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4L65E Upgrade - The Mega Monster
- 4L65E Upgrade - The Mega Monster
 Inside a Monster Transmissions’ 4L65E upgradeIf you own an automatic equipped GM vehicle, you've probably felt the dreaded slip before. One day, everything is fine, with crisp shifts and smooth operation. The next day, it's all over the rev limiter on the 2-3 shift and you're suddenly feeling down in the dumps. Unfortunately, it happens to all of us at one time or another and it's usually right after you spend all of your hard earned cash on a new speed part or power adder. If you've never been inside an automatic transmission before, it can be a terrifying experience. Seriously, it looks like it works on magic, fluid, and money, which is almost accurate if you don't really understand what is going on. Luckily, there are plenty of quality transmission shops that can rebuild your transmission without an issue, taking a 400-hp capable factory unit and turning it into a 650+ horsepower tire fryer. And, whether you're going to have someone go through your slushbox for you or you're going to try to tackle it yourself, it's important to understand the key parts of the transmission and how each one works. Photo Gallery: 4L65E Upgrade - The Mega Monster - GM High-Tech Performance Magazine
Photo Gallery: 4L65E Upgrade - The Mega Monster - GM High-Tech Performance Magazine
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Part 2 - 10 Second ZL1
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Part 1 - 10 Second ZL1
- Part 1 - 10 Second ZL1
 We take the ZL1 and put through its paces with a little baseline testing.As a builder of the esteemed HTR series of fifth-generation Camaro SS's with an upcoming ZL1-based series, Redline Motorsports was eager to be on the forefront of testing the 2012 Camaro ZL1. Owner Howard Tanner was lucky enough to purchase one of the first automatic ZL1s, with a handful of modifications already stock-piled in anticipation at Redline's new Pompano Beach, Florida location. A mere 3-hours' drive from GMHTP headquarters, we were on stand-bye waiting for Howard to take delivery and head to Palm Beach International Raceway for a private test session on April 18th. While a sunny 90-degrees with 1,740-feet of DA wasn't exactly ideal, it was definitely a great test for the sophisticated E67 computer and the ZL1's upgraded intercooler system. Prior to the test session, Redline fabricated and dyno tested a cold air intake before returning back to stock as well as installed a 160-degree thermostat, removed the washer tank (for the intake fabrication), and installed a line lock for easier burnouts. All else was as delivered from GM including the tire pressure. Photo Gallery: Part 1 - 10 Second ZL1 - GM High-Tech Performance Magazine
Photo Gallery: Part 1 - 10 Second ZL1 - GM High-Tech Performance Magazine
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