10 MPG to 13.5MPG from timing alone - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**70C10Toejam** · 07-16-2007, 10:53 PM

re-timed my truck recently.
short back story...when I got it, it ran great with good power. It didn't ping, but it would kick against the starter when starting it hot. found the timing was set to 18 BTDC. set timing to 4, according to mfg. Power dropped off, would bog out when stepping hard on gas from standstill. Mileage dropped too.

as stated, reset the timing to 12 BTDC, since posters said they liked 8-12. The milage jumped from 10 to 13.5 to 14 MPG. Doesn't fight the starter, and just spins the tires from a standsitll, truck doesn't even move unless I let off.

This is a Goodwrench 350 with 8.5:1, factory intake etc

07-16-2007, 10:53 PM	#1
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	10 MPG to 13.5MPG from timing alone re-timed my truck recently. short back story...when I got it, it ran great with good power. It didn't ping, but it would kick against the starter when starting it hot. found the timing was set to 18 BTDC. set timing to 4, according to mfg. Power dropped off, would bog out when stepping hard on gas from standstill. Mileage dropped too. as stated, reset the timing to 12 BTDC, since posters said they liked 8-12. The milage jumped from 10 to 13.5 to 14 MPG. Doesn't fight the starter, and just spins the tires from a standsitll, truck doesn't even move unless I let off. This is a Goodwrench 350 with 8.5:1, factory intake etc __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys



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