Anti-knock system for older engines. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**WorkinLonghorn** · 12-19-2007, 06:17 PM

I posted this over in the electrical forum but thought maybe some of you guys here would know about this;
Any of you guys ever try to modernize and optimize your spark with one of these retro-fit knock-sensors?

They're sorta pricey,but I'd be really interested in hearing about anybody's experience,you know, in case I find myself with $6-700 burning a hole in my pocket.
Maybe easier/cheaper to pull parts off an early FI SB and make your own?
Kind of blurry Pic i guess.What it says is there's a system to install an Oxygen sensor and some other goodies so you can have timing advanced just before knock at all times.

12-19-2007, 06:17 PM	#1
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,873	Anti-knock system for older engines. I posted this over in the electrical forum but thought maybe some of you guys here would know about this; Any of you guys ever try to modernize and optimize your spark with one of these retro-fit knock-sensors? They're sorta pricey,but I'd be really interested in hearing about anybody's experience,you know, in case I find myself with $6-700 burning a hole in my pocket. Maybe easier/cheaper to pull parts off an early FI SB and make your own? Kind of blurry Pic i guess.What it says is there's a system to install an Oxygen sensor and some other goodies so you can have timing advanced just before knock at all times. __________________ '69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.



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