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  1. V

    Headers, headers, HEADERS??

    I have GREAT luck with cheap headers. Last set on a Blazer did not need touched until the Mexico salt air rusted them clean through after nearly 20 years. I saw cut the flanges in two between each cylinder. Then I used TWO gaskets coated with silicone. Re-tighten twice after warm up-->...
  2. V

    Headers, headers, HEADERS??

    I don't know why, but the factory OEM's were the last one to get the "memo" about how much a good exhaust boosts performance, if they ever got it at all. Someone will say "longevity". My last set of headers was the very cheapest I could find that I put on my 1980 big block Blazer. It was my...
  3. V

    High output alternator

    Ok guys, I think I finally got the scoop on this, after hours of research. I am somewhat at a loss as to why this info was difficult to find. The TBI trucks sometimes seem like they're the "red-headed stepchild" and quite neglected regarding available info. Not all of us have Vortecs, even if...
  4. V

    AD244 ALTERNATOR UPGRADE--> HELP!!??

    Ok guys, I think I finally got the scoop on this, after hours of research. I am somewhat at a loss as to why this info was difficult to find. The TBI trucks sometimes seem like they're the "red-headed stepchild" and quite neglected regarding available info. Not all of us have Vortecs, even if...
  5. V

    AD244 ALTERNATOR UPGRADE--> HELP!!??

    Wow! Nothing?? :~( Vettepilot
  6. V

    High output alternator

    Really? Nobody? :~( Vettepilot
  7. V

    High output alternator

    Guys, is there two different mounting bolt patterns for AD244 alternators? I am trying to put an AD244 145 amp alternator on my 1994 K1500 GMC 5.7. My understanding was that there's only a minor mismatch that could be worked with on one of the two mounting bolt holes. Many posts I have read...
  8. V

    AD244 ALTERNATOR UPGRADE--> HELP!!??

    Hey guys, 1994 K1500 GMC 5.7 Z-71 Getting rid of the worthless CS130 alternator and upgrading to an AD244 for all the obvious reasons. I've bought a genuine GM (supposedly) AD244, # GM 15279852, 145 amp alternator that supposedly fits GM vehicles from 1996 to 2005. I have about 4 various...
  9. V

    1995 Tbi 350. Runs for 30 seconds then dies. Feels rough.

    It's a bit of a pain to test fuel pressure on TBI, so it's often not done. But with any EFI, fuel pressure is critical to check when trouble shooting. One note though. The fitting they sell to hook up a pressure gauge that swivels is very prone to leaking and that is super dangerous. I...
  10. V

    1995 Tbi 350. Runs for 30 seconds then dies. Feels rough.

    Just a couple "off the wall" interjections here. Doesn't this have an "upside down" sensor? Actually, I am referring to the crash engine turn off circuit. If it doesn't get oil pressure info, the vehicle will start, but then stop. What is the fuel pressure doing through all this?? Vitally...
  11. V

    "POSI-TRACTION questions??

    Wow. Great info and great news! Thanks guys!! BTW, the way I rigged up my test, it was safe. No "Safety Cops" were injured in the performance of this test. ;~) Thanks again! Vettepilot
  12. V

    "POSI-TRACTION questions??

    1994 GMC K1500 5.7 w/auto trans. We are in the process of fixing it up and haven't driven it much. It is supposed to have "Posi-traction" according to the option list. However, I happened to have the back end jacked up today, and when I turned one back wheel, the other one turned BACKWARDS...
  13. V

    L98 into K1500--> HEADS?

    Yeah, I believe the 88's got the "D" port exhaust, so my 87's are probably not. I don't have any idea how much difference there is with them. ??? Vettepilot
  14. V

    L98 into K1500--> HEADS?

    Yeah, and who needs the heart break of investing bucks, and more importantly a bunch of labor into a set of heads only to have them crack?? Cracked heads seem to be a rather frequent problem with SBC in my experience, and from what I've heard, Vortecs particularly so. Vettepilot
  15. V

    L98 into K1500--> HEADS?

    Lots of good feedback here guys. Thanks. It's all interesting, so if anyone has more, keep it coming. While the Vortecs have always intrigued me, the crack prone factor always turned me off, plus I just can't see going backwards to cast iron instead of aluminum. Has anyone done a recent or...
  16. V

    Headers, headers, HEADERS??

    Basically, headers help most anything, if the rest of the exhaust is done right as well. On lower performance builds, the gains might be modest, but they exist. The sound is a nice bonus. Getting the exhaust out of the engine efficiently is never a bad thing, and doing it "better" is just a...
  17. V

    L98 into K1500--> HEADS?

    If the L98 head was rather equal to the vaunted Vortecs, I would probably fix them and run them. I'm not looking for high rpm horsepower on this one. Got other stuff for that... Vettepilot
  18. V

    L98 into K1500--> HEADS?

    The Vette. It got run up to 280+ once. Then I bought it, fixed the radiator and have put a few thousand miles on it. While it passes a pressure test and runs cool now, it has always used some water. I figure there's a small crack somewhere. But being aluminum, if that's true it could be...
  19. V

    L98 into K1500--> HEADS?

    Hey guys. 1994 GMC K1500 w/5.7 I'm fixing up. Use will be everyday. Sometimes spirited driving, some weekend offroad, but nothing very intense. Just "hold my beer" fun. So I am going to replace the tired old 350 with a 1987 Corvette engine. I will freshen up the Vette engine first, though...
  20. V

    Headers, headers, HEADERS??

    Ok, Summit has answered and confirmed that their Hedman 69440 will fit my application. I hope that they are correct. Not sure where the negative info came from... Thanks, Vettepilot
  21. V

    Headers, headers, HEADERS??

    Yeah, got ya on the Vortec. And something like that is no big deal. For example, I am going to install another O2 sensor bung anyway for my wideband AFR tuner. The question I believe lies in fitment with the independent suspension 4 wheel drive and torsion bars. Header mfgs haven't...
  22. V

    Headers, headers, HEADERS??

    Thanks. I am hoping to hear from someone that has a 1994 4wd exactly like mine. There seems to be some confusion on this, as I've heard the headers for 1996 won't fit the 1994 4x4. Hoping to learn the whole scoop here. I saw one YouTube video where he showed inteference with the diff plus...
  23. V

    Headers, headers, HEADERS??

    Well, I would be surprised if this has not been covered, likely many times, but I can't find definitive info on it, plus sometimes get chastised for posting in older threads. So, here goes: 1994 GMC K1500 4x4 with 5.7 and 4L60e. Do long tube headers fit?? I see and hear conflicting info on...
  24. V

    96-98 Vortec Alternator Upgrade AD244

    Hey guys, interesting thread. I did read all 19 pages, but to verify: I want to go to an AD244 alternator on my 1994 K1500 5.7. Questions: 1. Will bracket mods be necessary or not?? 2. Will my 1994 plug be correct, or do I need a different plug, or pin movement?? 3. My present belt is a...
  25. V

    Whining alternator on my ‘94

    Jeez! I am sure hundreds of people have upgraded their charging systems on these trucks, yet no advice here??? :~( Vettepilot

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