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Turbo street cars inside please

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Old 02-13-2014, 03:56 PM
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Originally Posted by StrokerTA
haha, yes he has a Chevy 2500 crew cab short bed duramax... It has 35" tires, and a 3" body lift.. Has EGR delete, CAI, and a full turbo back exhaust, and a custom tune..
He averages between 22-26 on the highway... That's not uncommon at all...
Heck my F350, long bed, crew cab, dually, 4.30 gear, Powerstroke get's 18 on the highway.
Ahhh, thought you ment 6.0L gasser....that is still really good...sold my 2008 LMM DMAX that was tuned perfectly but only got 24 MPG MAX on the Highway....kinda miss having 550 HP and 900 lbft of torq with 4x4...
Old 02-13-2014, 03:57 PM
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Yeah diesels are a bit of a different beast to say the least.

As far as gas mileage on turbo street cars go that all depends on the rear gear, transmission, lockup, tire size, etc. It's very possible to keep it near stock mileage on the freeway and about the only thing you can be guaranteed is that it's not going to be better than stock unless it's been stripped and weighs 2800 lbs. LOL
Old 02-13-2014, 04:47 PM
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I'll pull high 20's and have done 30mpg on the highway with the TA in sig.
Old 02-13-2014, 05:10 PM
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Upper 20s on e85 with a 3.55 gear
Old 02-13-2014, 06:44 PM
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my yellow/gold car gets 26highway

stock 99 4.8
springs, isky 3x12 cam

on3 76mm

80e, circle d converter, 8.8 rear 3.55 gears
26 inch tall tire
Old 02-13-2014, 06:44 PM
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i just finished building a car, hopefully gets 30+
Old 02-13-2014, 06:57 PM
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I've heard of numerous guys out there getting great fuel mileage and make great horsepower numbers at the same time. Great to hear others are doing the same!!
Old 02-13-2014, 07:02 PM
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I daily the car in my Sig. Full weight still has A/C etc. Put down 635rwhp. Babying it around I've averaged 18 mixed with half city and minimal screwing around. I have a heavy foot though so I'm usually around 14-15. Tune is pretty rich.. hoping mileage goes up a little after my retune.
Old 02-13-2014, 07:03 PM
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yeah small cam, large gear turbo cars its not that hard to do.

its certainly not what we build the cars for but it is a nice perk eh?
Old 02-13-2014, 07:08 PM
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^ Its a nice perk. I daily mine so it defiantly helps. I also have a small 224/228 can and stock 3.42s in my Fab 9 w/ aluminum center section.
Old 02-13-2014, 07:21 PM
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My buddy has a twin 64mm 370 in his trans am and he pulls down 32 on the highway. Also makes over 900 at the wheels. But that is through a 6 speed and 9 inch with 3.45 gears
Old 02-13-2014, 08:30 PM
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I daily my chevelle and I get right at 20mpg on E85 if I drive somewhat normal and about 15-17 if I rape the car. I will take that any day of the week. I am around 900rwhp using a calculator. lol 3720lbs, PG, 3.42's, 30" tall tire.
Old 02-14-2014, 08:08 AM
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this thread is inspiring lol, id love 18+ im planning to daily drive the crap out of the new car, thinking a 3.25 gear th400 28" tire or so.. should work out pretty good.
Old 02-14-2014, 08:43 AM
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17-18mpg on the highway on E85, 10-12 in the city and my tune is no where near optimized for cruising. City mileage is terrible cus i cant not hit boost, it sounds too good to keep it quiet.
Old 02-14-2014, 08:51 AM
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I got 24mpg back and forth to FL. from Jersey.
That was running 8.5# boost, 575rw and a 9" rear w/ 350's and a 6 speed.
All with an old Incon TT setup.
Old 02-14-2014, 09:53 AM
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Originally Posted by StrokerTA
Not bad Nick. You normally have a short tire on the car too right? 26?
Yes I do. On occasion I have it on a 28 but for the must part it's on a 26.
Old 02-14-2014, 12:01 PM
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My 86 rx-7 (turbo buick 3.8 v6) on E85 I would see around 30 at 65 on the highway. 2.73 gear , 200-4r trans with lock up converter. Ran 10.50’s. Swapped in a glide and 3.08s and ran a 10 flat. Still over 20 highway with a 28” tire.


Current E85 8.6:1 5.3 79 rx-7 would get about 23mpg at 65.h 29” tire and 3.10 gears/glide/pretty tight 9.5” PTC conv. Mostly ran low 9's, did squeak out an 8 at the end of the year. Guessing the 10:1 motor in it now would do slightly better. I’m sure pump gas would give another 3-5mpg easy.
Attached Thumbnails Turbo street cars inside please-blk-rx-wheelie.jpg   Turbo street cars inside please-wht-rx7-wheelie.jpg  
Old 02-14-2014, 01:11 PM
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Originally Posted by StrokerTA
haha, yes he has a Chevy 2500 crew cab short bed duramax... It has 35" tires, and a 3" body lift.. Has EGR delete, CAI, and a full turbo back exhaust, and a custom tune..
He averages between 22-26 on the highway... That's not uncommon at all...
Heck my F350, long bed, crew cab, dually, 4.30 gear, Powerstroke get's 18 on the highway.
^^^True. I don't have half the stuff he has in his truck and I knock down 18.5-19 mpg at 70mph in my LLY CCSB. I need exhaust.
Old 02-14-2014, 01:31 PM
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Originally Posted by 87silverbullet
^^^True. I don't have half the stuff he has in his truck and I knock down 18.5-19 mpg at 70mph in my LLY CCSB. I need exhaust.
Don't over exhaust it either, I know a lot of guys put 5" on.. It kills the bottom end, IMHO... Nick has 4" on his truck and it's perfect I think..
I have 5" on my truck, but I have 4.30 gears.
Old 02-14-2014, 01:33 PM
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My buddy has all external mods and on 40's and see's as high as 30 on a Dmax and his 1 ton on 19.5's gets 26

Mine got 14 without a bed but he likes late 2004's


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