Author Topic: Tremac T-56 conversion  (Read 8742 times)

Offline 79SilveradoK30

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« Reply #15 on: October 06, 2002, 01:39:00 PM »
Here are some answers to previous questions:

1. Yes, my truck has 4.10 differentiald.
2. Yes, the 4L80-E is the electronic overdrive extension of the TH-400.

Offline RSBAD454

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« Reply #16 on: October 10, 2002, 03:43:00 PM »
the 400 may put the 350 to shame, but who was talking about a 350? i was talking about a 502 truck replacement motor compared to the 400......and yeah right the 400 is going to get great gas especially if its carbuerated.  

“If you're listening to a rock star in order to get your information on who to vote for, you're a bigger moron than they are.”

Offline 79SilveradoK30

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« Reply #17 on: October 13, 2002, 12:39:00 PM »
Oh yea, and a 502 is gonna get any better mileage than a 400?

Who said I was even using the 400 in my truck. I specifically stated that it will be ressurected in a future project of mine. READ: Not in my truck.

Offline VileZambonie

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Re: What?
« Reply #18 on: October 21, 2002, 07:06:00 PM »
I will agree with getting rid of the full time transfer case or at least converting it. If you are trying to acheive better fuel economy, You can fine tune your fuel system and ignition system to give you your optimal performance, but more importantly, what is your final drive ratio and what size tires do you have?

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Offline phaon1

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trannies and stuff
« Reply #19 on: October 22, 2002, 09:30:00 AM »
I have a built 700R4 behind about 400hp and 425lbs of torque in my 81 K10 (a built 350 engine).  The tranny has handled it just fine.  I can pull my dad's big dual horse trailer in OD (with two horses in it) on the level for about 13.5 mpg.  Going up hills I grab third gear when my tranny temp guage starts climbing a little.  I think the trailer goes about 8000 lbs loaded.
My suggestions (and I have worked with 700R4's for while - they are better than most people make them out to be) are to buy a new towing 700R4.  You also HAVE to ditch the full time 4WD if you want any mpg.  Just pick out your transfer case first, so that you can order the tranny with the correct tailshaft installed.
You should be able to do both for, at most, $2500.  That's with a new tranny and a used transfer case.