Quote:
Originally Posted by mikels
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.
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Mike, great post... very impressive results on both of the engine builds (SC & NA). Both engines have very nice linear HP and Torque curves. Question for you…. what is the difference in weight between the SC engine and NA engine? I’ve always wondered how much extra weight is added on the front of the car with the super charger set up.
To the OP... Comparing a carburated engine to EFI... I have a 670 HP 427" EFI LS engine...and like Charlie... I get 20 plus mpg cruising on the street. You just can't beat the technology and efficiency of the new engines. I know that I would never do another carburated engine build after running the fuel injected LS engine. You can run higher compression, larger cams, and make more HP, while still being streetable.
Once you get up around 600 HP at the wheels it's all good. For what you want to do the super charger sounds like the best bet
