Tap and die sets include a gauge that calculates threads per inch. Select the corresponding die that matches with the reading on the thread per inch gauge, and set the die in the handle that comes with the set.
The IROC-Z model of the Chevrolet Camaro first made its public appearance in 1985 as an add on option to the 1985 Camaro Z28 model. But its origin began long before that. IROC stands for International Race of Champions which is an automobile racing series similar to what NASCAR is.
Don Yenko, the son of the founder of Yenko Chevrolet, was the man behind the '69 COPOs, and was probably the best known and largest supplier of muscle cars back in the 60's and 70's.Don started using GM in 1965 to get special Corvairs, then moved on to transplanting 427s into Camaros in '67 and '68.on Yenko creates a 1/4 Mile Beast. Donald Yenko (May 27, 1927 â March 5, 1987), also known as Don Yenko, was a race car driver who was best known for creating a high performance version of the Chevrolet Camaro known as the Yenko Camaro.