CRG Discussion Forum

Camaro Research Group Discussion => Restoration => Topic started by: 68Zproject on February 25, 2008, 01:29:10 AM

Title: 68 Z motor mounts
Post by: 68Zproject on February 25, 2008, 01:29:10 AM: I'm confused again after reading some posts on the MM issue with 68's and 69's. I have the original frame mounts on my 68 Z28. I have a '70 CE 302 in it. The engine mounts that came off it said made in China so I got the engine mounts at Rick's for the original frame mounts (EP89). Is this the right set up for this combo or do I need to get different engine mounts? I've got a lot of vibration over 70mph that is speed related and not RPM. I've turned the u-joints around to no avail. Thanks.
Title: Re: 68 Z motor mounts
Post by: Gramps69Z on February 25, 2008, 01:55:19 AM: Did the virbration start after changing the motor mounts? A high speed virbration sounds more like a wheel, tire balance problem to me.
Title: Re: 68 Z motor mounts
Post by: 68Zproject on February 25, 2008, 04:10:22 AM: No, the engine was rebuilt so I didn't go too fast until I got some miles on it. It could be all the above, its just really vibrates in the transmission area. I just want to make sure I have the right set up for the motor mounts. After reading posts and the info CRG has about the incorrect engine mounts causing vibration etc., I wanted to rule this out and then go to the driveline.
Title: Re: 68 Z motor mounts
Post by: firstgenaddict on February 26, 2008, 10:31:04 PM: Sounds like the tailshaft bushing in the trans... if that is what you determine it to be... take the trans out... I did it in the car... next to impossible...
Title: Re: 68 Z motor mounts
Post by: 68Zproject on February 28, 2008, 02:36:19 AM: Tranny inside is all new. Still wondering if I have the correct motor mounts.
Title: Re: 68 Z motor mounts
Post by: 68Zproject on March 05, 2008, 01:30:12 AM: Does anyone know if the EP-89 part number motor mounts at Rick's, are correct for 68 Z with original frame stands?
Title: Re: 68 Z motor mounts
Post by: 68Zproject on April 21, 2008, 04:56:14 PM: It was the driveline out of balance. I changed the yoke and that threw it out big time. I got it balanced and took it up to 90 with no vibrations.