The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Tackling a botched build, need SBC advice.

**kwmech** · 08-03-2017, 01:27 AM

If the timing were truly that far off, it would not start. You more than likely have a bad harmonic balancer that the outer ring has spun or a balancer that has the timing marks carved in at 12 o'clock requiring a different timing cover to get a correct reading. First make sure it is wired correctly and you have a solid 12v to the HEI cap while running, and not the original resistor wire. Double check the wiring on the FITech unit to make sure it has all the correct power and grounds. Also check the fuel pressure to the unit. Dirty fuel filter?

08-03-2017, 01:27 AM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,388	Re: Tackling a botched build, need SBC advice. If the timing were truly that far off, it would not start. You more than likely have a bad harmonic balancer that the outer ring has spun or a balancer that has the timing marks carved in at 12 o'clock requiring a different timing cover to get a correct reading. First make sure it is wired correctly and you have a solid 12v to the HEI cap while running, and not the original resistor wire. Double check the wiring on the FITech unit to make sure it has all the correct power and grounds. Also check the fuel pressure to the unit. Dirty fuel filter?