The instructions on how to install spark plugs from ACDelco can be found on the website of the company. Precise information and instructions can be sought under the section spark plugs of the website.
0.035 inches for CR43TS or R43TS AC Delco spark plugs
check with your parts house to get the gap for your particular application.
The ACDelco CR43TS spark plug typically has a gap specification of 0.040 inches (1.0 mm). However, it's important to verify the specific requirements for your vehicle, as gap settings can vary based on the engine type and manufacturer recommendations. Always consult the owner's manual or a reliable source for the correct gap setting for your application.
.045 " is the correct gap.
I have a 1996 Chevy astro w/ 4.3 L vortec... these plugs fit that motor.
ACDelco R45S conventional spark plugs for an original ignition system.
If your're using ACDelco Platinum Spark Plugs the gap is .040".
Platinums are gapped at 0.60, and iridiums are typically gapped at 0.40... you shouldn't try to change the preset gaps.
I would use original equipment ACDelco Iridium spark plugs part number 41-103 for best results.
The original factory plugs were ACDelco plugs (I believe Iridium) and were top notch! I would highly recommend another set of ACDelco iridiums simply because they perform well, consistently, and are well proven. P# 41101
Depends on the spark plug you use. The ACDelco part number R43TS6 uses a .060" gap.