machine shop help

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Jan 18, 2014 | 12:53 PM

Montana4x4xFord

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machine shop help

im thinking about getting my 360 bored.030 over , and i was wondering of what i should have them do to the block, how much would this cost me just for machine work??

Jan 18, 2014 | 02:04 PM

HIO Silver

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From: NorCal

Quote:

Originally Posted by Montana4x4xFord

im thinking about getting my 360 bored .030 over , and i was wondering of what i should have them do to the block, how much would this cost me just for machine work??

It's really not a matter of what you want to have done. Rather, it's what the block NEEDS to be done. The shop will inspect the block and let you know what should be done. The potential work might include:

Line bore the mains
Cylinder boring. Some don't need it.. a dingle ball hone may be all that is required to prepare the bores.
Decking to square the cylinder head surface to the crank centerline.
Resize the rods

There are also options like sonic checking, magnafluxing, filleting of journals, chamfering oil holes, Glyptal application, balancing, blueprinting, main studs/rod bolt upgrade, etc.

In terms of boring a 360, that's not much bang for the buck given everything else that will need to be done for a 'typical' rebuild. It's torn down already so ya might as well up the ante and rebuild it to a 390. That's a better value per dollar input.

Here's the typical process:

Even before delivering the block, you need to do your homework and talk to the shop and let them know of your plan. Get their price lists!!! Ask them what their the typical turnaround time and what their workload looks like. You'll need to decide if they will be assembling the shortblock or if that's something you will do.
Select the shop to do the work and let them know it's on the way.
Deliver block, crank, rods and pistons. Some shops prefer to do the teardown and some shops are OK with delivering it in pieces if the parts are clearly marked which main, rod bearing, and cylinder they came out of.
They'll take the block, bake/clean the block, and then start measuring.
The shop will inform you of the block's condition and provide recommendations. Btw, always replace cam bearings. If it needs cylinder boring, you'll need to decide whether to get new pistons or oversized rings. Your call.
You authorize them to get the required ("builder") parts or you go shopping at Summit, Jeg's or wherever for parts that meet the required specs (.010, .020 under main and rod bearings, standard, .030, or bigger pistons, rings, gaskets, etc.).

Machine work varies by shop and geographic location. Ask your shop for their price list. Personally, I'd budget $750-$1000 just for machine work on a V8. Add another $500 to $1500 for parts. Again, it depends on the parts you want or need.