Finished up my engine swap to a 350 SBC not too long ago and shes been running great for the most part, but ive browsed a few of the forums and noticed theres a difference in ESC and Knock Sensors between the 305 SBC and 350 SBC, would that affect performance if im still running the original equipment?

https://www.thirdgen.org/forums/tbi/635800-350-knock-sensor.html

Following that forum, I was going to purchase the newer ESC and KS following those part numbers, but im unsure if theyre TBI/TPI specific and if it would work with my CCC Quadrajet-

Any help/advice would be most appreciated!

 

A 100k ohm knock sensor and matching esc work together. I’d assume if they are designed to work together the esc will send a signal to the ecm to retard timing .

 

The frequency, aka audio "pitch", of the engine knock, is a function of the bore. The sensor and the ESC are both tuned to the specific frequency of the bore they're made for.

AFAIK there's no performance type of difference that the wrong one will cause, besides not "hearing" any knock that might occur, and the timing not being pulled back in response to it.