33.05 33.05 33.05 33.05 30.94
47.11 47.11 47.11 45.00 40.08 39.02 37.97 30.94 27.07 27.07 27.07 27.07
47.11 47.11 47.11 45.00 40.08 39.02 37.97 30.94 26.02 23.91 23.91 23.91
47.11 47.11 47.11 46.06 41.84 41.13 37.97 30.94 26.02 22.85 22.85 22.85
48.16 48.16 48.16 47.11 47.11 43.95 43.95 37.97 29.88 27.07 24.96 22.85
48.16 48.16 48.16 47.11 47.11 46.06 43.95 41.13 35.86 30.94 27.07 24.96
48.16 48.16 48.16 47.11 47.11 46.06 43.95 41.84 36.91 30.94 28.13 27.07
48.16 48.16 48.16 47.11 46.06 45.00 43.95 41.13 37.97 30.94 28.13 26.02
46.06 46.06 46.06 46.06 46.06 43.95 41.13 41.13 39.02 28.83 24.96 23.91
43.95 43.95 43.95 43.95 41.84 41.13 37.97 34.10 31.99 28.83 24.96 23.91
41.13 41.13 41.13 41.13 40.08 39.02 37.97 35.16 34.10 28.13 22.85 21.09
29.88 34.81 40.08 40.08 40.08 37.97 35.86 31.99 29.88 26.02 22.15 20.04
20.04 29.88 40.08 37.97 35.86 34.10 34.10 28.13 26.02 23.91 20.04 20.04
20.04 20.04 29.88 29.88 29.88 29.88 27.07 26.02 23.91 20.04 20.04 20.04
20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04
20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04 20.04

Don't forget other SA adding tables and settings.

Good luck

 

All of the stock tables for use with iron heads have all of the advance at the map where my car idles. I guess I don't have a clue what I'm doing. I'll use the AUJP spark table and see what happens. Did any cars come with 350, SD tpi, iron heads, and manual transmission? I can't find it if it did. Should I start with a 305 manual bin and work from there? I hate frankensteins.

 

You could even use the table that your program generated. Just watch your knock counts and retard degrees. Adjust it from there.
I've gone between stock AUJP and ARAP spark tables on my toy and haven't really noticed too much of a difference.

 

Do your engines have aluminum heads??

 

If I were you I'd read through the stickies until it made sense. Then I'd load up SAUJP V3 (V4 has too much resolution when you are starting out). I'd get rid of the spark advance tables in there and plug in the stock AUJP spark table. Once you make a couple passes at the VE table then try to go for a drive while data logging. Once you have a good handle on the VE tables then you can try feeding a little more advance in the cruise areas to find the optimum. Just keep in mind that when you trip the knock sensor it is the area before the sensor recorded counts that might need attention. I would change the WOT timing to ramp up slower then stock and limit it at 26-28*. Then slowly feed in more timing and see where the engine makes best power and what the limit is for your combo. I have a HSR and my timing table looks fairly different then others I have seen for the HSR.

 

I've never even seen any bins that were customized for the stealth ram, but I'd love to.

 

The cam and heads make the big spark advance difference not the intake.

Same intake can be on a stock or a 10 sec motor, big difference in the bins.

That is why there are no "tuned to intake" customized bins.

 

My setup is completely different then yours. I have a 408 with aluminum heads (w/tight quench), 10.5:1 comp, and a mild cam. My stall converter is also tight so my setup doesn't tolerate lots of timing like I've seen with other HSR users. There is nothing in my bin that is stealthram specific. My MAT table only works for me and my cold air setup it was baselined at about 50*. I used Glen's modified MAT table but for my setup it was still lean at higher air temps and a little rich at lower temps. Do you have a WB O2 sensor or at the very least a heated one? Also when you plan to tune set aside the whole day. I did it 2 hours here and there when one day was 50 and the next was 70. That makes it harder to nail down a good VE table. One of the biggest changes for me was the O2 constants. I am not sure if your setup will benefit from that but I went from idle at 45kpa to 32kpa.

 

The O2 constants you speak of may help me quite a bit. I still have a pretty mild cam as well, but mine idles around 52Kpa and bounces a little.

 

Flatten the SA right at the idle spot, varying SA will vary your idle speed.

A 54 kpa is only 14 in hg of vacuum that is on the low side.

Your cam is not that mild (overlap high) or you have a vacuum leak.

At 54 kpa your vacuum range is only 40 % of the full range of your map sensor, so a stock ECM/bin thinks that you are under a load, all the time.

When in reality, you are just idling, under more load ECM gives more fuel, false load = rich mixture.

 

I've always considered 224/230 a pretty mild cam. Should I get more vacuum from that cam? My cheapo vac. guage shows between 13 and 14 at idle, but it jumps around. I had a stock TPI before with a 212/212. I didn't have a vac. guage than, but it still seemed to jump around with pretty rough idle. Could it be bad rings, or screwed up injectors? I thought my annoyances were because of bad SA tables, but maybe I have a bigger problem. I put new gaskets on when I installed the stealth ram, and I can't find any vacuum leaks around it. I've plugged every vacuum port as well. Except for the MAP which by that chart is showing pretty close to what my vac. guage shows.