Chip offsets: http://support.moates.net/programmin...using-offsets/
16197427 information:http://www.gearhead-efi.com/Fuel-Inj...Information-0D
1227747 to 16197427 conversion information: http://www.gearhead-efi.com/Fuel-Inj...light=16197427 and http://www.gearhead-efi.com/Fuel-Inj...st-impressions
dave w
Good idea to upgrade but I truly wouldn't see the point in it. If he had a 4l60 and Engine mods maybe , but he's just a guy gettin rid of a V6 leaking from every gasket and slappin and bouncing timing chain. Heck I THOUGHT I was doin him a favor with a fresh proven 350 engine at least. Turns out I handed myself a learning curve BEAT DOWN with old, (i started in 92) halfway vortech 4.3 coupled to Turbo400's which I cant even wrap my head around since I worked for GM from 94-2004 , buddy blew my IROC 305 so in 96' it got a fully roller vortech headed 350 ( carb :( but still had lock-up) and back then in the NM oil feild industry I never saw such an animal. So I'm not even sure what I'm seing in the schematic, depending on which i look at. Guy NEVER mentioned anything about trans issues but lo-n-behold it goes 1-2-seems like 3 then pop....freewheel. I see this detent diagram but it looks like kickdown to me, so could just swapping engines snapped the governor gear like the old ones and my chip tuning is fine, or does it all tie together on the ESC operating charachteristics and throttle delta? Oh, and sorry but my mind goes numb and I loose days in here so if the answers simple I'm all for the EASY button. Although the 28 pin adapters in and I've plenty of bins. 1 wierd thing...the AMUR I broke it in with never threw a code. When he brought back for trans issue I used the ARJT and it ran great,and sometimes I try to blow things up so i drove it with the CEL blinkin at me but I figured it was looking for 700r4 and allthe evap and purge was disconnected, ran great till decel throttle stall then flood on hot start, I'm trying the ADYR next but if anyones got my answer.... I'm very generous with praise and kudos especially when it'll get my churchgoing freinds ride back!
Last edited by TeamSlewis3; 03-12-2021 at 10:02 AM.
Unplug the kickdown wire on the TH400 and see if the issue goes away. They used the lockup programming to control the kickdown relay. If you are trying to use a 700r4 bin when the programming tries to lock the converter of what it thinks is the 700r4, it will force the TH400 to downshift. Been there, done that. Start with a 350/TH400 bin. They are odd but they exist. I have an 87 G20 that was a 305 TBI and a TH400.
Got it and trying to head that direction. Can only find AHWZ 5.7 W/t400 & I can only assume nightmares of trying to turn what off. I'm abit rusty and yes the 700 was in my datastream of the earlier attempt. Question: I remember injector offsets and setting cylinder volume but couldnt locate. It ran but was lean and I could see spark knock. Also I'm tryin to wrap head around this ABS module controlling that kickdown relay and why not just use TPS voltage... why??
BTW WE WAS DOIN THIS ME N YOU 15 YRS AGO....YOU N THAT VAN :)
Haha same guy, different van. Still have my 83 though. I built a 87 G20 for my mom. Bought it for $500 not running from the original owner. Had 104K on the van and its little TBI 305. Thought it had a bad fuel pump because it wouldn't run during key on. Then realize the CEL was not on either. Hooked up my test light, went through the fuses. No power to either side of the ECM fuse but when I wiggled the fuse it would make contact. Fuse box and underhood wiring harness had some corrosion from an older alarm that was poorly installed. I ended up using a piggy back fuse and a spade terminal to get it fired up and drove it home. The 305 ran great but it was leaking oil everywhere. Pulled the 305 and TH400, swapped a LQ4 6.0L with 5.3 heads ported by Lloyd Elliot and a small cam and 4L80E in its place and my mom now drives it on road trips. Had to go through the suspension and brakes but its now a $3500 camper van with a LS 6.0L. It has 2 golf cart batteries on the frame under it, combination 12v and 120 volt wiring, has a RV fuse box with converter in it as well as a 3,000 watt inverter. We finished out the interior with a laminate wood floor and real wood cabinets. It has a bed and a roof mounted turbo fan. It has a mini fridge, food prep counter and most of the features of home except running water or a toilet. She named it Gypsy. Gypsy loves burning up the road on long road trips with its LS power, 4L80E and 3.08 rear gears. Its drive by wire, the gauges all work, the a/c works and it has functioning cruise control on the OEM switch.Originally Posted by TeamSlewis3
My current van project is a 97 Express conversion van. Just built a nice 383 for it. Has a 4L85E and full 8-lug running gear. I tow my travel trailer with it. Fun van. I am about to put it on the road with an 850 cfm Q-Jet modified heavily with a kit from Cliff Ruggles using his book and an 0411 running the ignition system, transmission, cooling fans, a/c, etc. That is a Q-Jet that has not been touched in 10 years that came off my old 305 G20 van and was on about 5 other vehicles after that. I will swap it back to the factory based EFI after I find the $800 to buy the 48 lb/hr injection spider and $200 255 LPH fuel pump it needs to feed that spider at 58 psi it needs to keep from leaning out. I had a marine intake on it but it too needs injectors for the build. I decided to go back to a stock intake because I see the limited future in moded cars and don't want to buy injectors for the marine intake only to have emissions problems a short time later. For the time being its getting the carb with a remote mount TPS and a bypass regulator that I already have that will feed the engine and all the OEM harness will stay intact and get tucked to the side. Cheaper to spend a couple hundred bucks to modify and convert to the Q-Jet for now. Cliff is sending me the parts to really fatten up the fuel curve in that former 305 carb. As it is running stupid lean it starts easily, idles good, has instant throttle response and the plugs are near spotless with nearly no exhaust odor.
https://youtu.be/QiyyzgVKWfo
Last edited by Fast355; 03-13-2021 at 09:00 AM.
I actually LOVED my 84'Z28 305 Electric 4BBL QJet 5 speed back inthe day. got 27mpg on the hiway....so many cars ago.Good to talk again you still in TX? BTW the AHWZ 3sd still showing TCC stuff in datastream...
Ot will show TCC stuff in the datastream. Same output is used to ground the kickdown relay.
I had a former Olds 307 vin 9 powered 88 Cadillac Fleetwood Brougham De Ellegance that I bolted a 403 into with a mild mondello cam back in the day. I used an edelbrock performer intake and older 350 olds heads that I had drilled out the head bolts on. Drove that car almost daily for a year. 307, 2004-R and 2.53 rear gear stock. Idled at 70 mph down the road, about 27 mpg. Put the 403 in it, tweaked the CCC Q-Jet, got rid of the god awful DD rods, swapped the 403 rods into it, modified the air doors to open more than 30° and it ran great. Lost like 2 mpg going from the stock 180 hp 307 to a 403 making roughly 300 hp or so. After replacing the 10 miles of vacuum hoses, getting everything routed correctly, and dialing in the CCC adjustments it ran perfectly and passed smog with flying colors. With the freshened 403 it would actually maintain speed in OD uphill with the a/c on and not slow down 10 mph like it did with the 307, lol. Actually kind of miss that old, ugly lead sled. It was refrigerator white with a god awful blue top. Was my grandfathers car that I inherited when he passed in 2002, spent alot of time behind the wheel of it on country roads with him teaching me to drive. That car would kickdown to 2nd gear at 70 mph and not get above 4,000 rpm on a blast to 100 mph. The olds 307 reved to maybe 4,000 rpm and it would do 60 mph in low gear. When I sold that car it still floated down the road and the factory R12 a/c still blew ice cold. Actually kind of wish I had kept that 403. It was a solid main engine out of a GMC Motorhome that had a 500 Eldorado engine swapped in its place.
Still in Texas here.
Last edited by Fast355; 03-13-2021 at 09:38 AM.
and did it happen to take out the ecm drivers? I've since rewired but it's done something i'll call bad. and I dont feel like diaging whether it's ECM,or ESC . I'm almost fixing to convert it to run updated ignition and get away with that $$ obsolete ESC. Cranks and runs fine but has no power which i assume is timing over the 450. WHAT HEI !!!!! use the pickup for the injectors... sweet . $58
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