Chevy 427

Mailbag: Why Does My 427 Engine Stop Increasing Power at 4,000 RPM?

You’ve got questions. We’ve got answers. We work with the Summit Racing tech department to tackle your automotive-related conundrums. This week, we’re exploring why a 427 c.i.d. big block Chevy street rod engine would stop increasing power once it hits 4,000 rpm. Q: I recently built a 427-cubic-inch big block Chevy for my 1937 street rod

[ Read More ]

Top 10 Engines of All Time (#5): Chevy 427

While Chevrolet did produce a select few 427-cubic-inch engines a few years prior (the Z11) for the Chevy Impala, the wildly popular Chevy 427 V8 engine became available to the general public in 1966. The engine won instant fans, because the powerplant offered versatility and piles of horsepower. The 427 powered vehicles across the spectrum

[ Read More ]

Mailbag: Recognizing the Symptoms of Worn Valve Springs

Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we examine the signs of fatigued valve springs. S.H. Akron, OH Q: I recently built a 427-cubic-inch big block Chevy for my 1937 street rod. The tall block engine has the following parts: 4-bolt tall block, steel crank, 9.0:1 pistons

[ Read More ]