SET TIMING BB (fine tune by ear) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

savatreatabvr · 10-09-2011, 11:36 AM

I've set the timing by ear on SB and BB Chevy's before and can get them running pretty good but can anyone tell me how to fine tune be ear?

J/D/S · 10-09-2011, 12:37 PM

Timing light man!!!!!! Thats the only way to go,
If you have to rent one from Autozone.

INSIDIOUS '86 · 10-11-2011, 03:21 PM

use a vacuum gauge and tune by max vacuum and the tune with your foot and butt torque meter

wyattglock · 10-11-2011, 04:19 PM

If you are trying to do it by ear, I have always advanced the timing until it starts running like crap. You will know because it will keep picking up on rpm then it will ping and act like its world is coming to an end, which if you leave it there will happen. Then back the timing off until it sounds healthy again. Shut it down, let it completely cool, and start it. If it fires off right away and doesn't hesitate off the line you are probably close. But a timing light will get you right on without all the hassle.

406 Q-ship · 10-11-2011, 06:05 PM

Save yourself alot of hassle......beg, borrow, steal, or buy a timing light.

10-09-2011, 11:36 AM	#1
savatreatabvr Registered User Join Date: Oct 2011 Location: phoenix, az Posts: 508	SET TIMING BB (fine tune by ear) I've set the timing by ear on SB and BB Chevy's before and can get them running pretty good but can anyone tell me how to fine tune be ear?

10-09-2011, 12:37 PM	#2
J/D/S Registered User Join Date: Jan 2008 Location: Fort Campbell KY Posts: 271	Re: SET TIMING BB (fine tune by ear) Timing light man!!!!!! Thats the only way to go, If you have to rent one from Autozone. __________________ John Bernard Books (The Shootist): "I won't be wronged, I won't be insulted, and I won't be laid a hand on. I don't do these things to other people and I expect the same from them."

10-11-2011, 03:21 PM	#3
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: SET TIMING BB (fine tune by ear) use a vacuum gauge and tune by max vacuum and the tune with your foot and butt torque meter __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

10-11-2011, 04:19 PM	#4
wyattglock Registered User Join Date: Jul 2010 Location: Lafayette, IN Posts: 622	Re: SET TIMING BB (fine tune by ear) If you are trying to do it by ear, I have always advanced the timing until it starts running like crap. You will know because it will keep picking up on rpm then it will ping and act like its world is coming to an end, which if you leave it there will happen. Then back the timing off until it sounds healthy again. Shut it down, let it completely cool, and start it. If it fires off right away and doesn't hesitate off the line you are probably close. But a timing light will get you right on without all the hassle.

10-11-2011, 06:05 PM	#5
406 Q-ship Registered User Join Date: Oct 2010 Location: Largo Florida Posts: 632	Re: SET TIMING BB (fine tune by ear) Save yourself alot of hassle......beg, borrow, steal, or buy a timing light. __________________ Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle."

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