Tech

I see where Summit Racing lists a TCI transmission that was originally a 4L80E – but they list it as a six-speed transmission. I’ve heard a little about this—did they add two more gears to the transmission? How is this different from the GM 6L80E transmission that is used in the Corvette or in the

In the first installment of our ’68 Mustang project build, we detailed the pre-install prep on our 408 cubic-inch Windsor from BluePrint Engines that would replace the original 289. Now it’s time to get it under the hood along with all the supporting parts that will help get the most power and reliability out of

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 recommending a camshaft, torque converter, and rear-axle gear ratio for a race-only ’86 Ford Mustang. Q: I have a 1986 Mustang project car with a 351 Cleveland engine. The four-bolt main block has been

Not long ago, few people had ever heard of an air shifter. Today, at every drag strip in the world, they’re about as common as a radial slick. Wherever they’re class legal, air shifters have turned manually shifted automatic transmissions back into “automatic” transmissions. The reason is simple: Well-executed first gear changes aren’t easy to

You’ve got questions. We’ve got answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re helping a reader troubleshoot a misfiring Mopar 440 in a ’69 Dodge Charger. Q: I have a 1969 Dodge Charger that is giving me fits. It has a 440 high performance engine that is basically stock except for stainless valves,

I have a question. I am building a 427 cubic inch Dart motor with LS3 heads and a Kenne Bell 4.2L blower. I am looking for maximum horsepower out of this motor. What compression would you recommend? The blower is capable of 32 pounds of boost and it will run on E85. Thanks. – T.B. Wow,

I recently bought a really awesome street Camaro with a 355ci small-block, a Super T-10 4-speed, and a 12-bolt with 4.10 gears. The engine runs really great and pulls hard all the way to 6,500 rpm but it has this really bad knock when the engine’s cold. When I first took the car on a

You’ve got questions. We’ve got answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re suggesting upgrades for a supercharged 1959 Chevy Pickup with a 400 small block motor. Q: I want to build a 400 small block Chevy to put into a 1959 Chevy pickup with four-wheel drive. The truck will not be a

Engines are often identified by their displacement, like the ubiquitous Chevy 350, Mopar 440, or Ford Five-Oh. But displacement alone isn’t always the best differentiator, and nowhere is that more evident than with the Ford 351 engines. Sure, ‘351’ refers to the engine size, but there were essentially three major versions of the Ford 351—the

  Conventional wisdom says roller rockers increase horsepower by reducing valvetrain friction—with the biggest benefits showing up at high RPM. But Engine Masters’ David Freiburger and Steve Dulcich are always willing to question conventional wisdom and will leave no horsepower sacred cow untouched. They’ve tested parts to see what really works, built engines to find the