55 mph to 75 mph + WOT = 130 knock counts - WTF?!
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Joined: Jul 2005
Posts: 290
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From: Detroit, MI
Car: 1991 Firebird
Engine: 350,Dart Heads,Weiand In,Roller Cam
Transmission: 2400-Stall, 700R4 w/ Kit
Axle/Gears: 4th Gen 3.42 disc (I wish)
55 mph to 75 mph + WOT = 130 knock counts - WTF?!
I did a WOT run tonight from 55 mph to 75 mph and got 130 knock counts. I am running a stock spark table. On a brand new O2 (today) it displayed well over .900 volts. I also did a WOT run tonight from a dead stop to about 90 mph and got maybe 1 knock count. Why would this happen? Tranny shifting down? My BLMs are next to perfect. I'm going to have a nightmare about this 
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Joined: Jan 2002
Posts: 9,962
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
The stock spark table is probably why its doing that. While the newer tbis have a nice tpi like, but less aggressive spark curve, the earlier systems (ours) have the crappy Swiss Alps looking timing table.
Thread Starter
Member
Joined: Jul 2005
Posts: 290
Likes: 0
From: Detroit, MI
Car: 1991 Firebird
Engine: 350,Dart Heads,Weiand In,Roller Cam
Transmission: 2400-Stall, 700R4 w/ Kit
Axle/Gears: 4th Gen 3.42 disc (I wish)
Doh...I guess I will pull some timing while I am doing the fueling.
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