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Old 10-15-2013, 10:39 AM
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kevins2 kevins2 is offline
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Join Date: Dec 2011
Location: West Chester, PA
Cobra Make, Engine: ERA #795 427 S/C completed Jan. '14 - '68 FE 427 side oiler
Posts: 1,051
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Default Transmission mount shims

I did a search and found a thread where Bob indicated exactly what is stated in the manual - shim the transmission mount so that the center of the output shaft is 3.5" above the chassis cross member.

To accomplish that, I've added two additional 1/8" shims to each side (the ERA supplied mount included two shims - one for each side of the mount). So, I've achieved the 3.5" by adding 1/4" more and there is still a small angle between the transmission and the driveshaft - which Bob stated is also preferable to having it in a straight line - to better distribute the load on the universal joints. My concern is that the carb plane is already slightly forward (about 1/8" measured at the mounting bolts - back to front. The car is still sitting nose high and I haven't adjusted the ride height yet. So, the carb will ultimately be sloping forward even more once the ride height is adjusted. If I just use the shims supplied with the kit, the carb slope will be less but the angle of the drive shaft gets more pronounced and I'm under the recommended 3.5".

What have you guys done in this regard? Bob, what are your thoughts?

Thanks,

Kevin
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