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gator2511 · 05-02-2007, 10:31 PM

When I set my timing at 10 BTDC the truck runs ok but when I hook it to the full vacuum port on the carb and let it sit at 20 BTDC at idle it has much better throttle response and runs great. Right now I'm at 8 BTDC initial and full vacuum port and I have a total of 38 Degrees of advance at 3000 rpms. As you accelerate the vacuum goes down and the vacuum advance drops off as the mechanical starts cutting in. I'm not saying that is your problem but its easy to switch the vac can to the other port and see what it does.

05-02-2007, 10:31 PM	#23
gator2511 Registered User Join Date: Mar 2005 Location: tampa florida Posts: 776	Re: could cam be wiped but are lifters ok? When I set my timing at 10 BTDC the truck runs ok but when I hook it to the full vacuum port on the carb and let it sit at 20 BTDC at idle it has much better throttle response and runs great. Right now I'm at 8 BTDC initial and full vacuum port and I have a total of 38 Degrees of advance at 3000 rpms. As you accelerate the vacuum goes down and the vacuum advance drops off as the mechanical starts cutting in. I'm not saying that is your problem but its easy to switch the vac can to the other port and see what it does.