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Old 08-06-2011, 08:06 AM   #1
solidaxel
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Re: Exhaust manifold ideas?

Quote:
Originally Posted by tmoble View Post
I installed a small block in a 57 pickup using mounts similar to those pictured above. Think about how much a fully dressed engine weighs and how long those motor mounts are hanging off the frame. Mine were bolted in and welded across the top. My truck was a street driven vehicle, no rutted dirt roads or mogul jumping. In 6 years of normal street driving the cantilever mount cracked the frame on both sides. After a few years of engineering school I couldn't even figure out why I was surprised it did that. Let's see, cantilever a heavy weight, concentrating the stress in a small area. What could possibly go wrong? As they say. Now my truck has a 2nd gen Camaro subframe where the weight of the engine properly sits on a crossmember designed to support the weight. Those ear things? Not so much.

The Ecklers link with the crossmember, that's what you want. The cracked frame is not pretty. I'd avoid the ebay bolt in ear things like the plague.
Was your frame boxed from the crossmember to the firewall on both sides?
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Old 08-06-2011, 10:22 PM   #2
Denee007
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Re: Exhaust manifold ideas?

Well, that's a great explanation, thanks! I was just looking at my stock manifolds today; they're cleanly blasted. Just won't know for sure I'd I'm going to use these or not. no hurry here! ; )
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