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  1. 12v Conversion Builds and Shop Talk
    Hi all, I have a 1978 Ford F-250 that I have put a 1996 12 valve Cummins in with the 47RE 4x4 transmission. What do I need to make the transmission work as it should?
  2. 94-98 Non-Powertrain
    Hey guys, Another no crank no start. 97 12 valve dually. Started up fine the other morning. No wipers. Huh, weird. So checked my fuse panel on driver side dash. Got it mixed it pulled the wrong one one, i believe it was the one labeled "engine" on the legend of the fusebox cover, because...
  3. 94-98 Powertrain
    okay guys bare with me for the long post but any info is helpful. my 12v started over heating an come to find out the previous owner had a oil cooler go bad and he replaced it but didn’t flush the system. i flushed everything with dawn dish soap an put a brand new thermostat and water pump on...
  4. 94-98 Non-Powertrain
    So I have an issue with my 94 dodge Cummins ,it has no tack no speedo no check engine light and a few other things.I just got this truck so I’m trying to fix some one else’s issue,I have a few of these trucks so I know some of their issues,on this 94 I can’t find it , I have checked my pcm and...
  5. 94-98 Non-Powertrain
    1997 12v 3500 New batteries New starter New FSS all within last year, and it not my daily. So when I say crank, there's either a ticking noise, like rapid fire let's say. (Probably solenoid) and when I have it connected to another vehicle, (1982 6.2 suburban dual batteries diesel, so she can...
  6. 94-98 Powertrain
    I’m having a problem with lockup where it slips randomly when I get on it and sometimes acts normal and I can floor it and it won’t do it has new torque converter and transmission has about 5 thousand mile or so it’s a 47rh. The truck is a 1995 dodge 2500 2wd has a couple things done just fuel...
  7. 89-93 Powertrain
    I have a 1989 non intercooled 12 valve Cummins with a hx35 turbo, the engine is factory stock except the hx35. it is in a 1998 Chevy with a 4l80e behind it. the turbo whistles very loudly with a constant high pitch whistle while under any load. I have wired the wastegate shut with a hose clamp...
  8. 12v Conversion Builds and Shop Talk
    Hey Guys my name is Liam, and i am looking to swap my square body into a 12 valve, and i have a sm465, or np205 and was wondering if that would be ok to put behind a stock 89 12 valve motor, the pickup in question is my 1979 chevy ck on 35s i know that i need to upgrade the springs, and...
  9. 94-98 Non-Powertrain
    I manual swapped my truck, did the front timing cover and crank seal, and tappet cover. Put it all back together and my tack doesn’t work. Neither does my Speedo but it’s the same transfer case I just swapped inputs. You have any ideas ? I’m stumped. Only thing I can think of is the crank sensor...
  10. 94-98 Non-Powertrain
    I've got a 97' 12 valve that ran totally fine the other day but went out and tried to start it and at first it started up, ran for about 20 seconds and died and now it refuses to start up again. It's been cold here so I went ahead and put some 911 in it and changed the fuel filter but it still...
  11. 94-98 Powertrain
    Hi everyone. I have a 1971 Dodge W300 with a '94 12 Valve and P-Pump. I just put in the 3K gov springs, got the whole job complete installed everything to the correct specs and things went well at first. Drove around the block and the power increase was phenomenal. Went to take it on the freeway...
  12. 98.5-02 Powertrain
    I have a 98.5 engine with 24 valves. I converted the injection pump to a VE pump from a 91. Also I put the 91 camshaft and a manual supply pump. So it is basically a 165hp 91 model 12 valve but with 24 valves. And I want maximum fuel economy not black smoke. So my question is, what...
  13. 94-98 Powertrain
    I have a 1995 2500 12 valve 2wd that I just installed a lock up switch that keeps blowing #9 fuse which keeps shutting off my motor.
  14. 94-98 Powertrain
    sorry for the bad photo but it’s the best I could find for the electric plug. I was pulling my motor out and I didn’t see this plug and pulled just the wires out of the plug. Any idea what this plug is called so I can order a new one with some wires on it. Thank you in advance.
  15. 94-98 Non-Powertrain
    I have a 94 12 valve automatic with afc live, 3k governor springs and a new fuel pump. Before the modifications until current after an hour or so of driving it will buck and shudder then the throttle will kind of stick for a second and it will die. After it sits for a few minutes it will drive...
  16. 98.5-02 Powertrain
    Hey guys need some help identifying a borgs warner turbo i recieved recently with no name tag on it and then i am interested in injector suggestions for with it for my 96 p pumped 12 valves thanks in advanced turbo pictures and number attached
  17. 89-93 Non-Powertrain
    I want to know how I'm getting such lousy MPG. My truck is a 91 N.I. 727 4x4 stock height & suspension. 10 mpg cannot be right. Current mods - fuel pin, recently installed 366 spring last weekend and reset the power screw to its factory setting (counted the threads). Truck does have a leaky VE...
  18. General Common Conversion FAQ & Tech
    In a couple months I plan on doing a 12 valve Cummins swap on my 2005 Ford F-350 and I’m trying to figure out the fans. I’ll be getting a new mishimoto radiator and inter cooler and all. I like the idea of having more room infront of the engine and the little horsepower and mileage gain of the...
  19. 89-93 Powertrain
    I just got a 90 model non intercooled 12 valve donor truck. I had to get a new lift pump to get it started. Once i got it started it immediately tried to runaway/overfuel but i can kill it with the fss. I havent let it go for more than 5 seconds before killing it. I back the power screw out 3...
  20. 94-98 Powertrain
    I have been battling this problem for awhile now.. I guess my question is, If I have the motor at tdc should I be able to see the timing tooth in the ppump if set at 18 degrees advanced? Cause I’m not seeing it in the hole at tdc
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