Anniversary of first 426 hemi raced today

brian6pac said

Chrysler did some cool stuff back then, with a cast date of 2-8-64 to race day in 3 weeks, awesome.

Click to expand...

I read a story that the first Hemi’s made great power, but had a tendency for the block to crack in the cylinders when ran hard and long like in a 500 mile race. Those blocks cast and machined weeks before race day were an attempt to beef up the block where the cracks occurred. The change was successful.