Does anybody know of a resistance scale that alters the knock sensors signal according to the cubes you have? Say I just got the 383 together, is there a specific resistor I can in in the line to make the sensor more accurate to the increase in cubes?

Thanks,
Brendan

 

ttt

 

I got a 406 and am interested as well. Is there any type of a filter that can be used like in the 4th gens?

 

Theres a less sensitive to noise like roller timing chain and such in the 96 vette it is available aftermarket. Supposedly theres diffrent ESC retard modules based on the orginal engine.

 

Knock sensor detection is related to bore size so a 383 will be kosher with a 350 knock sensor.

Matthew

 

So waht can the 406 guys do? or should I just forget aboput it and use the 350 one?

 

For accurate detonation detection you want the J+S knock detectors, and be ready to write a check for like $500.

The oem stuff is crude at best, and any one on the right series of sensors will work OK. You need to read the plugs to make sure anyway.

 

I'm an animal myself. If your ears were good enough knock sensor 'back in the day', why not now? Thus i haven't run a KS in well over a year (in this car, not couting my other computer comtrolled cars which were also alwas disabled) One day maybe it'd be neat to try to make the system work effectively, but i haven't even had time to do real VE tuning yet.

 

Some of the other animals use a little teflon tape on the sensor threads to help "mute" the louder sounds of the larger motor. Of course, this isn't the best way to do it, since a sensor is designed around the harmonics n blah blah blah of the motor, but it'll get you close if you don't want to shell out for that $500 one. Like these guys said, the ear and the eye can do a lot (probably better) than the crude OEM sensor can, but on the other hand, it the ear and the eye can't tell the computer not to retard the timing when it sees knock that isn't there.

 

Cause now adays folks are running alot closer of calibration then when they were with a centr/vac advance distributor.

Your ears have no clue as to when NON AUDIBLE detonation occurs. So you have to brush up on your plug reading, if your werious about having your tune right.

The K/S GM uses can often pick up some of the non sudible stuff, but it also prone to false triggering, the attention to detail is what makes a winning effort.

Just because your will to take the risk of running sans sensor, shouldn't be offered as evidence of anything other then your willingness to not use what's available to you. Kinda like ignoring a scanner, you don't need to use it, but it is a tool to make the job easier and better.

 

I'm running a '94 Caprice engine with Edelbrock heads and Speed Pro cam. The Caprice engine uses a roller timing chain whereas the original IROC engine did not (I think - please confirm). I am using my original knock sensor, however. Some have said that the roller timing chain could be falsely triggering the knock sensor.

Should I use a different sensor and perhaps ESC module? Is the Caprice stuff plug-n-play?

I swear I'm still getting false knock and tremendous spark retard that's killing my power output at WOT.

 

Very unlikely that the roller chain would set off a knock sensor. Also very impossible. that you have a 94 Caprice engine that's not an LT1 or it's 4.3L twin, the L99

If your IROC engine was a 5.7L w/ 4.00 bore, and so is the Caprice engine, your sensor and ESC module are perfect for it.

Matthew