I am swapping in the GM performance parts 350HO engine in a 1986 Monte Carlo SS that originally came with the 305HO. I believe I need a knock sensor for a 350, but since there was never a 350 offered in the Monte Carlo SS in the '80 which do I use? What will work correctly with the original computer? Are all knock sensors compatible? Part numbers?

 

any knock sensor should work from a GM V8.i've heard that the 91-92 5.7 K/S's aren't as senative as some of the older ones.one of these should work.i could be wrong but i think all of the connectors are the same.i would take the K/S with you when you go to get the new one

------------------
1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://discussion-board.com/GreaterC...dyAssociation/
http://www.cincyspeed.com/

 

You will also need a module for a 350, it is for the knock sensor. I lost all the info on this, so I don't know the part numbers anymore if I find it I will post it.

------------------
86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Taylor Spiro-pro wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.

 

Or you can run an LT4 KS (~$40), like me. Appearently there are three designs of KS: 305 (all indunctions), 350 (TBI, TPI and LT1) and LT4 (has a unique part number). I don't remember the part number though, but this is what came up (IIRC) in the GM computer when I was looking for a KS at the dealer.

------------------
George P. Lara
1984 Z28
SCCA, SCFB, SC3GFB

 

Why the LT4 knock sensor? Is that the only one that will work with the stock computer in the 1986 Monte Carlo SS?

 

When I was ordering some parts from SDPC I asked the guy I was talking to about a K/S for my 350 that will replace my 305tbi and he asked one of the service techs witch one I needed, well all the service tech said was that I needed the one to match the ecm I'll be using. I also ask a freind who worked at a GM dealership and he said the same thing. I wish I had some concreet evidence on which one is right. Doesn't matter or change K/S and matching module.

Steve

[This message has been edited by steve8586iroc (edited June 02, 2001).]

 

I have that same engine now. I just asked for a knock sensor for a truck that had vortec heads, 96 c/k pickup. It was that easy, they pulled the part off the shelf and gave it to me. It works .

------------------
, Jon (350 TBI!)
91 Red My website