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

need help with tunning...(timming)

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Old Jun 16, 2013 | 11:11 AM
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unioncarpenter84's Avatar
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Default need help with tunning...(timming)

alright guys im going to order the tuner cats program..

the reason why about a year and half ago i got a mail order tune from pcm4less and the issue was we didnt kno the compression of my 355 from previous owner.

pcm4less said it should be good but im getting ready to run 100 shot but wana make sure that the car is dailed in right.

is there a way i can get the timming tables loaded to here for u guys to view them and tell me if their good or not??

i got a lt1 scanmaster could that be any help also
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Old Jun 16, 2013 | 11:48 AM
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Anyone
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Old Jun 16, 2013 | 11:58 AM
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I would run something like the Mallory 685 so you only pull timing when on the jug and that way also have a spark based rev limiter and window switch.

If you are happy with the current tune leave that alone and just use the aftermarket box for retard.
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Old Jun 16, 2013 | 12:31 PM
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Okay so ur thinking the trimming is good now?
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Old Jun 16, 2013 | 12:32 PM
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Timming
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Old Jun 16, 2013 | 12:37 PM
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Tuning* Timing*
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Old Jun 16, 2013 | 12:47 PM
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Ha ya tuning
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Old Jun 16, 2013 | 02:22 PM
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I have little faith in Herter after the problems I had with him on a mild setup and problems I have helped others overcome from him.

Notice I said.........
If you are happy with the current tune..............
IMO tuning tweaks for nitrous should be done only when on the jug, use the fuel jets and if standalone fueling fuel pressure to tune the fuel and an aftermarket ignition box to handle spark retard rather than hurting NA performance all the time for those occassions you will spray.

If you had a stock shortblock I would encourage you to consider more than a 100shot too BUT on a "built" shortblock observation says always assume they are weaker than stock **** unless there is strong evidence to the contrary and if the previous owner didn't give you a lot of details like compression IMO it is safer to assume you have **** than to think it is any better than stock. I know that sounds harsh, but spend some time around here and you will see just how many "built" engines are junk and how many machineshops are completely incompetent and ruin the machining even if the parts used are any good.
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Old Jun 16, 2013 | 02:48 PM
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well he gave me all paper work as on the block getting bored machine work and all then them assembling the rotating assembly and all have everyslip and pics of whats in it.

just worried bout pcm for less with their timing could i load timing charts for u to view them
or is there another way
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Old Jun 18, 2013 | 08:41 PM
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export the table to a microsoft excel spreadsheet, i think you can upload those to the forum
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Old Jun 20, 2013 | 11:32 AM
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The tables don't mean much without datalogs to review. How do you know your motor is good for 34* @ WOT when you haven't logged it
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