Fuel consumption reality check. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fade94 · 07-29-2005, 08:23 AM

Since we have not hooked up the tank(s) to the fuel pump until we get them dropped and clean, we filled a bottle with gas to move my son's 83 to the shop. A whopping 110 feet. Used half the bottle. (20 oz bottle). Getting it back to the house used the whole thing. Needless to say, he is realizing dad may be right is suggesting a stock motor for his truck. The truck came with a new, unstarted motor. 350 bored .30. Ported and polished heads port matched to a Torquer intake with a Holley 750 a descent cam, rebuilt TH350 with a kit and 2500 stall. Granted, the short trip felt great, but the fuel use finally opened his eyes.

bwright · 07-29-2005, 08:38 AM

eh, it's all in the gearing....I'd spend $ on a 700R4 or a add-on overdrive unit before I'd pull that engine for a stock one (which won't do that much better on fuel anyhow)

fade94 · 07-29-2005, 08:41 AM

Truck originally had a 305 with 700R tranny. The guy we bought it from bought the body only and was building it to race. The plans are to build a nice 350 and put a 700R back in it. We are to the poing now that we desperately need a replacement in-cab wiring harness complete with the power door wiring. When we pulled the inst. panel to investigate why the gauges did not work, we found a nitemare or melted wires due to what appears to be, a very bad stereo install.

MylilBowTie · 07-29-2005, 08:49 AM

Thats like 3.75 mpg...

magnethead · 07-29-2005, 02:52 PM

pup the axle cover...

if it was set for racing, i would bet theres a 4.10, 4.56, or 4.88 set in the axle..

fade94 · 07-29-2005, 02:53 PM

It's a 10 bolt, hopefully he didn't put gears like that in it. I do have a 12 bolt sitting in the shop. Not sure if I'm going to be keeping it or not.

07-29-2005, 08:23 AM	#1
fade94 Registered User Join Date: Mar 2005 Location: Melissa, TX Posts: 799	Fuel consumption reality check. Since we have not hooked up the tank(s) to the fuel pump until we get them dropped and clean, we filled a bottle with gas to move my son's 83 to the shop. A whopping 110 feet. Used half the bottle. (20 oz bottle). Getting it back to the house used the whole thing. Needless to say, he is realizing dad may be right is suggesting a stock motor for his truck. The truck came with a new, unstarted motor. 350 bored .30. Ported and polished heads port matched to a Torquer intake with a Holley 750 a descent cam, rebuilt TH350 with a kit and 2500 stall. Granted, the short trip felt great, but the fuel use finally opened his eyes. __________________ 68 short bed driver (71 clip on it now, swapping to 68 when weather cooperates) 67 short step project (will get SWB from the 68) 67 Camaro, #'s matching (my wife's) 03 Dodge Ram 2500 4x4 diesel 5 speed 4.10 rear

07-29-2005, 08:41 AM	#3
fade94 Registered User Join Date: Mar 2005 Location: Melissa, TX Posts: 799	Truck originally had a 305 with 700R tranny. The guy we bought it from bought the body only and was building it to race. The plans are to build a nice 350 and put a 700R back in it. We are to the poing now that we desperately need a replacement in-cab wiring harness complete with the power door wiring. When we pulled the inst. panel to investigate why the gauges did not work, we found a nitemare or melted wires due to what appears to be, a very bad stereo install. __________________ 68 short bed driver (71 clip on it now, swapping to 68 when weather cooperates) 67 short step project (will get SWB from the 68) 67 Camaro, #'s matching (my wife's) 03 Dodge Ram 2500 4x4 diesel 5 speed 4.10 rear

07-29-2005, 08:49 AM	#4
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Thats like 3.75 mpg... __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

07-29-2005, 02:53 PM	#6
fade94 Registered User Join Date: Mar 2005 Location: Melissa, TX Posts: 799	It's a 10 bolt, hopefully he didn't put gears like that in it. I do have a 12 bolt sitting in the shop. Not sure if I'm going to be keeping it or not. __________________ 68 short bed driver (71 clip on it now, swapping to 68 when weather cooperates) 67 short step project (will get SWB from the 68) 67 Camaro, #'s matching (my wife's) 03 Dodge Ram 2500 4x4 diesel 5 speed 4.10 rear

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07-29-2005, 08:38 AM	#2
bwright Registered User Join Date: May 2004 Location: Dickson, TN Posts: 141	eh, it's all in the gearing....I'd spend $ on a 700R4 or a add-on overdrive unit before I'd pull that engine for a stock one (which won't do that much better on fuel anyhow)

07-29-2005, 02:52 PM	#5
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	pup the axle cover... if it was set for racing, i would bet theres a 4.10, 4.56, or 4.88 set in the axle..



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