Ls9
07-16-2006, 02:20 AM
#21
Originally Posted by ScottyRocket
Yes, it will be supercharged....AKA LST... So much for mileage.
GM needs to make a 1000hp car and get 50mpg while doing it. 
Seriously, who buys a 600+hp car and cares if you don't get 30mpg. 
07-16-2006, 08:17 PM
#22
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Originally Posted by Cyborg
My car gets 30 mpg all day long on the hwy at 60 mph in 6th gear.
Originally Posted by ScottyRocket
I have yet to seem them make a gas v-8 engine get 30mpg ave. in a real world driving
07-17-2006, 09:35 AM
#23
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Originally Posted by speed_demon24
OMG a 600+hp vette, but it won't get 30mpg GM needs to make a 1000hp car and get 50mpg while doing it. Seriously, who buys a 600+hp car and cares if you don't get 30mpg.
GM needs to make a 1000hp car and get 50mpg while doing it. Seriously, who buys a 600+hp car and cares if you don't get 30mpg. I agree, I don't care what a typical vette buyer wants or cares about either. It is pretty funny how far some of you guys take the discussion.
I'm not here to start a bitching contest. My main gripe is the intent of the constant HP increases in all the GM v-8 engines, not just for the high end crowd. I'm not mad at GM for doing this, i was just questioning the intent. With all the forcus on oil today, GM still is marketing themselves as the HP kings.
I would rather them worry about the average joe and what the majority of the buyers are looking for. Then have GMPP do all the upgrades aftermarket style for all the engines. That's what everyone on here does anyway....get the car and then upgrade it.
And for the guy who asked if i even own a ls powered vehicle....Nope! However, i am building an lsx engine(maybe more) for a special application. That's enough for me. I work with them plenty at work.
07-17-2006, 05:22 PM
#24
Originally Posted by ScottyRocket
So your saying GM can't design engines? I have yet to seem them make a gas v-8 engine get 30mpg ave. in a real world driving schedule....now cram more air/fuel into it.....i doubt the LST will be any different. I'll let you know when i hear more. BTW, your comparing a 300-400hp engine to a 600hp production engine.
I fully expect ~26-28 MPG out of my 6.0L cam/heads ~450 RWHP RX7 with 4.10 gears and a stalled automatic. If you TUNE the vehicle correctly and keep your foot out of it, you can get plenty of gas milage. That said, with the way I drive the car, 18-19 MPG would thrill me.
Also, FYI a properly designed/tuned blown (this includes turbos) engine should have a higher efficiency then an N/A engine; higher efficiency equates more MPG per given HP request. The problem most people have is keeping their foot out of it in their nice blown V8s.
I've borrowed my parents 5300 vortec powered Silverado Z71 3 door/standard bed and achieved 25 mpg highway, unloaded. It's all about proper technique, tuning and maintenance.
That said, I don't give a damn if the LS9 gets 18 mpg. I want GM producing blown V8s. In a perfect world it'd have a screw type blower instead of the roots junk that US manufacturers stick with.
07-27-2006, 02:25 AM
#25
Originally Posted by ScottyRocket
"Yea, it gets 60mpg, but i don't touch the gas, the engines off and i'm going down hill while slipstreaming(Drafting for the nascar crowd) a semi"
I actually did that for about 800 miles today (drafting)... I got DAMN good gas mileage, averaged 36 mpg
going 80 mph after going all night (temp below 75F).I hit Texas though and at 70 mph at 103F I dropped down to 23mpg, plus all the semi's turned into ******** so I had to quite playing around
. 