whats the best 1/2 inch impact wrench/gun for rod bolts and main cap bolts? i want to get mine really tight. thx in advance for any info. ratman

Don't tighten those fasteners with a tool used to tighten lug nuts! Use a high quality torque wrench and stretch those bolts in steps. 3 steps is good five is great, don't rush it enjoy it.
Quality pays it doesn't cost.

As was said, get a torque wrench...

just kidding... i got bored and wanted to see if anybody was awake,

Power tools and engine assembling don't mix very well. Power tools may be used ONLY for removal/dissassembling a motor.

I figured someone was trolling with a thread like this. Then again, you never know.

Power tools work great for dis-assembly!!!

I use a 1" impact with a torque multiplier to snug up my rocker arms on a new set up.

i tighten my carb studs with the same 1" impact as above...

Before I got to the second post I figured you where kidding from your other post. Some dont know ya