main distorsion stud vs bolt.

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Post  torino501 on July 14th 2013, 2:36 pm

my machine shop asked asked if I was going to run main studs in my frpp boss 351 block.he said due to the torque differences it can distort the mains enough to have to rehone the mains.the block came with bolts in the mains.just how much diff can it really make. on a production block I can see it but an aftermarket block...?just how much distorsion is there?

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Post  Lem Evans on July 14th 2013, 5:40 pm

For most appliactions the bolts that came with it will be good.

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Post  cool40 on July 14th 2013, 10:19 pm

the bolts are stronger than the block they're in,use them. Smile 
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Post  Paul Kane on July 15th 2013, 11:05 am

torino501 wrote:my machine shop asked asked if I was going to run main studs in my frpp boss 351 block. he said due to the torque differences it can distort the mains enough to have to rehone the mains...just how much distorsion is there?
One cannot know for sure until the alternate fasteners are installed, torqued per manufacutrer's recommendations, and the main measured and evaluated. It may or may not need align-honing.
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Post  IDT-572 on July 15th 2013, 12:19 pm

I think the norm has always been if you change fasteners a line hone is in order. I check all mine when installed and see what happens. My findings are most do not need anything.

If I do dust them, it's to open them up more to the high side.

I have also almost completely quit using studs. I have been using a good quality SHCS's with aftermarket 4 bolt caps and stock 2 bolt caps with good results.
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