I have a Lotus Esprit Turbo that boasts 330 HP and my 3.4L TDC feel VERY close, only without the slight turbo lag.Īs soon as I get the dyno done, which should be soon, I'll post the results. The Seat-O-the-pants-o-meter says I'm pretty darn close. In fact, after some tweaking, my motor went from an actual 215 HP to now, today, to 325 HP according to the 'math' but I have yet to Dyno it. All the numbers I read that are possible with TWEAKING the DOHC 3.4L are INCLUDED AS STOCK on the TDC 3.4L. It is TURLLY a high rev motor and revs to 7500 with no problems.

Yet again, the numbers I am hearing from the DOHC are FAR below the STOCK numbers of the TDC.Ģ10HP and 215 ft. I've been told time after time that a 3.4L DOHC is the very same motor as the 3.4L TDC but. Here, I am reading all this info on 3.4L motors. I know that we have talked about this before but each time I see a posting like this, I get more and more confused. just curious how much faster the 3800 is. I also do not expect it to be as fast as a 3800. I'd love for some hard numbers here like 0-60 and/or 1/4 mile, but seat of tha pants impressions are good too. I am also curious as to how this engine stacks up next to the 2.8L, and to other GM engines like the 3800 S2 or even a 3.4L with aluminum heads like in the current edition Grand Ams. Has anyone actually had one of these dyno'd in a Fiero? I know wheel power would be lower than these numbers, but the anount of power the engine produces in a Fiero I would imagine would be different than a truck for no other reason than it having a different intake/exhaust setup. I have seen other sources list the torque peak as high as 210 Lb-Ft. Now GM advertises these numbers for the the engine as an alternative replacement to the 2.8L in their S-Trucks. Since a lot of people have done the 3.4L conversion, I was wondering if anybody knows what its actual power output is in a Fiero? I know the 3.4L Crate Engine is listed at 160 HP and 194 Lb-Ft of Torque.

3.4l gm engine torque specs