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  1. M

    Short block anyone have experience with these

    https://smedingperformance.com/collections/chevy-engines/products/383-short-block?variant=30746600505402
  2. M

    Vortec mercruiser marine tbi intake questions

    Looking at a mercruiser marine tbi intake. It is complete with throttle body and injectors no map sensor. I think l31maxexpress said they were 2 inch throttle bodies on them but can't find the post. What do they have for injectors and what pressure do they run? I'm trying to run a 95 k2500 back...
  3. M

    Marine motor

    Well this is depressing. This motor ran strong than say for a long time. It would rock the dry dock when you blips the throttle. 4 bolt windage tray, knife edged steel crank. It cracked below the deck surface and this is what I found when I opened it up
  4. M

    Cheep build advice

    Wife told me to buy parts. She's mad now but hasn't revoked permission lol. Truck 95 k2500 sclb 5.7 4l80 410 gears and 245/75/16. It blew a head gasket and torched the block and head. 130k mile truck. It also has the low stall converter. 14 bolt sf axle. I'm using it to haul stuff, pull a car...
  5. M

    Moon roof

    Has anyone cut a moon roof out of a gmt800 and put it into a gmt400?
  6. M

    Summit bargain bin

    Killing time at summit the other day. They had a set of Doug thorly try y headers for a bbc. They were for a square body and i need a set for a gmt400. I left without them but think I'm going to go get them. They would work nicely in my cab and chassis with a 366 tall deck. Ceramic coated for...
  7. M

    Lt1 engine swap questions

    Found a f body lt1 motor. It broke a rod at the big end. Didn't hurt the motor. They replaced it with a corvette motor. Block heads cam pistons all good. Comes with the y body accessory drive. I know the lt1 has light weight pistons but are the rods the same as vortec l31 rods? If I put this...
  8. M

    Computer dyno simulation

    What's everyone using for computer dyno simulation?
  9. M

    Hp tuner efi live license question

    I've got the stuff to use pcm hackers and ls Droid. Do the systems in question in title lisence by vin number? I under stand both are great with slight differences. If you have an unlimited lisence for either do the still require vin or are you in kinda the wild west. Reason I ask is I've seen...
  10. M

    95 k2500 5.7 4l80 tbi build advice

    I've had this truck for almost 20 years. It owes me nothing even though I've only put about 9k miles on it. About a year after I bought it it started running worse and worse. I parked it and just decided to fix it. Drove it around to verify brakes and trans were good and pulled motor out. Blown...
  11. M

    4l80 stock stall speed

    Pulled the motor on my 95 k2500 5.7 4l80. The converter has a sticker on it. 4640ls. Any idea the stall speed?
  12. M

    Tbi computer questions

    Trying to figure out what I need to tune these tbi trucks. 95 k2500 5.7 4l80 7727. Looking through the pile of parts I've got a stack of 7747 computers and complete wire harnesses from trucks i parted out. I parted 2 g30 vans with 5.7 4l80 combos. One is a 7060 the other is a 7747. I didn't know...
  13. M

    Opinion on these headers for a tbi 5.7 in 95 k2500 pickup

    Any opinions on these...
  14. M

    97 k2500 l29 5 speed build need advice

    Friend ordered truck new. 3/4 4×4 nv4500 454 373 gears with g80 cruise tilt no air. He plowed snow with it its whole life. Frame is ugly under the cab and has been plated with 3 inch 1/4 wall angle iron. I got it with a slipping clutch for$1100. Was going to put a clutch in it and drive it but...
  15. M

    Stupid things i do

    My oldest graduated as a welder. My wife thought we should go from mi to Seattle for the event. I was working temp from the first of the year in the oil field and was in Arizona doing transfers covering a pipeline that was down. I found a class a motor home in mi and sent her to look at it. 1987...
  16. M

    5.7 vortec mpg improvements with exhaust

    Ok it's been a few years since I drove this truck and it has issues with low compression on center cylinder on each bank but I've put 200k miles on it like that. The exhaust broke right below the manifold flange so I tossed it an in the scrap and put an aftermarket H pipe on with a duel in out...
  17. M

    Symptoms of a cracked head

    Just after I bought my 99 suburban the wife was driving it and it blew the heater hose y fitting that feeds the rear heat. I'm sure she got it hot. I've put 200k miles on it since then but it burns a cap and rotor about every 3 months. I've got a center cylinder on each bank with 75psi...
  18. M

    Manifold and exhaust pipe size 1/2,3/4 &1 ton

    I'm doing some swapping on a pair of 95's. 5.7 the 1/2 ton looks to have smaller manifolds and y pipe than the 3/4. Does this hold true with the 5.7 vortec between 1/2 & 1 ton also?
  19. M

    Tbi366

    I've got a computer and harness from a van with a 5.7/4l80. I've got a k30 cab and chassis with a 5.7, th400/205. I want to swap in a 366 tall deck and 4l80. I figure the 5.7 tbi should work with enough fuel pressure. Does anyone have a file for a 366 bbc tbi?
  20. M

    L29 0411 swap

    Did gm ever use the 0411 with the l29 from the factory?
  21. M

    Thoughts on 434 sbc for 99 suburban

    My 99 k1500 suburban has had a week motor for 160k miles. Guess its time for a replacement. If I had a K2500 bbc powered parts truck I'd swap a 454/4l80 into it. Unfortunatly I don't. A sbc is a easy swap and a 383 seams like a good choice. Looking at options I see I can get a short block kit...
  22. M

    4l65 tcc tuning

    From what I've read you can lock converter in 2,3&4 on 4l80 with the ls computers. Can you do the same with the 4l65?
  23. M

    6l 4l80 converter question

    04 lq9 going in a 95 k2500 with 4l80. The truck had a tbi 5.7. Primarily going to be a work driver and pull a car trailer on occasion. The 4l65 that was behind the 6l was really loose and the motor liked it. Is the stock 5.7 4l80 converter going to be to tight for the ls? I'm using a p59...
  24. M

    2000 k3500 crew cab dually short box

    Guy I work with has one with 7.4 and 4l80. Never seen a short box dual wheel truck. Motor misses and the trans has no reverse. I think it needs to come home with me
  25. M

    95 k2500 to 6.0l swap

    I've got a ratty 95 k2500 sclb truck with a dead 5.7 tbi. Was going to just swap another 5.7 but it's the only truck I've got with a 4l80. I've got a 04 Escalade ext (avalanche style) with a rusty frame that just smoked the 4l65. I need a truck to pull a car trailer and a goose neck and the 6.0...

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