last post I asked for advice about my truck shifting in and out of lockup.
91 3/4 chev 350
thanks to all the replies who advised me to adjust the t/a cable
After looking and trying to adjust I realized I have none ?
It is missing my truck has a crate installed and apparently no cable
installed on it
so anyway I will pursue this and see if I can't get this problem corrected
thank you once again
is your truck a 8600# 2500? if it is, crawl under it and count the
bolts on the tranny pan, if it's a squarish rectange with 16 bolts,
it's a 700R4(4L60) which requires a TV cable and if its kind of a
longish rectanglish shape with the rear of the pan sort of rounded off
with 17 bolts it's a 4l80E which doesn't require a TV cable.
check out these links:
700-r4/4l60 pan shape
4l80e pan shape
Ok... I think you are finding that the throttle body from the original
engine does not like the new engine. Such that it may be too small for the
engine (which looks like it flows more air and fuel then the original). So
what is happening is that as you give it gas and it tops out too soon. When
you hit the speed of 109 kph you basically are at almost full throttle. My
first response was to re-adjust the throttle position sensor on the throttle
body (model 220) but according to my shop manual it says it is
non-adjustable... If you can, take it back to the guys that installed the
engine and let it be their problem. If you can't (and others here agree
that the TPS is not adjustable) you may have to go to an aftermarket
throttle body that flows more cfm. This is definitely a throttle
body/computer issue not a transmission issue. I ask for the feelings on my
theory from the group. thanks
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