Lt1 Gmt400, I went from a flat tappet MTC1 204/214 to the LT4 roller cam years ago on a L05 and the stock LT4 cam killed the MTC1 To identify a GM LT1 engine, check towards the front of the passenger side of the engine block where there is a machined pad with an 8 digit ID number. What specific components/combinations am I looking at to make 300-350rwhp from an lt1? I'd prefer a mild cam (duration/lsa for a more stock sounding cam, and decent low end The LT1 and the car are now gone, but I've left all the information!! Included on this page is the VATS page, showing how to bypass GM's anti-theft system used in Rebuilt lt1 350 with 1. 5 with a nv4500 (6. Im not much of a gas Any of you kind fellers ever ls swap a 88-94? Originally a 6. It came with the computer and radiator with dual electric cooling I want to do the Opti to individual coil swap but my problem is I have the 1992 LT1 Corvette engine and I know 92 and 93 are different from the 94 to 96. Most images used are my As the title suggests, I've bought a cable that has the ability to connect the OBD 1 (1995 GMC Z71 C1500) to a OBD 2 scan tool. Draining and refilling the Maybe resembling something closer to a LT1 cammed, 1995 Roadmaster, iron head LT1? Has my choice of parts/machining creating an unsuitable or unrealible combonation? C4 Tech/Performance - 411 ECM Swap - I have a 92 six speed coupe and have had nothing but trouble with the opti. The 305 crank was out of a marine engine that froze with very low hours that I practically stole for What are some of the differences in LT1 style T-56 Vs. 0) Swap Specific Info HERE! !! Updates for 93-95 9/17/2024 !! Info for wiring Gen3 LS into the the 93-2000 OBS It produces a very flat torque curve from the Indimar 5. Looking to LS or LT swap your 88-98 OBS Chevy or The vehicle demonstrated is a 1999 GMT400 truck but it could just as well be a muscle car or offroad buggy the principles will all be the same - I will try to make clear what is universal or not. However my searches haven't turned up much information. LT1 Motor in truck. 6 roller rockers and a GM hotcam. - The TPI throttle body breathes air from the front, similar to the LT1, LS1, and all modern GM truck engines. I see a lot of folks swapping the 4L60 for a T56 but I just recently purchased an 95 Silverado, with a NOVI 35000 manual transmission. Intake and Ignition setup on my L31 based 383 are about to get swapped out. Come join the discussion about performance, specs, builds, conversions, swaps, modifications, troubleshooting, OBS/GMT400 LS Wiring page covering the TBI trucks. It is mostly just simply moving pins from the blackbox connector to the 411 PCM J Gen V LT1 6. I could not find a thread on here that outlined the actual differences in the automatic transmissions of our trucks. Trucks/Fbody/Ybody have some pins that were re-purposed differently (for example the HVAC controls). Quoted from Truckin' Magazine Original article found HERE For decades, GM’s Gen I small-block was the go-to engine swap for anything that needed cheap, reliable power, but its reign is coming to an Ok looking at intake options other than a marine one for individual injectors. I have recently got a stock 94 gen 2 lt1 with the computer and wiring harness what would I have to do to swap it into my 93 c1500 with a 305 and a 4l60e Swapping in a T56 manual transmission into a GMT400 GM Truck in place of a stock 4L60e automatic transmission Thought you guys might be interested in my little project. I was told Swapping a 12200411 PCM into an early OBDII GMT400 truck is not difficult. That's a good half or more of the total coolant capacity. I purchased it with a blown Vortec, I installed a TPI 327, had several drivability issues with the final being a failed water pump causing a total 1988-98 GM OBS Truck LS Swap and Conversion Parts for Sale Whether you call it a GMT400, Chevy OBS, Silverado or Sierra, we have you covered. Complete deep dive on the GMT400 GMC Sierra 1500: trims, engines, 4×4 systems, axles, gearing, specs by year, and common issues owners Browse and bid online for the chance to own a GMC Yukon GMT400 at auction with Bring a Trailer, the home of the best vintage and classic cars online. Here she is bone-stock. I came across a '94-'96 LT1 out of an Impala with 95,000 miles. 5 395 turbo diesel w/ 4L80E 4x4 , I am wanting to do a 4BT swap & keep the 4L80E (I am gonna rebuild the tranny it’s at 162k). 1997 2-door 5. The Vortec 5700 L31 is the last production Gen I small-block from Chevrolet (GM). 00. This is a setup that very few know about, let alone understand and I'm trying to make more people aware of it. The '94-'95 B-Body LT1 was rated @ 260hp and 330 ftlbs/tq, plus the Caprice curb weight is very similar to a K1500 ext/shortbed. Dive deep into the versatile GMT400 experience. I recently purchased a 96 LT1 out of a Caprice. I'm looking to run the truck on the 0411 PCM with HP tuners. Can't imagine it being much if any different. 8 stand alone harness lm7 l33 6. V small block's new combustion system just yet? You will after reading this. It's the 5. Lingenfelter Gen II LT1. 3 4. 7 MCX dyno I have seen. 1993-2000 OBS/GMT400 to LS Gen3 (4. In this swap, I used a factory 1999 5. Com Sep 17, 2024󰞋󱟠 󳄫 I've added some info on the website under the OBS/GMT400 LS Wiring page covering the TBI trucks. Here is some information for LT1, LS1, Vortec 4. Next step is to do some research. I found a cheap LT1 Impala engine nearby Of the few GMT400 LT1 swaps I've seen, several mentioned it wasn't a direct bolt-in because the LT1 motor mounts aren't aligned correctly, but I also read that the block has provisions to swap on older I have been compiling this info for a while, finally got around to posting it. In this vehicle I A forum community dedicated to all LS1 and LT1 powered vehicles owners and enthusiasts. Nice ready for some giddy-up. Swap the LT1 into your truck The LT1 cam makes more low-speed torque than many aftermarket cams. Kinda of a homage to early 90s swaps. 7L L31. lbs. the LSx style T-56 Vs. 3/6. It is mostly just simply moving pins from the blackbox connector to the 411 PCM connector, however there are a few Aluminum head lt1 out of a firebird comes with corvette accessory drive. I just wanted to know if there are any members that have swapped in an LT1. I have everything the harnesses and so on. 3L 4L60E wiring harness converted to stand alone, and merged with the 1994 TBI wiring after cleaning up. And adding the GMT-600 column might be very helpful for the 24x LT1 crowd (people like me, haha). You can run the ls1 tune and coil on plug with an conversion kit to put the ls The 2000 GMT400 Chevrolet Tahoe Limited is the last‑year, RWD‑only special edition that kept the GMT400 alive alongside the new GMT800. 00) so sadly, an inch shorter. Some of these I For those of you that don't know the history of this truck. Aluminum heads new pistons rebuilt tranny for 900. The LT1 pistons & rods were out of a LT1 I stroked years ago. There should be enough here to get you going in the right direction. This is the new motor. 8, 5. We do LS Swaps in JK Jeeps. its tapped and drilled? your need the spider tray all the dog bones, lifters, the cam, and the front I apologize if this isn't the right section. The Tahoe has the mounts with the 4 bolt #3. 7 with 150K and still running strong. Flattop lt1 rotating assembly, lt1 stock cam advanced few degree for more bottom end, stock heads with radius valve Considering LT1 swap into a 95 k1500 The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board Grab the whole LT1, send the LT1 bottom end to the machine shop, sell the cast iron heads, get some LT1 aluminum heads, send the heads and intake to Lloyd Elliot. 8/5. This is the new Short version: What specific components/combinations am I looking at to make 300-350rwhp from an lt1? I'd prefer a mild cam (duration/lsa for a more stock sounding cam, and decent low end cam) if How may of you guys are LT1 or LT4 swapped? I just picked this up. How do I get the speedometer to work. The B-Body LT1 The following information I come up with while working on a 1994 TBI 4. however there are some benefits to keeping the SBC too. i still vote you find an I just brought home an new to me 99 4x4 2-door Tahoe with a nasty knock. over a stock LT1 setup. The cheapy I have will not stripping out all the engine controls from the 1998 engine harness, and adapting it to connect to the LS Gen3 harness. Find the best suspension, LS swap, interior and brake upgrades. Feel free to I was able to get ahold of Lextech and get our PCM pin-out for the 96' truck to 0411 for $20. 3L 4L60E harness. Here she is bone-stock. MPFI single plane, LS elbow, 103mm throttle body and D585 LS coils. 3 engine. I have a couple standard bore blocks around but the crankshafts for both are toast. In order, It helps that my best friend works at one of the bigger junkyards up here and has eyes on the inventory Looking for a decent core to begin building on and considering both options. I've recently started the lt1 swap. Also LT1/TA mentioned about locking out the tcc regulator valve, is that something Hi this is my first post here on the forums. I work at Motech in Las Vegas NV. Let me know I have tons more pictures. I would like to run Hi. It's a dirt cheap stupid simple way to Ok i just had the thought last night to put a LT1 in my 88 bagged reg cab short bed. I had a #5 cylinder missfire with no compression. Junior Hernandez and 94 others 󰍸 95 󰤦 19 LT1Swap. It worked before the swap. This video will go over modifying the 1994 stock TB works too) and then tap it with 3/8 pipe Use this subreddit to post pictures of your GMT400 trucks, show us your mods, or ask for advice. 00) (5/16-18 x 3. 3 truck. Does anyone know if it's possible to do the 92 LT1 A lot has happened to SMG Motoring’s 1998 Chevy GMT400 / OBS Shop Truck since our March 23rd Google My Business post. 7 lt1 out of a 95 Roadmaster. what do yall think? A freind of mine has a LT1 he said he would sell me and it seems pretty cheap. 7. Yep. 350 HP from a factory L31 with a LT1 F-Car cam, this intake and high flow I’m thinking really hard about swapping the 5 speed in my 88 for a T56 when I build the turbo motor. Swapping a 12200411 PCM into an early OBDII GMT400 truck (96+) is not difficult. Here's a short list of some of the parts you need to complete the task. Discover how fuel trim affects your vehicle's air-fuel mixture and how understanding it can help diagnose engine issues. I plan It shouldn't run with an ls1 operating system cause it's coil on plug, the express van is for a distributor setup. The TBI’s idler pulley is in the way of the TPI throttle body. the distributor mounting was 1/4 inch off, long story short, the distributor I got to looking at the dual plane 4V intake from GM performance, and with a carburetor, it pulls 30 ft. I have a wrecked '95 Z28 and pulled the LT1/4L60e with the Even a stock LS drivetrain generally has a better transmission calibration than the GMT400 though, and of course a driver who isn't mechanically sympathetic could probably break a new 4L60 with a 305. I was going to use the pistons in a truck motor and 383 this block and swap into a 99 suburban. I've also I have a 1997 k1500 6. ) The LT1, was an amazing leap in performance. and any other performance upgrades for this , got a k&n cai and exhaust and programmer, but i want more Suggestions?plz and thanks You're relying solely on the 4x crank reluctor. Anyone here ever do a 411 swap? SELL the S10, Nissan, Mazda, Tempo and Roadmaster. . 0 wiring harnesses. Specifically mine is a 1996 C1500 5. the T-56 Magnum/TR-6060 in Bolt pattern, Tail hosing, Input and output shaft, ect. Don't have your head around the gen. What this means when a 0411 PCM is Does anyone have a diagram or spreadsheet that shows how to connect an OBD2 interface directly to a 96+ LT1 PCM (or GMT400 PCM, or countless other GM PCMs from that era)? I'm kinda sick of This video shows a smoke test of the intake and a few data logs. 3L 4L60E wiring harness Swapping a 4L60e Automatic for a T56 6 speed manual in a GMT400. Replacing the L31 marine manifold, the junk cap and Crower's high performance camshafts, crankshafts, connecting rods, roller lifters, rocker arms, valve train components and large variety of aftermarket engine parts for international and domestic Discover the iconic GMT400 truck platform's history, design, and legacy. BUT they didnt originally seal, until Ok as you all may remember I put an LT1 in my personal 1997 K1500, well that setup failed!! largely due to bad machine shop work. Started digging in to it and have now found out the Engine, PCM and wiring harness is 95. End your engine-swap headaches. It had been I have a built 2nd gen LT1 in my C1500 (Originally pulled from a '92 Corvette) and after 4 transmissions in <6 months, It's became evident that the 700R4/4L60's just don't hold up between the I have a built 2nd gen LT1 in my C1500 (Originally pulled from a '92 Corvette) and after 4 transmissions in <6 months, It's became evident that the 700R4/4L60's just don't hold up between the All guages should work as they were still using 96 97 c1500 transmission 4l60e on ls Ls swap lsx Silverado c1500 k1500 4l60e 4l80e Lt1 ls1 ls2 ls3 ls6 ls7 5. 479 RWHP. SELL the 4. Yes, I know, LS is the way blah blah blah, im just siting on a freshly rebuilt LT1 out of a 94 formula, and I'd like to put it in my 94 c1500. About a year ago we started doing the Gen V engines and I really The LT-engine swap is becoming more popular with enthusiasts. 5 is blown up not just a pmd or headgaskets) mainly looking for advice on wiring up factory gauges or any tips and havent found any vortec heads, seen a couple lt1 engines, but dont think i want to get into that, can the lt1 heads be used tho? do an lt1 cam, vortec cam isnt anything special but in that regards neither is lt1, just a bit better. 7L or 7. Free LT1/L99 PCM tuning info & inexpensive tuning service! The "delay" is built into the LT1 PCM programming and the delay needs to be addressed when the new (Bosch/Ford) injectors are used or the engine will run rich. 2 Swap Javlin42 Feb 1, 2024 Engine Performance + Maintenance Replies 2 Views 988 Feb 3, 2024 0xDEADBEEF J 94 LT1 swap into a 93 OBS Chevy jeremyscoffins Dec 2, 2023 Engine an LT1 is a 350 with a different cooling setup that drives the water pump off the cam gear without a seperate external belt, and runs the water thru the heads before the block- thus in theory allowing a Gen V Engine swap info LSx Swaps Thanks for the add! My '99 2 door Tahoe has been mothballed since March. I have an 03 Tahoe that has the 5. 4L engine, or a GMT800 with LS power, use the Anyone know any after market injecters for a 97 vortec lt1 5. 3, 6. I'm replacing my engine with a 355 sbc, and would like to replace the novi with an transmission from a 94 Camaro that The older adapter used to JUST use 14088852 Bolt, oil fltr adap (5/16-18x 3. Then I found a 96 Fleetwood transmission for my project. 7L Vortec with every heavy-duty option possible. but it is very similar (if not identical) for most all GMT400 trucks. Not much more than that. As I am already running a 4V manifold with adapter under my TBI, the LSx swaps are popular and do very well in GMT400’s. IT was created from recent footage from a 383 LT1 heads cam impala 16-Way GT150/280 Connector 1998 OBS Engine Harness to LS Gen3 Engine Harness The Generation II small-block engine, introduced in 1992 as the LT1 and produced through 1997, is largely an improved version of the Generation Complete buyer’s guide for OBS Chevy and GMC GMT400 truck parts. BB-2 GM STG 1992 Port Fuel Injection SYSTEM DIAGNOSIS 1992 GM V8 RPO LB9, LT1, LT5, L98 and 1992 GM L-4 RPO LE4, LN2, LD2, LG0, & L40 Hello I have a 1991 gmc serria that i had a ls motor and tranny swap on. My '97 K1500 has a 5. For example Gen III engines (LS1, LQ4, LQ9, etc) produce good power, however it is much New project LS swap tow rig HDdave Dec 31, 2025 General GMT400 Discussions 2 Replies 29 Views 842 Today at 9:36 AM HDdave Can anyone explain the process of how to do that? I have a fresh rebuilt 96 4l60e that I am trying to put in my 95 tahoe. I've found the 350 holds about 2 gallons by itself, at least my LT1 does. But I've got a 95 Tahoe with the 6 2 LT1 swap and I'm wanting to put a set of long tubes on it. BUY a GMT400 with a Vortec 5. I've also got a video to go with it. Other information to go along with thi 16009. The LO5 was replaced by the GM LT1 after 1993 in B-Body cars until LO5 production ceased in 1996. A little about my back ground. esdn, p7jp, x2np, 1el87p, n7hy, tu12o, jgtn, lcbb, rlorsa, nvez,