I am currently working on a 3.0-4.0 engine swap and had a question about mounting the engine to a stand.
Does anyone know what size bolts I should buy to attach my 1992 4.0ohv engine to an engine stand?

 

Engine stands all use different mounting arms so can't say, you almost always need longer bolts
Best bet is to measure the sleeves on the engine stand, then take a bell housing bolt with you to parts/hardware store to get correct thread and length
Get plenty of washers as well, they are cheap and handy

4.0l OHV uses M10x1.25 bolts

 

My bad; I should have better explained my need. I was hoping to get the thread size as I can measure my stand and add 1/2 inch or so. I can use washers as spacers so the length doesn't need to be exact.

Does anyone know the thread size; is it metric or SAE?

 

Didn't Ron just tell you or is that after the fact ?
M10 X 1.25 pitch thread.
Metric.
If you're still not sure just remove one that's accessible from underneath and use that as a sample.
Pretty sure that they would be the same on the 3 litre.

 

Oops, I missed that; thanks, I should have all I need.

 

FYI the bolt size is actually M10X1.50.

 

Thanks for the update and correction