I have a 2200 and am going to boost but no matter what I want to increase shift points by getting my computer remapped but has anyone done it even with a manual trans is there any more power in the higher rpm range???
RedCavi2008
there isn't much more power up top without cams or headwork
Good question, go try it and find out, let us know when you need help with the Ecoswap.
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The stock rev limiter for the 2.2L/2200 is 6000 rpm. The shift points on the 3 speed (3T40/TH125C) are mechanically controled, you'ld need a shift kit and/or tuning using springs in the governor. The shift points in the 4 speed (4T40E) are controled by the PCM and needs B&M ShiftPlus(mostly firmness) or HPT to adjust the shift points and shift firmness.
Edit: As stated before, there is no more power to be had above the stock rev limiter, without head and cam mods.
Edited 1 time(s). Last edited Tuesday, April 10, 2007 2:40 AM
Usually the maximum rpm occurs just before the kaboom.
Look for the OHV buildup guide. GM gives recommendations on crank modifications if you plan to turn it past 7500 for any length of time. The main enhancement is the addition of counterweights in the center of the crank.
-->Slow
So it would help even if I got my head ported and polished though wouldn't it??? Because that would be a !@#$% if I had to pull the block off to cam it then I would just assume go Eco, (Which would be extremely sweet anyhow!!!!)
RedCavi2008
Port work will increase the power that you're already making at pretty much any given RPM, but it really won't increase your ability to rev the motor. The cam profile is pretty much the biggest thing controlling where an engine makes its power, without changing that, you can't change the shape of your powerband, you can only bring it up (or down if the porting is done incorrectly). Now, an ecotec swap is in option, an for some people very may well be a better one. But pulling the OHV and changing the cam is not nearly as much work or money as a full ecotec swap. The other thing is that electrically speaking, its easy to make a 2200 rev higher... all you have to do is either use HPT to raise the rev limiter and extend timing advance into higher rpms, or run a standalone ECU of some sort. The problem is that the valvetrain simply wasn't designed to rev any higher than stock (maybe you can do 6500 intermittently without having problems, but doubtfully any higher than that). So you really need improved valve springs/keepers/locks/etc as well as (most likely) aftermarket lifters. Of course that last part is up for some debate since I only really know of one person having a lot of lifter problems and his is an older 2.2 not a 2200. I'm a long time proponent of the OHV, but if you really want to make power, you're either boosting it (within reason) or building a motor and head.
Arrival Blue 04 LS Sport
Eco
Turbo
Megasquirt
'Nuff said
The honest truth, finally.
