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  1. Rock Hard Concrete

    TBI 454 Misfire

    My 1992 K3500 454 has a terrible misfire. It is worst on cold start up, but it is still there when warm. All spark components have been replaced at least once. The misfire seems electrical and not air/fuel related. I am no expert, I make that assumption because the problem is intermittent, and...
  2. Rock Hard Concrete

    Thought she was stock, guess not?

    I tend to spread information based on my own experiences. I dont like heresay which is why I usually will only give my 2 cents if it is something I have had my own hands in. Now heres the problem, I base my responses on the work I have done on my rig, which I assume before I bought it it was...
  3. Rock Hard Concrete

    TBI 350 Does Have a Rev Limiter

    Probably not the most relevant topic, but I thought Id let yall know that the tbi system does have a rev limiter at least on the 350. It hits at 5200 rpm, which is probably why no one knew, I must be the only one revving my poor toilet heads that high.
  4. Rock Hard Concrete

    2wd Oil Line Delete

    Most everything I read says I need an adapter to get rid of my oil cooler lines. I understand it is supposed to bolt in place of the stock o e. Heres my problem, I went to napa to buy one and he says that I wont need it and that the stock one comes off and there is already a threaded piece in...
  5. Rock Hard Concrete

    My Street Truck

    I have a build thread so I wont bore yall with the deets.
  6. Rock Hard Concrete

    1990 c1500 Street Truck

    GMC Sierra SLE C1500 Reg. Cab Long Bed. Bought late 2016 with 73,000 miles. 1 previous owner, purchased from dealership that sold it brand new 26 years earlier, all service documents intact. Came with canopy, hitch, running boards and toolbox...
  7. Rock Hard Concrete

    Whine When Radio On

    I have this funny issue with my truck; when I turn the radio on I get this high pitched whine out of the speakers that matches the engine revs so it is really annoying. I think I read up before that someone had a similar issue and it ended up being a worn distributor causing interference...
  8. Rock Hard Concrete

    Cheap and Easy Throttle Response Mods

    Hello all I believe this may be my first post here so might be kinda long but here goes. Got me a '90 Sierra SLE with a 350 and only 73,000 original miles a few months back. One owner, very well taken care of, dealer documented service, etc. Stock as hell and kinds gutless unless ran high into...
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