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Old 01-23-2004, 07:10 PM
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Need insight on SBC / BBC motor mounts

I want to put a BBC in my 57 chevy truck. I've already got the motor. It's a 1988 454, currently sitting in a 1977 Cheyenne that was originally equipped with a 400 (I didn't do the swap).

The 1957 currently has a 235 six-cylinder in it. I see many aftermarket suppliers sell bolt-in crossmembers to mount SBC's, BUT are BBC's and SBC's setup the same for mounting?

I'm not buying an aftermarket suspension, and until I find front clip off of another car I don't plan on going that route either...stock baby.

insight appreciated.
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Old 01-23-2004, 08:54 PM
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Small Blocks and Big Blocks will go in on the same mounts. I don't think you'll have a problem. The thing you have in your favor is the tall hood on your truck. I know cars with lower hoodlines used different cradle towers to lower the BB's to get them under the hood but this isn't an issue in your swap. Mounting the BB a little higher makes it easier to route headers and exhaust also.
One suggestion would be to use the cradle towers out of the donor truck and adapt them to your 57. A little fab work on your part could save you some money...

Mark
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Old 01-24-2004, 10:54 PM
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Hmmm, I wonder if any parts out of the 77 will be useable on the 57. So basically all I need is that X-member then?

coolies.

there should be more than enough room in the engine compartment for the BBC plus a few dead bodies.
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Old 01-24-2004, 11:18 PM
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No need to change the cross member. find a set of towers for a 57 small block they should work. Or use the ones out of the donor truck and make them fit. They normally just bolt in.
Unbolt them from the cross member and leave them bolted to the engine, set it where you want it and weld them to the cross member if the bolts don't line up. HTH

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Old 01-25-2004, 08:19 PM
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troy--something like this?

Quote:
This is a complete kit for replacing those worn out original motor mounts. Out kit comes complete with everything that you'll need to make the job quick and easy. For use on V-8 trucks only.
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Old 01-25-2004, 11:23 PM
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I was referring to side mount from later model trucks.
But those will do the job nicely. Just be careful with the top bolt at the fuel pump drive rod, as you can lock it with to long of a bolt. HTH

Good Luck
Troy

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Old 01-26-2004, 07:01 AM
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thanks boss
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