Spark plugs

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Huckleberry

Huckleberry

Member
Joined
Jul 27, 2023
Posts
34
Reaction score
28
Location
Valley Bend WV
First Name
Donnie
Truck Year
1978
Truck Model
K15
Engine Size
350ci
Hey everyone, what's the best spark plug for a 350 crate motor. " bone stock" daily driver, please advise on plug gap. Thanks in advance
 
DoubleDingo

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
11,249
Reaction score
17,163
Location
Right where I am
First Name
Bagoomba
Truck Year
1981
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s
Engine Size
Carb'ed Vortec 350
ACDELCO. Gap is .045 with HEI if I recall correctly, and .035 with points. Go to the local auto parts store, rock auto, or whatever, plug in your truck's info and get the ACDELCO plug for that application. Not the fancy iridium or platinum, just the plain-jane copper plugs.
 
Bextreme04

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,580
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
It will be an ACDelco R45TS. That was the specified plug for almost every small block(and some big block) GM engine for decades. My 71 Buick 455 uses the same plugs.
 
You must log in or register to reply here.

Similar threads

labbetheking
383 stroker which spark plugs?
Replies
9
Views
659
Grit dog
Grit dog
K
Spark Plug Wire Holders
Replies
2
Views
193
fast 99
fast 99
C
Spark plug gap closed fresh rebuild
2 3
Replies
39
Views
3K
BillK
B
M
Spark plug foul up
2
Replies
22
Views
1K
martingmc86
M
RaysnCayne
Fuel spitting out spark plug hole?!?
Replies
8
Views
448
RaysnCayne
RaysnCayne

Latest posts

Forum statistics

Threads
44,150
Posts
950,424
Members
36,266
Latest member
jonbgood
Top