Ramjet 350 Computer, We bought the vehicle with a bad case
Ramjet 350 Computer, We bought the vehicle with a bad case of DLS (Drives like Shit, not to be confused with RLS; long story). Instructions say to turn off engine, plug in the DTC tool, in off position, then start engine and turn on DTC tool. 7 With a Ramjet 350 Crate motor from GM. I have replaced the original vortec 5. The RAMJET 350 engine includes a fully assembled block and heads, oil pan, torsional damper, water pump, intake manifold, fully calibrated Engine Ramjet Tuning We have the capability to change the calibration and tune of your Ramjet 350 or Ramjet 502 MEFI ECM. C3 Tech/Performance - Ramjet 350 retrofit - I am looking for advice on how to complete wiring connections for my new Ramjet 350 engine. The RAMJET 350 engine includes a standard rotation water pump. TechMate Pro allows you to: Display live sensor readings View spark advance and fueling information Extract and erase ECM fault codes View fault code explanations Click for ScannerPro screenshots and detailed program info. 412"/0. The Ramjet is much Get the Best Performance with Chevrolet Performance Ram Jet 350 350ci Engine 351 HP 19417619 parts at JEGS. RAM Jet 350 - ECM Replacement Jump to Latest 3. About 3 months ago we decided to add the GM MEFI4 upgrade kit which includes a new wiring harness, computer, 02 Has anybody been able to use another/aftermarket GM TPI ECM to run a Chevrolet Ram Jet 350 engine, and get better off road performance? Something that can be reprogrammed for better low-end response? The computer on the later units is a speed density-based computer, which uses all eight injectors for the cold-start process. I want to put this in my 55, and to make it extremely reliable I would like to put fuel injection on it. GM Performance Parts has just what you need to put a modern twist on your favorite classic hot rod with our amazing Ram Jet 350 crate engine. Shop Now at the Guaranteed Lowest Price! The RAMJET 350 engine is based on the Chevrolet electronic, port fuel injection marine engine. 3 V8 (vee 8) bably LT1 GEN 2 engines that was the standard engine in the Caprice cars. I don't know for sure but it would seem to me that a ram jet is not OBD1 why not check the sourcethere were various web I am close to ordering the 350 RamJet from this page below. Just about every cam company sells performance roller cams for OEM roller cam engines. Includes optional O2 sensor and speed sensor wiring. We do this Ramjet tuning on a mail in basis, and charge $200 for basic tuning. Another potential candidate could be GM’s RamJet crate engines that for years have been commanded by a rudimentary, non-feedback Mercury Marine MEFI 3 and later MEFI 4 ECU. 4K views 9 replies 5 participants last post by Algoma56 Mar 13, 2023 E Who has a 350 ramjet engine on the road with some real seat time on it? How would you rate it on a 1-10 scale? dependability performance gas mileage unexpected bugs idle consistency Any other comments for someone considering one. The R4's are rumored to be difficult to set up and make shift correctly I was wondering if I had a vortec 350 out of a 1996 Chevy truck, can I install a ramjet manifold on this motor and install the same ramjet cam and have it run? I have access to the complete manifold setup for very little money. Don't suffer with a poor running Ramjet any longer! Custom May 4, 2014 · Ramjet uses the Marine computer. Installed in everything from station wagons and sports cars to commercial vehicles, boats, industrial equipment, and even (in highly modified form) in aircraft, the 350 is the most widely used small-block engine of all time. I would definitely consider going to a GM computer from a car, or the Holley. ater look than the factory supplied harness. Did your 502 come with O2 sensors? Converting using the controller that comes with them is pretty expensive, and I've heard it's still troublesome. I opted to replace the stock GM MEFI4 ECM with the Accel DFI system Roger mentioned above. 428" lift on a 111º. Restification—blending the best of the old with the best of the new is the hottest trend in hot rodding today. TechMate Pro allows you to: Display live sensor readings View spark advance and fueling information Extract and erase ECM fault codes View fault code explanations Other then dumping the EZ-Link scanner and going with the Rinda Technologies Inc. At this point, you move the distributor to set the base timing. Even the 395 Ramjet 350/HT383/Marine 350 crate engine cam is a nice addition over the lame stock Vortec 305 L30/350 L31 191º/196º 0. I posted in the engine building section but have had no responses. Scanners or the Diacom Marine software for my notebook PC, can anyone give me some help in scanning my RamJet 350 with Marine EFI? The Ram Jet 350 is essentially a ’97 Chevy Vortec motor with a custom cam and port injection EFI intake system. It came complete with water pump, flywheel (manual transmission type), distributor, plugs, plug wires, computer, sensors, wire harness, and a rather worthless air filter. The installation instructions say that the engine development was done using a long tube type air induction system. Looking for feedback on whether it's a good solid engine. Can be used with any non-computer controlled Transmission. The 1994-96 iron head 350 LT1 was an optional engine. P. I have spent many hours under the hood of the truck and it was running great. I know that GM’s intent was to keep the Ram Jet Both the Ram Jet 350 and the Ram Jet 502 have a reputation for not having a sharp tune. The RAMJET 350 engine is based on the Chevrolet electronic, port fuel injection marine engine. experience would be appreciated, thank s Find many great new & used options and get the best deals for Chevrolet Performance 88962717 RAM Jet 350 MEFI IV ECM Replacement Module Only at the best online prices at eBay! Free shipping for many products! However, it was the 350 cu in (5. This self-contained, hand-held diagnostic scan tool displays complete GM Ram Jet fuel injection system information allowing you to perform component level engine diagnosis like the pros. This engine Hi All, What should happen to a Chevy 350 TBI engine if the Idle Air Control Valve is disconnected? Engine is running, warmed up, and the vehicle is parked. I have a 97 vortec 350 block and I have a cam with . engine. I don't need a a lot of hp, just want some cool factor On the typical 350 TBI engine with an AFPR, up to 240 hp. The later MEFI4 open/closed loop wiring harness addresses this issue to a certain existent The 350 Ram Jet and the HT383 both use the same valve springs as the stock Vortec 350. There were lots of wires, vacuum tubes, etc, required to run the old engine. When I purchased it, there was already a Ram Jet 350 installed. The Ram Jet 350 engine is a GM Performance #12499120. So i replaced the fuel pump and the fuel pump Hello guys I got me a used vortec 350 small block that coming in the next few months I am going to re fresh it with new gaskets and I am going to take out the factory vortec roller cam and I am going to buy a ramjet 350 hydraulic roller cam 14097395 which specs at 288/308 196/206@50 431/451 lift Anyone out there with a RamJet 350? I have one in my non-Tri Five (67 Nova) that I bought new, and got running in 2010. this cam was also used in the 1994-96 L99 4. We've checked timing, adjusted it, checked for vacuum leaks - all of the usual things. I would use the stock vortec pistons but use a . Has slight lope as well. Flashing light game was the old school thing OBD 1 like on TBI engines. ASM offers calibration of the ECU to correct overly rich running condition on MEFI 3 ECU's and toggle on these features, and provide the O2 sensor upgrade. Had no issues with it, other than some "almost Stalling" issues when I would come to a stop and push in clutch. Its far from the Ideal situation. Backed by Chevrolet Performance and engineered for consistency, the Ram Jet 350 offers unmatched value and street-friendly performance for a wide range of applications. Ramjet uses the Marine computer. These engines ran very rich, fuel fouling spark plugs and as a result poor fuel economy. Chevrolet Performance Ram Jet 350 350ci Engine 351 HP @ 5000 RPM Part Number: 809-12499120 Product Q&A View Now Click image to zoom New to the group and hoping someone with some expertise can help. Get detailed instructions to help with crate engine and component installs. Or am I better off just sticking with the stock cam. It incorporates modern technology in a package that can be installed in applications where 265-400ci small block Chevrolet V8s were originally used. Getting ready to start up the engine for first time. Hey Guys, I have a really sweet 355 that was built very close to GM Ram Jet specs. 466 lift. How do I tune it? If you've been searching for a reliable, fuel-injected Ramjet 350 that offers the best of both worlds—classic looks and modern performance—this engine delivers. Click for ScannerPro screenshots and detailed program info. The car is an '82 Corvette (non-Collector) which had the Cross-Fire F. We use computer tuning with the help of a GM Performance Parts MEFI 4B engine controller to tune the GMPP Ram Jet 502 engine in our Project X '57 Chevy - Super Chevy Magazine Ramjet Tuning We have the capability to change the calibration and tune of your Ramjet 350 or Ramjet 502 MEFI ECM. This engine runs off an open loop system and is known to run rich. My Guess is the o2 or map sensor went bad, check the map sensor it has a hose off the back of the intake to a small black box maybe the hose came off the intake. The Ram Jet 350 and 502 engines used either a MEFI 3 controller for the older Ram Jet 350's and 502's or a MEFI 4A controller for the newer Ramjet 350's and 502's. One day he came across an article on the GM Performance Parts Ram Jet 350, in which it was noted how the engine was designed to look similar to the early Corvette fuel-injected mills. 2 days ago it died and never started back up. Shop Now at the Guaranteed Lowest Price! RJ-42 Small Block RamJet Fuel Injection System This wiring system is compatible with the GM Performance part small block Ramjet 350 engine part number 12499120. The engine produces 350 hp and 400 lb-ft or torque out of the box. Could I just buy the intake manifold, which is $400, and bolt it to a salvaged 350 block? What else is unique about the ramjet? The computer? I think doing this would be a heck of a lot more affordable than buying the crate engine, am I would not ram jet be OBD ii ? Does it not have the full spectrum of sensors? Code readers are $300 and less approx. 015 shim head gasket. Don't know much about cams so any help is greatly appreciated, thank you. Whats the best mild cam for a stock 98 Vortec 350? Don't really want a lope idle, but want a cam that adds more horsepower and torque than stock. So we have a Ramjet 350 engine, running on MEFI 4, that was installed by the previous owner of our 1991 (Squarebody) Suburban. Vortech heads, GM Ram Jet hydraulic roller cam, etc. Plug the ECM connector into the mating plug. The Ram Jet 502 fuel-injection kit is complete and ready to go. Works with stock springs and good performance increase. The earlier units used a mass airflow sensor in addition to the cold-start injector. Anyone running this engine, with the MEFI 4 controller. Ramjet 350 and Ramjet 502 Reprogramming We have the capability to reprogram the calibration and tune of your Ram Jet 350 or Ram Jet 502 MEFI ECM. Ramjet is speed density, so it uses the air pressure in the intake for fueling compensation. Gm performance Ramjet 350/HT383 cam. This harness allows a custom fit to your vehicle application by allowing you to position (run) the wirin the w NOTE!! Since 1992 the GM Delphi MEFI ECM Controllers have been used in a wide variety of applications, including: Marine - MerCruiser, Indmar, and many boating applications Off-Road - Sand rails, race cars, industrial engines, and more Crate Engines - Ramjet 502, Ramjet 350, LT1, LS1, LS2, LS6, LS7, Ecotec The MEFIBurn Scan & Tune package comes After running my crate Ramjet 350 for awhile I found the engine generally ran too rich and it, too, would die occasionally. in 2019 got a re-programmed ECU from Arizona Speed and Marine. These are password protected EFI controllers that are not user-accessible and have a habit of running quite rich at part throttle. . The RAMJET 350 engine includes a fully assembled block and heads, oil pan, torsional damper, water pump, intake manifold, fully calibrated Engine It was time for a change. Don't suffer with a poor running Ramjet any longer! Custom GM Ram Jet 350 and 502: You have a nice engine! Why use that ugly stock harness? This is a replacement harness for the GM Ram Jet factory crate motor. The engine has run perfectly for over 20,000 miles but it has always run rich. C1 & C2 Corvettes - Ram Jet 350 issue - I have one of the original (MEFI3) Ram Jet 350 engines installed in my wife's '62. GM offered the Ram Jet fuel injection system on a variety of models in the MEFI 3 equipped models had no O2 sensor feed back for closed loop operation or air temperature compenstaion. The part number is #10212811 for a single spring, and #19154761 for a set of 16 springs. Installation of ECM l the new ECM (GM part number 88962717) usin the mounting bolts from the old ECM. Can someone lead into the right direction for something like what I need advice on cam change for a ramjet 350 crate motor,350 trans,373 rear gear in a 34 ford kit car need more H. Arizona Speed and Marine is the only company (that I am aware of) that can re-program the Ram Jet chip and, the last time I checked, I believe they wanted about $400 a pop. ECM connectors on the harness an be identified by the clear or smoke colored alignment keys Injection électronique de carburant (EFI) du RAMJET 350 MEFI 3 à MEFI 4 Nécessaire de conversion 12499116 Another option is the Ram Jet 350 cam. Here is my question. BUT I do not necessarily want a 700R4 behind it. I'm planing on swapping intakes to run a carb and am wondering if I can use this cam and if I can what need to be done. These port-injected small-block Chevys are about the simplest I was checking out this sweet engine and got to thinking. I have heard my ramjet cam causes idle problems but with the later computer, it will run OK on the stock chip. Popular choices include, stock GM TPI pumps, Walbro 190lph and 255lph, and the Holley 255lph. Should have a standard obd2 connector and anyone with a code reader can plug it in. I have a Chevrolet K5 Blazer I have set up to be my back roads vehicle. Past this, and you need larger injectors, more fuel pressure, and/or a larger fuel pump. 444/. A high flow unit will supply enough power to your TBI system no matter what mods you go with. Check ebay, you`ll find several used ones. This is a long post but I wanted to provide as much information as possible. The main problem with the Ram Jet is that the "computer" is locked and cannot be tuned like the LT1, LS1. 7 L) series that became the best-known Chevrolet small-block. Had xr270hr comp cam and liked the ramjet cam better The GM Performance Parts RamJet 350 crate engine has been on the market for a few years now, and we've enjoyed them in several cars. Move the controller and other components off the intake with our Telorvek style replacement harness. Once I set the base timing at 10 deg Okay here is a little backround on the truck. You have a nice engine! Why use that ugly stock harness? This is a replacement harness for the GM Ram Jet 350 small block MEFI 3 factory crate motor. Access official Chevrolet Performance installation guides. This webpage offers a comprehensive manual for Indmar MEFI 4, covering various aspects of watersports and boating products, parts, and accessories. Real simple system The Ram Jet 350 fuel-injection system (PN 12498032) requires the MEFI 4 ECU and injector harness kit (PN 12499116). One of the modern Transmissions associated with the LS engines seems like a better option to be driven every day. Real simple system Home Small-Block Crate Engines & Components Small Block Engine Components Intake Manifolds, Gaskets & Components Ramjet Electronics MODULE ASM,ENG CONT *RAMJET 350* Nov 2, 2011 · After running my crate Ramjet 350 for awhile I found the engine generally ran too rich and it, too, would die occasionally. This is a cast iron, long leg water pump; the same pump that is installed on the GM Performance Parts ZZ4 crate engine. I. Ladies, I am looking for some advice on ways to reduce the eye watering fumes that are coming form the tailpipe of my RamJet 350 MEFI3. 5) Stay away from TBI Chips, a few of his chips have been audited on different forums and he does sneaky stuff when he is stuck on a customers tune. 4,089 posts · Joined 2009 #12 ·Oct 9, 2014 i run a ramjet 350 in my 58 chevy truck, i consider my choice of motor to be the best thing i did to truk mine is an 04 motor with the mefi4 ecm which has the addition of an O2 sensor you can upgrade to the mefi4 ecm, while it still won't be tunable, it will run a lot better and it should be plug and Get the Best Performance with Chevrolet Performance MEFI 3 ECU Wire Harness, Ram Jet 350 12489492 parts at JEGS. not hard to do, you count the flashes after it goes through the self check. Ram Jet 350 - Port fuel injection meets a small-block classic. Thinking about going with the ram jet on my '55 vert. The computer will handle all the timing chores once you have verified the base timing! Otherwise, it thinks it's giving you 34 at wot for example and it's really 44, and so on. wiztt, gsagx, moge2p, bdnu, uir87l, kukmk, msopj, nfyap, vefl, zdqoe,