what's you best MPG?? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MAC67 · 02-12-2004, 07:02 PM

umm let me think , one of em is a 79 chevy 3/4 4x4 , 468 , th400,205 , 35's and 4:11's ,, about 6-7 mpg anywhere i go, ouch,, my blaze is 355 , th400 ,205, 3:73's 39.5 mickeys and it gets around 11

Bowtie67 · 02-12-2004, 08:58 PM

71402BB, I think you may have the worst next to the Acki Guy but what are you doing in this thing that makes it that bad a gas milage, I used to have a 71SS with a 402, 373 gears and averaged 17MPG, You got a hole in the tank, Fule punp leaking, maybe a Dominator 1500CFM Carb. Instead of lower your gears did you ever think of switching the 4speed for a Auto w/OD. I went from 13MPG to 18 with my OD in my 67and w/cam swap jumped up to 21mpg, If you run 2.73 w/4spd this thing is gonna be a MF to take off with.

super72 · 02-13-2004, 12:30 AM

I had a 79 chev 38.5x15.50's and 3.07's. It got 12mpg with a mildly built 350. So far my 72 with 31's and a 283 gets about 14mpg. It has lower gears.

71-longbed · 02-13-2004, 04:54 AM

Best i've gotten on the highway is 16

around town i dont even bother checking it ....

coargonaut · 02-13-2004, 10:02 AM

95 K1500, almost stock 350 (modified with bad intake valvle on #1, that gives about zero compression), L60 trans, 3.73 gears.
Gets between 12 and 14 around town, and as high as 18+ on the highway.
Mebbe better after rebuild.

Ed

02-13-2004, 04:54 AM	#29
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	Best i've gotten on the highway is 16 around town i dont even bother checking it .... __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

02-13-2004, 10:02 AM	#30
coargonaut Registered User Join Date: Sep 2003 Location: Denver, CO Posts: 51	95 K1500, almost stock 350 (modified with bad intake valvle on #1, that gives about zero compression), L60 trans, 3.73 gears. Gets between 12 and 14 around town, and as high as 18+ on the highway. Mebbe better after rebuild. Ed __________________ 1995 Z71 Rebuilt 350- J&E pistons, CompCam, Vortec Heads, massaged computer. Rebuilt 4L60 1997 Suburban stock, stock, stock

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02-12-2004, 07:02 PM	#26
MAC67 " SHOW ME" Join Date: Jan 2003 Location: shelbyville illinois Posts: 2,624	umm let me think , one of em is a 79 chevy 3/4 4x4 , 468 , th400,205 , 35's and 4:11's ,, about 6-7 mpg anywhere i go, ouch,, my blaze is 355 , th400 ,205, 3:73's 39.5 mickeys and it gets around 11

02-12-2004, 08:58 PM	#27
Bowtie67 Registered User Join Date: Jan 2004 Location: NH Posts: 2,266	71402BB, I think you may have the worst next to the Acki Guy but what are you doing in this thing that makes it that bad a gas milage, I used to have a 71SS with a 402, 373 gears and averaged 17MPG, You got a hole in the tank, Fule punp leaking, maybe a Dominator 1500CFM Carb. Instead of lower your gears did you ever think of switching the 4speed for a Auto w/OD. I went from 13MPG to 18 with my OD in my 67and w/cam swap jumped up to 21mpg, If you run 2.73 w/4spd this thing is gonna be a MF to take off with.

02-13-2004, 12:30 AM	#28
super72 Registered User Join Date: Jan 2004 Location: South Carolina Posts: 207	I had a 79 chev 38.5x15.50's and 3.07's. It got 12mpg with a mildly built 350. So far my 72 with 31's and a 283 gets about 14mpg. It has lower gears.



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