Hey guys--
I currently have a 66 C4 with the matching valve body. I am debating switching valve bodies because the current one does not allow the car to be held in second gear. Does the 68 and up valve body allow the car to be held in 1st and 2nd, or just 1st? Is that valve body completely interchangable with the older style C4.
Also, I am not able to get the C4 to hold the gears much past 4400 unless I hold it in there manually (1st only). I have tried adjusting the modulator, but that didn't work at all, only made the shift quality crappy. I am running the C4 behind my 331, with a 2400 rpm converter in there. The engine should be able to wind up to about 6500 without any problems at all, and I have hit around 5500-6000 holding it in manually. Is there any way to convince the tranny to stay in the gears longer without manually holding it there?
Thanks
Dave
I currently have a 66 C4 with the matching valve body. I am debating switching valve bodies because the current one does not allow the car to be held in second gear. Does the 68 and up valve body allow the car to be held in 1st and 2nd, or just 1st? Is that valve body completely interchangable with the older style C4.
Also, I am not able to get the C4 to hold the gears much past 4400 unless I hold it in there manually (1st only). I have tried adjusting the modulator, but that didn't work at all, only made the shift quality crappy. I am running the C4 behind my 331, with a 2400 rpm converter in there. The engine should be able to wind up to about 6500 without any problems at all, and I have hit around 5500-6000 holding it in manually. Is there any way to convince the tranny to stay in the gears longer without manually holding it there?
Thanks
Dave