Wanted to do a couple of upgrades to the old 1st Gen. Maybe a DennisT pin and a gov. spring along with the 190's to replace my old injectors. Can a stock 727 take it? The truck has around 260,000 on it. Ideas?

Scott

 

Just so you know your truck actualy makes 200hp from stock so I don't think you would see much power increase.

My dad had a 90 he rad the tranny rebuilt 3 times from the flex plates was rebuilt before he got it to. He finely put in a shift kit n never had any more problems with the tranny and new flex plate. All he had was the 4 inch exhaust and fuel screw to the collar.

 

Bosch 190's are smaller injectors than what's in there now, don't mess with the injetors in there now as they are pretty big from the factory and can support alot of power and run fairly clean....non intercooled trucks have bigger injectors from the factory than the 91.5-93 intercooled trucks, those injectors are much smaller and 190's would be an upgrade then,

Just get a Fuel pin, governor spring and do some adjustments to the throttle to make it get full travel and you'll be happy. The trans will take it.....

It is a good idea to pull the pan and adjust the bands and tweak the valve body a little bit, the thread on how to do all that is in the Sticky at the top of the 1st gen forum.

 

It all depends on what kind of condition the transmission is in. A stock trans can usually handle c.300rwhp if it is in good shape. The torque converter will slip a whole bunch though, and make it feel like the trans is slipping. But it's probably just the converter. I picked up 25 more hp with a lower stall converter vs the factory one.

 

Thanks for the info guys and especially on the injectors, didn't know they were smaller than the IC ones. I've been waiting to get the transmission gone over before doing any mods, so I'll check out the sticky.

btw, congrats on the hp numbers JQmile.

 

I've put 375hp and more down on different dynos with my bone stock A518 (which is the same as a 727 but with Overdrive) So yes these trannys are actually pretty stout, Don't listen to the people that badmouth them all the time. It should handle those few mods no problem, but like the others said, pull the pan, turn up the line pressure, adjust bands and shift points and put new filter and fluid in and it will help it hold the power a lot more and make it last longer. I would suggest to do that first before mods.

 

I'v been pullin a three hors trailer w/ my 91.5 d250 w/ A518 , with no problems (so far), trailer weights 4100(empty) at 60-65 i have to feather the throtle or you will be runnin 80 be for you know it. The pump was set up be fore i bought the truck.

 

it seems the tranny can handle the power, but what kills the trans is the heat that the converter makes.

 

Thanks man! If I had it to do over again, I would have tried to push the 727 a little harder. If you have the $$ My shopping list would include: transgo shift kit, alto clutches, steel planetaries, a billet input, and a Goerend converter.

My truck with a rebuilt 727 minus the shaft and planetaries held 500rwhp no problem.

 

Just to keep from getting confused later on ours are bigfer the ic injectors like almost twice the size.

 

That makes me feel a little better about doing some mods. I hate to mess with the tranny, it does really well for having not been touched except for fluid changes.


Thanks 9MM for the catch, my fingers and mind weren't working together and my written english is bad. I'm tracking with you, I should have said:

"...didn't know the 190's were smaller than the stock non-IC injectors."

 

I am a big advocate of the "If it feels good, do it!" theory.....if your trans slips under light load or constant rpm, it's one thing...under acceleration, it's another. If you feel "slip" under full throttle, it's probably just the converter.

 

the key to transmissions is keeping them cool HEAT kills them guicker then any thing else I use to run a 727 behind a 625 hp BB dodge with nitrous I ran 2 coolers & that trans lasted for 10 years I did freshen it up once but the only thing I replaced were all the rubber seals take it for what its worth you can thrash them but you cannot over heat them Did I mention this trans was in a 1978 Ram Charger 4x4 that scaled 4000# & ran 4.8 seconds in the sand drags also this was with all mopar parts not all the fancy stuff they sell these days

 

I'm sold, let the mods begin... (well, maybe just a few)

 

While heat my kill the fluid, it's torque that busts parts and spins/smokes the clutches.

Repeated heavy loads has a cumulative effect. Changing nothing in the stock/OEM trans, think of the old saying: "A candle burnt twice as bright, lasts half as long".