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Welcome to FTE. I moved your post to this forum where you might get better results. It's a toss up here as to using the 460 (385 series) engine forum or the truck forum. Since 460s did not come in the mediums usually discussed in Large Truck, I think this might be a better place.
Thanks for everyone's help. According to the Ford Direct parts web site, the starter bolts are both the same size, 3/8" with a 16 thread twist and 1.38" in length. I think the length is wrong because the top bolt I pulled out was 3" inches long and the twist and diameter bolt is correct.
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.