![]() |
No tranny mount on my TH400? 70' c10
I'm in the middle of an engine rebuild and currently have the engine out but transmission is still in, sitting on a block of wood and still has the driveline hooked up. When I pulled the motor I was very surprised to see that there is no transmission mount. It's bolted to the motor, and then hooked up to the driveline. I always wondered why it felt weird when I would jump on the gas at higher RPM's, and I think this is the issue. Truck is a 1970 C10, with a th400 and 350 SBC.
Should there be a trans mount? And could this be an issue IF the truck was previously a manual transmission? |
Re: No tranny mount on my TH400? 70' c10
Yes, Your truck was manual at one time evidenced by the cut out cross member . Yes you need a automatic trans cross member to keep it from "winding up" behind your new rebuilt engine . Check with member DLtruck he has been listing a lot of cross members in the classified section lately . Do a vin check on your truck and it will give you some interesting facts .:chevy:
|
Re: No tranny mount on my TH400? 70' c10
I'm surprised you are still alive!! When you pulled the motor where the motor mounts trashed? And yes you DEFINITELY need a crossmember
|
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Hoping that once I put a trans mount I'll get more power to the ground and a firmer shift too. Seems like a flopping tranny would rob you of some performance
|
Re: No tranny mount on my TH400? 70' c10
So... Now that your going to have all the power from the new rebuild and after you install a new trans cross member . Whats the plan for the rear differential ? Because 100' burnouts with a one drive wheel wonder can be done with a 6 cyl with a 3 ott . Are you thinking POSI yet ? Yes ,I know what your thinking "does it ever end "? The answer is NOPE always one more thing to tweak to get it just right .:lol:
P.S. climb under your truck with a 4 inch grinder and grind the rivits off whats left of the old cut cross member (SAFETY GLASSES) You'll need the room to install the new cross member . |
Re: No tranny mount on my TH400? 70' c10
:wop: show us pictures so we know what exactly you have
|
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
wow... I mean.. WOW... how was it even still under there?? I mean... WOW!!
|
Re: No tranny mount on my TH400? 70' c10
This is when he finds the 12 inch long crack thats already in the trans bellhousing , And the worn out universals along with the slightly tweaked drive shaft ....:lol:
|
Re: No tranny mount on my TH400? 70' c10
Quote:
Make sure you check everything.. and I mean EVERYTHING. Put a wrench on every bolt and might as well change those motor mounts too. When I got mine I went over it with a wrench and found that the motor was not even bloted down at the mounts, along with many other bolts that were hand tight at best... |
Re: No tranny mount on my TH400? 70' c10
Quote:
When I bought the truck about a year and a half ago, I got it from a dude who got it from an old timer who also had a 10 second swb C10. I went to look at the truck and after the PO started it and I heard a big lumpy cam I was sold. I have been wrenchin for years but still didn't look over the truck very well at all. I loved it as soon as I turned the corner on his block to be honest. Only drove it once in a while, and recently when I tore down the engine J found some really nice 492 heads, a big Lunati cam, and a nice .040 over bottom end :)) SCORE. Also in my defense, there is a peice of metal that resembles a crossmember, however, the tranny isn't bolted to it. When I lowered the jack under the tranny after pulling the engine, the front of the trans came down 7 inches before touching the crossmember type peice that's there. Only good it would do is not let the trans fall all the way to the ground, if even that. |
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Perhaps a scatter shield should be added to the list of improvements:)
|
Re: No tranny mount on my TH400? 70' c10
That could be the reason for the "no power at take off" issue that you were having. Everything that was supposed to allow you to hook up was moving around instead.
Guess it really does not matter at this point but, hate to think that you are going through the engine for no reason now. Well, at least now you will know what you have. Time to start checking everything, and I mean everything. Now you don't know what else could have been Mickey Mouse'd. |
Re: No tranny mount on my TH400? 70' c10
Quote:
And I did the same thing when I bought mine after only hearing it run over the phone lol.. and then found out how bad it was once I had it shipped 800 miles home... hence the full frame off Im doing... |
Re: No tranny mount on my TH400? 70' c10
Quote:
|
Re: No tranny mount on my TH400? 70' c10
Quote:
The phone story makes me feel much better :haha: at least I'm not the only one. But hey, I wouldn't give my truck up for anything. And a frame off sounds like my next project |
Re: No tranny mount on my TH400? 70' c10
Do any of you guys have pictures of your crossmember and transmission mounts? I'm a little confused about mine. There IS a crossmember, but the transmission isn't bolted to it and doesn't even come close to touching the trans
|
Re: No tranny mount on my TH400? 70' c10
I don't see a pic. But the one you have that seems cut. That's a manual trans Trimmed to fit auto That bolts to bell housing and trans hangs off the back. Look near the tailshaft. Should be 2 bolts there near the back on bottom. The crossmember bolts there and on the lip of frame on each side. You should have a couple sets of holes there. I don't have any pics but pretty common setup and you should be able to find one
|
Re: No tranny mount on my TH400? 70' c10
I'm surprised you didn't have clacky noise with fan tapping shroud or cracked distributor cap.
|
All times are GMT -4. The time now is 07:19 PM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com