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Old 01-07-2020, 08:44 PM   #32
Pvmt-Pndr
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Join Date: Jun 2017
Location: Temperance Michigan
Posts: 375
Re: 1989 GMC 6000 Pickup/Toy Conversion

Clicking through this thread makes me want to get my truck up and driving the way I want asap. Have you checked your timing? I found playing with my timing a little made a big difference in start up and shut down on my truck running the cheap stuff.i assume your truck is already hei stock. Most of what I read the tall decks like 8 degrees of timing and that's on the high side. For some reason my truck likes (427) 10 degrees better. I also only have about 2 street miles on her since I went through the engine. My wife has a 366 and I don't recall what hers is at, she's also running an edelbrock (not a avs2) and has hei.
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