Yesterday I drove away from a stop with the gear selector in first. I manually shifted into 2nd at relatively low RPM (maybee 3000). It chirped the tires as it usualy does and then I heard a "Bang" and lost forward drive. Coasted to a stop; tried all forward gears and none of them work. The engine revs and there is a distinct whinning sound from the trans. I found that reverse still works. I drove it 3 blocks home in reverse.

I believe I had already broken the overun sprag because I haven't had any engine breaking from downshifting for the last year or two. Any guesses as to what's broken this time? Anyone want to guess what a rebuild may cost?

I'm thinking I may just go ahead with the World Class T5 swap I've been wanting to do.

 

 

sunshell, forward sprag ??? It's toast

it needs to be opened.

question- if you wanted a manual transmission why didn't you get a vehicle with one? I'll never understand kids who manually shift automatic transmissions thinking it helps performance or is like a manual.

 

Especially a 700 Times R Weak 4

 

you can hold it in gear and shift out when you want according to your power curve, if you got a good rebuild and you wanna chirp them, a light throttle auto shift will not do it, but a manual tap will ......... idk tho alot of drag racers use the manual valve body autos ...... alltho i do love the honda boys that put it in neutral to roll at lights and let off the gas to shift a manual

 

I understand the drag racing portion and tranny's built specific for the application. My comment is spot on for the avg driver and kids who want to "pretend" they have a manual.

What you describe doing with an auto tranny is one of the reasons that I've had nothing but manny tranny's for in excess of 1 million miles. I believe you have confused the 2 transmissions

My family sedans are auto trannys but my personal vehicles, only a manny will suffice

 

To the OP, imo your best bet is to pull the trans out, and tear it down and see whats broke and go from there, if you decide to rebuild it you're already ahead on labor for removing it and tearing it down, and if not you don't really lose anything, things come apart easier and quicker than they go back together Especially things like that, lol.


Well lets see, manual cars are harder to find, more expensive to buy when you do find them, and ultimately in a drag race an auto with some work to it will outshift a manual all day long, and when you start modding the engine the transmission's WOT shift point are no longer at the peak of the powerband, the solution is to hold it in gear till peak power, granted this requires modifications to the trans valvebody, but they are easier then trying to mix'n match the shift governors(I don't recall the name of the part that controls shift points in a non electric offhand), and besides, even if you get them to shift where you want them to at WOT, they might not downshift, or part throttle shift where you want them.

A manually controlled auto is the 2nd best transmission type(for all out performance) after a manumatic(ie. the newer cars with manual transmissions that have automatic clutches, and some of which can even operate in full autonomy(how come no one thought of that sooner is beyond me, its the perfect marriage of the lightweight, more efficient manual, to the precision and speed of an auto...?)) Though I suppose a CVT would beat a manumatic, but would probably ruin the driving experience imo.

And last but not least, manuals are fun when you open it up on a country road, when you're stuck in traffic on the way to work, not so much...

Oh, and not all of us "kids" (I'm 20, but an old timer would still be in their right to refer to me as a kid, whether I'm more mature than most of them or not) are running around in honda civics putting fart cannons and body kits on them trying to look/sound fast when anyone with half a brain knows better, some of us actually know quite a bit

 

fart cannons ..... when the ricers were heavy around here i was always leaving rice tickets on cars for fart cannons etc etc


i do agree i much rather have a manual for driving, but since a goos solid matcing number manual camaro was not to be found when i got mine, i setteled for an auto, that i had to moddify at first, there is only 2 reasons for me to ratchet the shifts and thats on the strip or to get a better WOT chirp into second when you feel like being a fool

i just noticed the OP said he had no engine braking, i have had that for a year too, i got another 700 sitting in my workshop that im going to install when this one finishs taking a dump, i know i got a screw up in my valve body from the first guy i had touch the trans, it just to the guy that is good with them burn up trans to figure that out, we though defective parts, but now we are sure its the valve body ...... we are going to rebuild this one back again with a new valve body and all the same mods, the one i got in my shop to go in is built alot stroger than this one

i carry my trans in and for a "drag strip" build is 600-750

 

The 700R4 can be successfully downshifted and upshifted with the right parts. The TransGo "modified" Performance Shift kit with the right boost valves, servos and accumulation will accomplish this. Downshifting a 700R4 you must give it throttle at the same time as you backshift the lever. It is the same as downshifting a motorcycle. That way you "match" the rpm's of the intended gear you selected "immediately". This will prevent the burning of the clutches and the abuse of the input sprag. A lot of 700R4's & 4L60E's have been successfully road raced. If you are serious about doing this type of driving, then the right fluid will help also. Go with Lubrication Engineers Monolec 7500. This fluid works very well when you road race as the transmission fluid gets a lot hotter from the continual upshifting & downshifting. Always add a large external cooler.

 

I manually shift mine at the track on teh street not so much unless I am doing a simulation run. And its better than a manual caus thier is no clutch pedal. IMO.

 

That's great info, all of us "kids" that "may have confused the two trannies" could definitely learn a thing or two from your "spot on" comment. Ha ha.

Project3.4Camaro-well said

 

I kind of disagree with shifting like a manual will damage it. Yeah,if you don't know how to do it (me, 20 and i dont know how to shift yet =( ) My dad did it and the car was insanely powerful but he was a truck driver for like 20 something years. He does it by ear and he matches the shifts perfectly. No damage whatsoever to the car. Plus, he downshifts and uses the engine braking to help him stop at a light. Yet, i do only have 13,000 miles on the car and the tranny.

 

well, since the thread has been resurected, I wonder if the OP will come back and say if any of our "guesses" were correct

 

yep most of the time in a manual i never use the clutch except for getting off of a stop, most truckers never use a clutch once rolling, but you prob allready know that


yea id like to see to but looks like Max is a no-show

 

Yeah, But, my dad refuses to teach me. So, i gotta learn on my own. I guess if you time the shifts right it wont damage the auto right?

 

main thing with the 700's is like pro built said is mantching your down shifts........ but for a manual you gotta learn like daddy did........ just trying

 

I'm not exactly sure what a downshift is or how to do it. The reason why i want to learn is to beat my dad in a race against his 2012 challenger rt. There's kids like 15 shifting like a manual even a girl i dated knew how to do it. She laughed at me when i said i was 20 and didn't know how to "handle a car" properly. I wont stand a chance with this crappy overdrive shifting.