[jlee910]

I say neither. All LS engines have an in block hydraulic roller cam. The new modular Fords have dual overhead cams. This means that initially, the DOHC set up with outperform and even get better gas mileage in some cases, but over time, the timing chains will stretch and the fuel economy and performance advantages will gradually disappear. I'm working my way to a Factory Five Type 65 Coupe and plan to drop a Ford Racing 427 in it. The 427 has comparable power to the LS7 and also has a hydraulic roller cam, but it does not require the exhaust, dry sump system, engine mounts.... Modifications that would cost thousands upon thousands on most kit Cobras and T65s. I believe the Ford modular engines would meet 200,000 miles with regular street use before they required new timing chains. (My Dodge 4.7 needed them at 120,000. It was to the point of misfiring.) I know a few people with LS1 and LS3 engines that have upwards of 400,000 miles without a problem. Due to my experiences, I would go either Ford or Chevrolet. Chevrolet's cam-in-block engines are generally newer and lighter, thus more expensive. If you want a flawless car you can pass all of the way to your grandkids, steer clear of DOHC engines. My current car is a 2006 Ford Mustang GT with the factory 4.6 3V. I wouldn't hesitate to circumnavigate the country in it, but by no means, do I think it will last like a hydraulic roller cam engine. It's all in your choice. For the price, a Coyote can hardly be beat, but I want something I can retire with and never have to touch with a wrench again, so I'm sticking to hydraulic roller cam engines. I've had enough lemons for a lifetime. Not all lemons make lemonade.

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Current: 2006 Ford Mustang GT 4.6 3V JLT Stage 3 CAI SCT X3 Tuner
Future: Factory Five Racing Type 65 Coupe Ford 427 & Tremec 6 Speed Manual