305 vs 350 knock sensor part numbers??
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
305 vs 350 knock sensor part numbers??
I've gone through the archives and seen that everybody and their brother (me included) always says to change the knock sensor on a 305 to 350 swap. But, somebody on my board, along with Kevin91z seems to think that until 1990, the 305 and 350 TPI cars used the same knock sensor. Does anybody have information on this?
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The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
Custom Thirdgen Subwoofer Enclosures
"I didn't know a bored out Ford could go so slow" -Shenandoah
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
I know they are tuned to a different frequency because the bore size is different. The diff size bore makes a different sound.
You can have my knock sensor if you want.
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1986 Iroc 305 small block chevy getting modded now for speed
You can have my knock sensor if you want.
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1986 Iroc 305 small block chevy getting modded now for speed
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Thanks, but I don't need your knock sensor. I've been well aware that 350s and 305s use a different sensor, but it's come to my attention recently that for the TPI cars, they actually carry the same part number. I'm just trying to find out whether there is truth to this.
------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
Custom Thirdgen Subwoofer Enclosures
"I didn't know a bored out Ford could go so slow" -Shenandoah
------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
Custom Thirdgen Subwoofer Enclosures
"I didn't know a bored out Ford could go so slow" -Shenandoah
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From: Cherry Hill, NJ
Car: 92 Trans Am 'Vert
Engine: 305 TPI
Transmission: 5 Speed
Jim, they dont carry the same P/N. The autopart stores are WRONG. A while back, I purchased a KS for my 92 Vert. Well, turns out that they gave me the wrong sensor. In 90, GM switched to a 3.9k Ohm KS as opposed to the old style 100 Ohm one. Well, none of the parts stores knew about this, and all had the same one listed. I finally found a local non-commercial parts store who had the correct one... I just brought my Volt meter to make sure it was the 3.9 instead of the 100.
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Re: 305 vs 350 knock sensor part numbers??
Hi, well a lil to late for you all, but i do have the answer to this question for further help, im doing mine right now and i can say the part number for the 305 is 213-325 and for the 350, its 213-324 
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