Sorry, guys, but this was absolutely the best freakin' thread ever (and I've read the other Dragsta threads...)! I haven't laughed so hard since I can remember. Thanks to everyone who contributed to the humor, whether intentional or not, and you know who you are. Thank you, thank you, thank you! To Dragsta: I totally understand the over thinkin' and over obsessin' thing, dude...Don't sweat it...We all do it to one extent or another. I know this post is going to bump this thread bttt for the next unsuspecting guy, but...
Dragsta, I hate to burst your bubble but it is no longer a "stock ****ing truck" (your words, not mine). You have an old truck with a *new* (relatively speaking) transmission in it. It is in no way shape or form a "stock" truck anymore. it is now a modified vehicle. As to the pinion angle that several guys have been asking about, unless the new 5 speed and the original transmission (3 speed?) are the EXACT same length then the angle MAY have changed. It is not the angle of the trans in relation to the engine that is important but the angle of the driveshaft in relation to the trans and rearend that is important. a difference of 2-3 degrees can make the difference between a smooth running truck or one that shakes the **** out of you. If the new trans is even an inch longer than the old trans that is enough to throw the difference in the angles between the trans & the rear end off enough to have a pronounced vibration. In the past, I have swapped a saginaw 4 speed out for a Camaro T5 in an O/T car & in my case the T5 was almost 4 inches longer than the stock trans. I had to change the angle of the trans to eliminate a vibration. Try to take everything with a grain of salt. If several people are suggesting the same thing, maybe you should consider checking that particular thing. Even if you are convinced that it has nothing to do with your current issue, it will be worth a few minutes to verify. This board has a wealth of knowledge and many people who have the "been there done that" factor. Many of us have ****ed lots of stuff up in our automotive adventures and will gladly share our knowledge with someone who will listen to the advice so they do not have to make the same (sometimes expensive) mistakes. The people who ask for help or opinions & then tell people who offer up idea's that they are wrong soon get to be the people that nobody wants to help. Not trying to sound like a ****head (even though it is going to sound that way) but from some of the threads you have started, that is the road you are headed down. I hope that you have the issues with your truck finally worked out but, if it starts to vibrate again, just for ****'s & giggles...... Check the pinion angle.
I really think that the pinion angle conspiracy theory is horse ****. I don't think its that far off, time will tell with u-joint life and a possible but remote shaft failure. I know its easy to fixate on something like this. Give the kid a break and see how it plays out for him. Lots of other guys have done the same swap and didn't have to jump through a flaming hoop regarding pinion angles. Bob
#### Great !!! So it's Safe to say We Have Heard The End Of This ??? And Post after Post of ****ing rambling will be OVER ??? >>>>.
I just have this feeling that something else unknown is waiting in the wings to "**** the bed" on him. He has no vibration now, for a 3/4 ton Chevy truck that's a feat in itself. Give him applause for sticking with it and taking tons of ****, well meant or not. So I see the pinion angle debate as a total red herring or why they put cheese on the altar at an Italian wedding (to keep the flies off the bride). Bob
ok so you have the stock mounts, motor mount at or near the front of the engne, trans mount at the bellhousing, these trucks never had a trans mount at the tailshaft, none that i have owned anyway, the whole pinion angle part of this thread is being lead by people who have never looked under the hood of one of these trucks, someone must of made the tailshaft trans mount because they didnt understand you dont need one, it sound to me like there may never have been a vibration just the floor pan rattling against the trany.
I've owned more than a few Chevy trucks of this era, one of the things of beauty about them was the bellhousing with the frame mounts. Incredibly strong, no doubt. I've had them with the 3-speeds and SM420 4-speeds. I've never done a T5 swap, would the aluminum case do well being unsupported with no mount? I'd hope that whoever did such a swap would make some attempt to keep the driveline in the same plane as it was issued with. 90%... well, maybe 50% of us here would know to do that. My only experience with these trucks was to use the 2-piece drive shaft with the center hanger bearing. If the owner had the old hanger bearing ***embly in his parts stash, it could be used to determine where the new ****** mount should be. Bob
All of you guys that are saying that the pinion angle will change if you install a longer or shorter transmission than stock are, frankly, full of ****. If the centerline of the output shaft of the transmission is the same distance above the transmission crossmember (or whatever reference point you want to use) as the stock one was, then the pinion angle does not change. The pinion angle is based on the difference in angles between the centerline of the pinion shaft and the centerline of the transmission output shaft. So the only thing that a shorter or longer transmission will do will change the angles at which the u-joints in the driveshaft have to operate. This ***umes that my second sentence in this reply is the case with whatever replacement transmission you have installed. Note that different transmission crossmembers, transmission mounts, and motor mounts can all affect the pinion angle. Also note that the same three can be modified to correct a wrong pinion angle, as can shims in the rear axle leaf springs, if the vehicle has them. Restating, a longer or shorter transmission does NOT alter the pinion angle, if the pinion shaft and transmission output centerlines remain the same. Please STOP propagating incorrect information. If you don't understand something, then don't pretend to know that you do.
changing the lenth of the trans will change the u-joint angle, but it shouldn't have a negative effect because it would change both u-joint angle the same amount, if the stock mounts are still being used and are un-modified then the trany mount is pointless and i'd just take it off, tri 5's didnt use a trany mount and i have run muncies like lots of other people have without a problem. and again i say there was no vibration just the trany cover rattling against the trans.
Have you checked the u joints for freedom of rotation in all directions? That and being phased correctly are key. Hope you get it squared away.
the angle of the driveshaft changed slightly but not the angle of the trans as it relates to the rear-end and that's the pinion angle everyone is talking about. that can't change because the trans bolts flat to the belhousing just like my old trans. i drained my trans fluid again today and it looked good so that damage to the trans has been halted. i filled it back up with "high mileage" ATF. i got the rear wheels balanced too. i also took the opportunity to change the differential oil.
i don't know why some people here have a hard time understanding this... it was pointed out before too. this T5 did have a rear trans mount from the factory. i checked it several times and it's not pulling nor pushing on the tailhousing. i don't know for sure if i need it or if it could be causing a problem but i feel better with it on.
i'm going to send you a christmas card every year until i die... i've been ridiculed and disrespected for saying the same thing many many times.
The centerline of the transmission NEVER changed, so I was baffled about what road the m***es here were going down. The good thing about your set up is that the bellhousing mounting to the ch***is pretty much locks it in. I think you'll be ok changing the fluid to the ATF you mentioned. There is always some amount of metals floating around a transmission or rear end. Just more evident with the ATF. You should see what I've seen in pans of automatics. Bob
I have you on ignore, why am I even seeing this post. If you knew your *** from a hole in the ground, you'd be dangerous. Thanks for living up to your ID name. Bob
Stay tuned,a piece of tin in the floorboard and magically the truck is fixed.come on Dragsta trying to make yourself look good ain"t working,but at least you finally made a friend.You and Bob are basically just alike,one minute you say one thing and then 2-hours later come back with completely opposite statements.
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