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Old 04-18-2019, 03:22 PM   #35
BigDooley77
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Join Date: Sep 2016
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Smile Re: 1977 GMC CCDW build

so it's taken longer than it ever should have but I found the culprit the stock settings on the controller had the 2-3 shift at 5,500rpm I moved it to 2800rpm shifted without issue. my homemade TPS worked just fine I did replace it with a accushift TPS because I was worried my homemade kit was intermittent or just poorly crafted but the symptoms continued. I had gone through so much because I figured my work would be the problem and not the computer programming since I used a base tune. but atleast I can drive it now I've waited so long for this day. So next on the agenda is rear tires then either paint and body work or chassis work I'm unsure yet I'm just happy to be driving it again.
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1977 GMC Sierra Classic CCDW. 454 worked 781s, 277/287, Lift .502/.501 LS 114, Dual plane intake, Dana 70 (4.10) and 4L80e (HD2 kit).

http://67-72chevytrucks.com/vboard/s...63#post8361863

Last edited by BigDooley77; 04-18-2019 at 03:40 PM.
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