Recent content by Tremek

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    454 knock - looking for suggestions

    Craig85: Thanks, yes it is pretty clean, I feel a little bad about using it as the donor since I know there are guys out there that love these GMT400 2500s, but the price was right and its heart (sort of) shall soldier on for this noble cause.
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    454 knock - looking for suggestions

    So, quick update - Sunday resulted in an interesting development: Found a donor motor! In a donor truck! '99 Suburban 2500 LT with 216k miles on the motor, and 40k on a new 4L80e - and a rod knock. OK fine, let's see if we can baby it home. It briefly moved under its own power: ... until...
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    454 knock - looking for suggestions

    So if I understand correctly mk IV heads can go on a Gen VI block, but not the other way around? What would the advantage be of taking my heads to the Gen VI truck? Also, why 96-01? Looks like the 4L80e started being behind the 454 in '91 if my searching is right?
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    454 knock - looking for suggestions

    With my truck, my dad told me he had either Valvoline 5w-30 or 10w-30 run through it since he got the truck in 1983. With that said I don't know if older Valvoline had appropriate ZDDP additives or not; he claims he didn't add additives. With that said, for a while he kept records: To rule...
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    454 knock - looking for suggestions

    Hi guys, in my intro thread I had posted about the 1977 GMC C25 Sierra Classic my dad had given me last fall; 77,000 miles and still on its original engine and transmission. The truck had sat more or less for the past 4 years, and as my buddy and I attempted to revive it this past week we...
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    77 C20

    Hi Eric, I see we have both the same year truck, with I think the same drivetrain, and are both in CO! I'm down in Parker but will be moving up to Centennial shortly. :) Very interested to keep tabs on what you end up doing with your truck - do you have any pics to share?
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