Guest Wes06 Posted May 19, 2005 Share Posted May 19, 2005 Hey guys, Just out of pure curiossity, what kind of gas mileage are you guys getting out of your Chev 350 z conversions? A rough (or precise) hp at the wheels # would help as well if you have it... Thanks! Quote Link to comment Share on other sites More sharing options...
jt1 Posted May 19, 2005 Share Posted May 19, 2005 When I drove my car on the street a good bit, it was in a ~325RWHP state of tune with a 700R4, 0.70 OD, and it would get 20-22 mpg if you drove it sensibly. Currently, on track, it gets about 5-6 mpg. John Quote Link to comment Share on other sites More sharing options...
Guest scarab73 Posted May 19, 2005 Share Posted May 19, 2005 my 327 gets over 20mpg under normal driving conditions, 375rwhp. around 8-10mpg with your foot in it. 73 240z 327 super T10 Quote Link to comment Share on other sites More sharing options...
Guest Wes06 Posted May 19, 2005 Share Posted May 19, 2005 does it really double your fuel economy to drive conservatively? Never thought it could make THAT big of a difference. Quote Link to comment Share on other sites More sharing options...
zeeboost Posted May 20, 2005 Share Posted May 20, 2005 This last tank I saw approx. 21 mpg -- mostly highway miles, but a couple of days I was going to be late, so I drove it pretty hard. The engine also has roughly 600 miles on it, so it's possible it could increase after a couple thousand miles when it's broken in. I haven't dyno'd her yet, but I'd guess approximately 350 rwhp coming from my 355, and the 6th gear in the T-56 sure makes highway driving nice . Quote Link to comment Share on other sites More sharing options...
waynekarnes Posted May 21, 2005 Share Posted May 21, 2005 does driving conservatively increase the miles per gallon ??? yes ... back in 81, in my 79 5 speed zx, bone stock GL, if i heavy footed it, i got 13 mpg around town, stop and go on expressway to work, everyday, 16 miles one way. that was spirited sprints between lights ... when i took it easy, shifted at around 2500 to 2800 rpm, mileage went up tp 17 mpg. i saw an occasional 19 mpg. that was around town in true stop and go, miss every light, sit for 2 an half minutes waiting for light to go green, 39 lights from home to work. 39 lights back home. freeway avg. 29 mpg with cruise set at 65, on a trip down 5 to pomona, got 32, with the defroster on ( means air compressor is running to dry the air ). i think the denser/cooler night air made a big difference in the mileage. if i ran at 70, 75 mph, mileage fell to around 25, at 100 mph ( yes ran a 1/2 tank at a steady 100 mph on highway 5 ), mileage was 19 mpg. this was with the air on. so, yes, your driving style influences your mileage ... for decent gas mileage, you want to get into high gear as soon as possible, without lugging or revving the engine beyond the middle of its torque range. lugging an engine, and not getting it into the proper temp operating range are two of the worst things one can do to an engine. short ( less than 10 minutes ) trips on a cold engine, just tear em up. water and acid damage to cylinder walls, bearings, most moving parts. combustion causes water, when engine gets to correct operating temp, the water burns off, doesn't combine with gases to form acid. acid trips are bad for your engine. Quote Link to comment Share on other sites More sharing options...
Guest scarab73 Posted May 22, 2005 Share Posted May 22, 2005 does it really double your fuel economy to drive conservatively? Never thought it could make THAT big of a difference. fore sure! under normal driving conditions I shift at no more than 3k rpm with not more than 1/4 throttle, when I'm on it, I shift at around 5k rpm with the pedal at least 3/4 down. big difference! Quote Link to comment Share on other sites More sharing options...
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