different C4 causing slow acceleration?

phoenix02

Well-known member
So I was just thinking and realized something that the PO told me- the tranny that they rebuilt to drop in before I got the car was out of a truck. I don't know what truck, what year, etc, but he said they had to remove a counterweight, or something to get it to work.

Did the truck C4s have different ratios? I'm running the stock 2.8 rear with the stock wheels, 200, and just swapped out to a 1940, but am still having slow acceleration and no real bottom end torque out of the engine. I'm kinda grasping at straws here- it's driveable now as-is, so far, but there's no acceleration. Once I get over about 50MPH, it pulls up quickly to 90 and feels like she could go higher without effort.

Something else- I have a '75 Benz 300D that had the same problem- I adjusted the valves and she opened wide up in comparison. Do these engines suffer from too-tight valve clearance issues?

Trans? Cam? Carb? Valvetrain? Operator?

Any ideas?
 
I still think there's something weird going on. Oh, and the pump is 4-6 PSI I believe. I'm trying to figure out why you can't set your idle...
 
Ya know, I think I figured it out- I betcha my car is one of the rare drag pack variants. Right now it's in park mode so nobody would suspect and try to steal it- if I can find the hidden switch, it'll morph into an acid dipped 2 door futura with aluminum body pannels and a cammer 427. :lol:


...It's, ya know, a good guess, is all I'm sayin'...



(If we can't figure out the problem, I'm gonna start looking for a switch... ;))
 
New torque converter has a lower stall speed?

Someone moved your distributor?

Trans line pressure set too high? (excessive pump drag)
 
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