LT1-LT4 Modifications 1993-97 Gen II Small Block V8

24x Timing

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Old May 26, 2020 | 05:07 PM
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Default 24x Timing

This is my current timing table in tune. Could someone take a look at it and offer up some improvement suggestions. TIA
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Old May 27, 2020 | 10:35 AM
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Originally Posted by sspeedta
This is my current timing table in tune. Could someone take a look at it and offer up some improvement suggestions. TIA
Need info on the engine, M6 or A4 ect
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Old May 27, 2020 | 12:36 PM
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LT1, stock bottom, LE2 heads, 226/235 110lsa cam, 3200 stall, A4, 3.73 rear.
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Old May 27, 2020 | 01:04 PM
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Originally Posted by sspeedta
LT1, stock bottom, LE2 heads, 226/235 110lsa cam, 3200 stall, A4, 3.73 rear.
you're running 4-5* too much timing in your 4-7000 wot range, and 2-3* thru out different kpa vs rpm range
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Old May 27, 2020 | 01:43 PM
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Ok, I'll make the changes and see how it goes.

Thanks
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Old May 27, 2020 | 02:27 PM
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Does this look a bit better?


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Old May 27, 2020 | 03:04 PM
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Originally Posted by sspeedta
Does this look a bit better?

No, what are you basing your 100 KPA at what value?
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Old May 27, 2020 | 03:40 PM
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My WOT KPA only goes up to 85. I'm at 3500ft altitude.
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Old May 28, 2020 | 11:27 PM
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Originally Posted by sspeedta
My WOT KPA only goes up to 85. I'm at 3500ft altitude.
You need to look at GMS/CYL in your datalog to figure out where the timing advance curve sits. It will actually cover somewhat of a U-shape. Lower value at lower rpm, peak out near peak torque and drop again at higher rpm. My moded L31 was in the 0.76 range at its highest. My current 383 runs around 0.96 range. It changes based off the cylinder displacement, accurate Injector sizing and MAF/VE table values.

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Old May 29, 2020 | 05:48 PM
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Here is what my curve looks like currently



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Old May 29, 2020 | 08:12 PM
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Are we sharing timing meow?



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Old May 31, 2020 | 04:15 PM
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This is what I got so far.


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Old May 31, 2020 | 05:55 PM
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Nice to see this thread. I just did the torqhead 24x swap on mine and got hp tuners and was wondering the same thing. Learning more ever day.
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Old May 31, 2020 | 09:11 PM
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Originally Posted by transbird95
Nice to see this thread. I just did the torqhead 24x swap on mine and got hp tuners and was wondering the same thing. Learning more ever day.
it’s a great kit. Was out buzzing my old LT1 to 7300 in this nice weather. Torqhead 24x changed the whole driving experience of the car with proper tuning.
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Old Jun 2, 2020 | 11:16 AM
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Originally Posted by sspeedta
This is what I got so far.

That looks better
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Old Feb 5, 2023 | 03:57 PM
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Default timing 24x

Originally Posted by sspeedta
This is what I got so far.

this to much timing i have 24x with ls1 bcm and my car has 410whp and im at 28
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Old Feb 5, 2023 | 07:07 PM
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Originally Posted by othman1993
this to much timing i have 24x with ls1 bcm and my car has 410whp and im at 28
My 11:1 383 in my van makes peak power at 31 on 93 and 34 on E85. On 93 it made like 2 hp less at 29, so I run it at 29.
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Old Feb 13, 2023 | 07:13 PM
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I`m sharing my tune for any 24 X guys looking for any segments that might aid in their swap.
Build was a OE block splayed billet cap line bored , square decked >005 in the hole flat top mahle, cometic .035 MLS, eagle 4340 internal 6 inch eagle h beams, rings gapped for N/A, moroso 6 qt road course pan, melling shark tooth pump, Torq head 24 x, mech water pump, d585 coils, S/C 3800 injectors (33 or 36 lb per hour?), stock LT1 fuel pump 43.5 psi , 11.3 383 AIS 215 Trick flows, Lloyd Elliot 223/231 114 .595/.595 w/ 1.6 comp cams magnum rockers, LE ported intake, 52MM TB. 1 7/8 step to 1.75 OBX w/ offroad Y .. T56 / 3.42 285/35 18`s square SLP dual dual rear 98-02 cat back. this car made 472 hp at the tire at 5200 and made more than 500 ft lbs of torque from 2500-5000 on a stingy dyno...really strong car....I went directly into a c6 Z06 from this car and the camaro had more than this 2012 12k mile z06 has stock for sure





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Old Feb 14, 2023 | 03:18 PM
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When I think about when I am on my laptop, I will share my P59 tune. It is for a 4x crank sensor. Always have the option of using an OBD2 cover, 4x reluctor, and balancer flange using the stock opti for distributor duties without using the encoder wheel. The 0411 or P59 runs better than the stock PCM even in batch fire without using a cam sensor.
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Old Feb 16, 2023 | 09:14 AM
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I run an Efi Conn 24X in my 396 LT1 swapped ´82 El Camino
I think I have been running too much timing according to the tables submitted. Glad this was posted. I will give it a try.
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