is my 350 underpowered for my C20?

[geezer#99]

First thing comes to my mind is timing.
What's your initial set at?

[cleansquare]

Originally Posted by geezer#99

First thing comes to my mind is timing.
What's your initial set at?

To be honest geezer I don't remember its something I'd have to check.

Bt good news...I think I solved 90% of my problem. This tcu uses a carb mounted tps signal, it can't be less than .1V at idle and more than 4.9V WOT. Well, I never could get mine right and been driving it almost a year with neck snapping shifts, no downshifting at WOT, and trans shifting thru all 4 gears by 35 mph.

No wonder my 350 felt like a turd. It had to accelerate to 70 in overdrive from 35 mph and wasn't using any of gears 1, 2 or 3 for acceleration, just going right thru them.

Once the tps was set correctly with a voltmeter, I was able to get out the manual and go thru all the settings and change them to my liking while driving on the backroads. And since the tps was right it actually worked.

I moved my line pressure down and now the truck shifte lime a.cadillac unless I get on it.

I moved my max shift speed up to around 4200rpms and now when I punch it the truck downshifts and scoots! It was set at 2500 rpm, so as soon as it downshifted into 3rd, it hit the 2500 mark and shifted back Into 4th. That's why it never worked.

Also, the truck now carries shift points way further out, providing MUCH better acceleration. Right now its shifting into OD at about 55mph, but I can bring it even further if I want to.

As lf this moment I am VERY happy with this truck. Lol I can believe I waited almost a year to finally call tci and make then help me!