Video: How to Measure Rocker Arms & Check the Rocker Ratio
It should go without saying that correct rocker arm specs are something you want to get right the first time. But measuring a rocker arm isn’t as straightforward as you […]
Mailbag: Using Rail vs. Non-Rail Rockers on Early Small Fords
Q: I have a question about a 289 V8. I have rebuilt the engine and replaced the stock heads with a set of 1968 302 heads rebuilt by a local […]
SEMA 2018: 15 New Products for Your Street Machine or Muscle Car
LAS VEGAS, NV — What’s the latest in street performance parts? There’s no better place than the SEMA Show to find out. More specifically, the new products section at the show […]
Ask Away! with Jeff Smith: A Good Camshaft Suggestion for a Modified Chevy 383 Stroker LS6 Engine
I have a 5.7L LS6 engine out of a 2005 Caddy CTS-V that dropped an intake valve with just over 50K on the odometer. The damage was not too extensive (no […]
Project 1,000: Follow Along as Summit Racing Builds a 1,000 Horsepower, Twin-Turbo 6.0L LS Engine
OK, so 20 years ago, if you told someone you could hit 1,000 horsepower without a top-tier racing R&D team in your back pocket, you’d probably get laughed at. Nowadays […]
10 New Products for Modern Muscle Cars we Spotted at the 2017 SEMA Show
LAS VEGAS, NV—This one’s for all your late-model lovers out there. The next generation of American performance cars is well represented at SEMA—as project vehicles and in new product development. […]
Ask Away! with Jeff Smith: Improving Fuel Economy in a Quadrajet-Equipped 350 Chevy Camaro Z28
I have a 1980 Chevy Camaro Z28 that’s in really good shape with the stock 350 and the original Quadrajet carburetor. The car is all stock. Instead of making more […]
Monday Mailbag: Camaro Questions: 305 or 350? Tranny Swap or Rebuild?
Got questions? We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re decoding mysteries of the IROC-Z. J.M. • Lake City, FL […]
Mailbag: Tuning for More Off-Idle Power
Q: I own a First-Gen Pontiac GTO with a 1970 400ci engine swap, a two-speed automatic, and an open rear axle. I recently rebuilt the engine to stock specs, adding […]
Mailbag: Ford Cleveland 2V vs. 4V Cylinder Heads
Q: I’ve found that many of the best intake choices for the Ford 351C are for the engine with 4V cylinder heads. What is the biggest difference between the 2V and 4V […]