We would build for the Blown Gas Modified Sports (BGMS) class where the record is currently 231.5 mph. Another record we were after was the Porsche marquee record for the 928 of 205.6 mph. Our math told us that – because we knew our final drive ratio, tire diameters and engine redline; and if our
First, Fisher’s a former winning sprint car driver running with the top-gun World of Outlaws and All-Star groups. Then, there’s the fact that he’s got the mind of a skilled surgeon when he probes the innards of his engines looking for more performance. The guy is a graduate engineer (Ohio State 1975), but his
It seems as if many cylinder heads are doomed to crack from the very start because of their lightweight construction and design. Aluminum overhead cam (OHC) heads, in particular, are often found to be warped as well as cracked. But so too are many pushrod cast iron heads. Cracks are often blamed as the cause
Closing up the gap between the tip of the rocker arm and the top of the valve stem reduces the pounding effect that can accelerate valve and rocker wear. Because of this, most of the push rod engines that have been built for the last 60 years have come factory-equipped with hydraulic camshafts and lifters.
November 2011 GM 3.4/3.5L Back in 1980, GM introduced an all newV6 that originally displaced 2.8L/173 cubic inches, but over time it grew into a 3.1L/191 cid, a 3.4L/207 cid, a 3.5L/213 cid and finally a 3.9L/237 cid version in 2006. Contributing Editor Doug Anderson takes us through the