Quote:
Originally Posted by clill
Mayhem has a 887hp 427 Supercharged LS engine that Thompson built. It runs on pump gas, gets over 20mpg with the ac on and does it making only 10 lbs of boost. Between supercharged and Turbo-ed I would go with the Supercharger. A much more linear torque curve. I own both. Most turbo engines have low compression and until you nail the throttle they feel underpowered. The Supercharged car makes it all the time.
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Echoing Charlie's comments:
Having worked on many supercharged engines (as well as countless NA and turbo engines), I can tell you it is impossible to beat the overall driveability, controllability and outright power balance that supercharging provides. In particular with the latest SC technology like Eaton TVS superchargers.
I attached a graph for comparison showing Thomson's 427 Supercharged engine (from Mayhem) with one of Thomson's 442 cubic inch LS7's (from Corvette). Besides the power curves pointing out the very obvious, it does not begin to show the differences in driveability. (not sure how to place picture in post)
Both these engines make great power, run on pump gas, etc. - but with the SC engine, there is no 'special' instructions needed to drive it (other than be aware when applying throttle!). The NA engine continously reminds you what it's all about - and has some driveability characteristics that are not ideal.
I like an agressive cam and loping idle as much as anyone, but once you've experienced the overall package of a well done positive displacment blown engine...... well, it makes it hard to be satisfied with anything less.