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Join Date: Jan 2005
Location: Minneapolis
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Estimated power of 3.4L?

I have the opportunity to acquire this motor

What kind of power numbers should this combo put out?

"3.4L engine: 930 case/crank/rods, ported and polished factory heads (twin-plug), Crane racing springs, large stainless valves, bored factory NiCom coated cylinders, Webcam high torque racing cams similar to G-80 grind, Ross 11:1 pistons, Electromotive twin-plug crankfire ignition, Weber 46 IDA3C carbs, GHL Motorsports s.s headers 1-3/4" O.D. with GHL s.s 2 in 2 out racing muffler, balanced and blueprinted"

That's all I know for now......any good guesses? 300hp?

What is this engine worth (33K on motor, ZERO miles on re-seal)? $12000?



Thanks,

E
Old 02-15-2005, 03:43 PM
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Do a search under RDane. He built a 3.4 CIS motor. I believe it put out about 260 hp. If you factor in Webers, hot cam, hi-comp pistons, etc., sure - I bet close to 300 hp is possible.

I would think $12K is a good deal considering the work that would go into building a motor like that.

Very nice, BTW.
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Old 02-15-2005, 03:49 PM
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Originally posted by dd74
I would think $12K is a good deal considering the work that would go into building a motor like that.
You would think that, until you learned who built the motor. See the crossposted thread in the 911 forum.

IMHO, the bored and plated cylinders and Ross pistons are a cheap alternative to the Mahle Sport pieces. I wouldn't expect the same longevity from this build as using the factory stuff.

TT
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Old 02-16-2005, 09:20 AM
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Old 02-16-2005, 11:04 AM
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I have just finished tuning a 3.2 with Autronic, triple throttle bodies, twin plug heads, 11:1 compression, this engine showed 280hp at the flywheel. The power curve was very jaggered though, indicating a lack of traction,which would have reduced the indicated power. In reality it is probably closer to 300hp! Considering this a 3.4 with bigger cams, should be closer to 330-340hp!!
Regards Mike
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Old 02-17-2005, 03:49 AM
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