I would like to get every bit of economy out of the ol 305. So far I get 20 around town so I know it's pretty good but I still would like more. I was thinking that losing rotating mass (lightweight balancer,Vigilante TC (10lbs lighter),and maybe some GTA rims) would help. I installed the March pulleys and aluminum d/s and that seemed to give me about 1mpg. Any suggestions are appreciated. Thanks!

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85 IROC,LB9,t-tops,hard loaded,black with red Lear-Siegler "Camaro" interior,MacEwen white guages,145 speedo,decal delete,91 Bose stereo,stage 2 Fastchip,AFPR,airfoil,K&Ns,March pulleys,alum. driveshaft&spare,92 police version 700r4.
On the list: BW 3.27 posi,89 PBR rear discs,140a police alt,coated TES,glass hood,aluminum front bumper brace

"Use overdrive for high speed pursuit"

 

for stop-n-go driving, the vehicle weight would make the most difference.

for highway driving the intake air temperature makes the most difference (hotter = higher mileage)

 

I saw a product in a magazine that straps onto the fuel line near the injectors. It alligns the mollecules, and creates up to 27% more fuel efficiency. Some power and torque are also added, while the fuel burns like it was a few octane higher. Its called the FuelMax. Anyone else heard of this or use it? I guess there is a money back guarontee if it didnt work, and it only costs $50.

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1991 Z28, TPI 350; 50,000 miles
Fastchip; Jet Airfoil; K&N filters; Homemade ram-air; Borla Catback, 50% open; SLP intake runners; SLP Headers; PowerAid TB spacer; March underdrice pulleys; Accel Coil' Hypertech rotor & cap; Accel extreme 9000; NGK platnum plugs; TB coolant bypass; ported plenum.

 

that product is a complete hoax. It does absolutely nothing to the fuel.

 

good, i wont waste my time then. i was pretty suspicious of it

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'91 Z28 50,000 miles:
K&N; Fastchip; Airfoil; Custom 'Ram-Air'; SLP Headers; Slp Runners; Borla Catback 50% open; Poweraid TB spacer; March underdrive pulleys; Accel Extreme 9000 wires, coil; Hypertech rotor, cap; NGK platinum plugs; manual fan switch; TB coolant bypass; Pirelli P7000 Z245/50/R16 all season tires; Energy suspention motor mounts.

 

A lighter weight shoe!!! Other than that, the best thing for gas mileage usually is just making sure that everything thing is tuned properly.