Adjustable Vacuum Advance - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mikajo39 · 08-04-2009, 12:52 PM

SO I finally got my timing issues resolved but now I am curious as to how much Vac Adv my vac can should pull at part throttle
i have initial set to 15 deg and its all out at 32 deg at 3200rpm. under part throttle with Vacuum advance hooked up I pull up too 52 deg advance is this too much? I have an adjustable vacuum can I can put on and tune to my hearts content what should I shoot for in vacuum advance for maximum performance. I have a 350 SBC bored over .30 (355) Lt4 hotcam ported vortecs and 9.5:1 compression ratio

08-04-2009, 12:52 PM	#1
mikajo39 Gearhead and audio junkie Join Date: Aug 2008 Location: nunyah Posts: 452	Adjustable Vacuum Advance SO I finally got my timing issues resolved but now I am curious as to how much Vac Adv my vac can should pull at part throttle i have initial set to 15 deg and its all out at 32 deg at 3200rpm. under part throttle with Vacuum advance hooked up I pull up too 52 deg advance is this too much? I have an adjustable vacuum can I can put on and tune to my hearts content what should I shoot for in vacuum advance for maximum performance. I have a 350 SBC bored over .30 (355) Lt4 hotcam ported vortecs and 9.5:1 compression ratio

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