SBC Chevy Stocker Spark Plug ?........

[Wade_Owens]

I'm currently using a #137 Accel plug. I have tried to find a crossover list online, but, no luck. I would like to try some Autolites or any other name brand suggestions are welcome.

I really appreciate all who answer and helpout, all posts are appreciated!

Wade O!

see you all at Indy................................(if it don't rain....)

[SSDiv6]

Originally Posted by Wade_Owens

I'm currently using a #137 Accel plug. I have tried to find a crossover list online, but, no luck. I would like to try some Autolites or any other name brand suggestions are welcome.

I really appreciate all who answer and helpout, all posts are appreciated!

Wade O!

see you all at Indy................................(if it don't rain....)

A/C Delco: 44S, 45S, C44S

Autolite: 175, 427S, 75, 76 (Part number 437S may be used for Header applications since it is a shorty style.)

Champion: J11Y, J12, J12Y, J13, J13Y, J14, J14Y

Motorcraft: A42, A42C, A52, AT42

NGK: BP4, BP5S, R5670-5 (Race Plug)

Denso: W14P-U

Here is the link to the cross reference: http://www.accel-ignition.com/pdf/Pl..._Reference.pdf

[Kenny Wigington]

Autolite AR133, 134, 135 work well.

[Wade_Owens]

ok, I'm no plug expert, but, how can 5 or 6 plugs cross over to just 1 accel#?

wade o

[Dean Feiock]

Accel plugs are "universal" at best. They have one plug that might cover 3, 4, or more heat ranges. OEM type plugs offer a plug for nearly every heat range.

[Wade_Owens]

Thanks for all the help, and the link............

Wade O!

[mike natoli]

There are three steps to consider when choosing a race plug.
Step One: Shell Design
Determine the plug type that the cylinder head/piston will accept. Factors to consider are thread diameter and pitch, thread length, shell seat and hex size.
Step Two: Electrode Design and material
There are a number of factors to consider regarding electrode design and configuration. Should the plug use a fine-wire center or standard electrode? Should the plug have a full-coverage ?J-Gap?? Should the choice be a cut-back or an angled ground wire? Should the nose be projected or not? One rule of thumb is to attain as much projection into the cylinder as possible, although in some cases, piston clearance could prohibit the use of projected plugs.
Step Three: Heat Range
Correct heat range is critical to maintaining peak performance throughout the event. A plug that is too hot can result in preignition or detonation. A plug that is too cold could cause an engine to stumble, misfire or foul. Factors to consider when choosing the heat range of the plug include temperature, cylinder pressure, horsepower, fuel delivery (turbo, supercharged), fuel type and piston-to-head clearance.