Will a 411 PCM make that much of a difference?
Nov 11, 2012 | 10:23 PM
#1
Thread Starter
Staging Lane
Joined: Sep 2012
Posts: 52
Likes: 0
From: McKinney, Texas
Will a 411 PCM make that much of a difference?
I am installing an L29 454/4L80E from a '98 Suburban into my '96 Sierra halfie. (For those of you who read my other thread, I sold the 454/5spd one ton I was going to use because I found this one, that way I wouldn't have to hunt down a trans). I will be doing a full swap, harness, PCM, cooling system (even though I'm already running a 4-core), and all. Even the Hydroboost and driveshaft.
This is my daily. The only for sure upgrades will be longtubes with a dual in/out 50 series Flowmaster, and I MIGHT do a mild marine cam if I find a takeout for cheap enough, though the stock setup is enough for what I want to do with it. (I have a '79 Trans Am for a toy, so I'm not real concerned with fully hotrodding this thing).
My question is - Is doing the 411 swap worth it for what I'm doing with it? Or should I just get my BlackBox tuned? I know it sucks for high performance and swapping PCMs is preferred on the L30 and L31, but since I'll rarely get into the 4000-5000 RPM range, is it necessary to deal with repinning and reprogramming the 411? I have an extra BlackBox from another '98 454/4L80E truck, and can have it sent in and tuned before I do the swap, that way it's ready to go. The Suburban is also a California truck with the A.I.R system, will this affect anything as far as harness/computer when I delete it? I wouldn't think so, but you never know.
Thanks in advance, ya'll are always helpful and I look forward to any opinions, but as a disclaimer, please noone suggest an LS swap, I always seem to get that. I would love a 6.0, but I paid $500 for this Suburban and it runs perfectly and quietly, no ticks or rattles. Hell, there isn't even any crud on the oil pan! Thanks again
This is my daily. The only for sure upgrades will be longtubes with a dual in/out 50 series Flowmaster, and I MIGHT do a mild marine cam if I find a takeout for cheap enough, though the stock setup is enough for what I want to do with it. (I have a '79 Trans Am for a toy, so I'm not real concerned with fully hotrodding this thing).
My question is - Is doing the 411 swap worth it for what I'm doing with it? Or should I just get my BlackBox tuned? I know it sucks for high performance and swapping PCMs is preferred on the L30 and L31, but since I'll rarely get into the 4000-5000 RPM range, is it necessary to deal with repinning and reprogramming the 411? I have an extra BlackBox from another '98 454/4L80E truck, and can have it sent in and tuned before I do the swap, that way it's ready to go. The Suburban is also a California truck with the A.I.R system, will this affect anything as far as harness/computer when I delete it? I wouldn't think so, but you never know.
Thanks in advance, ya'll are always helpful and I look forward to any opinions, but as a disclaimer, please noone suggest an LS swap, I always seem to get that. I would love a 6.0, but I paid $500 for this Suburban and it runs perfectly and quietly, no ticks or rattles. Hell, there isn't even any crud on the oil pan! Thanks again
Nov 30, 2012 | 12:04 AM
#5
I agree when I swapped in the 411 on my 99 it was all around smoother and a better pcm I thought plus back then it had a lot more tuning options. But if I ever own another one a 411 pcm will be one of the first mods I do. Plus even if you do not buy the adapters it is not a hard process to do.
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