Yes, Mike, have heard of BSFC, use it all the time. Just make sure that you guys are not giving the wrong impression when you talk about it.
Claus, I'll bet that if you put the Nissan engine in your Firebird - not that you would - that you would get better than what you're getting now. Compare the vehicles and hp needed to push them before comparing the mpg and cruise efficiency. Although 22 US mpg is pretty good already especially with 500 hp! And yes, I'll admit that it would certainly feel like a free lunch!
I have parked my '69 for the last while in preparation for the next engine combo that will make around 450 hp and get over 25 US mpg at 70-75 mph. I want to be able to afford to drive it as much as I feel like.
