spark plugs in eddy heads

[farmer260]

I have Bosch +4 spark plugs for a stock LA318 will these work with my 360 edelbrock heads? the pistons i am useing will be makeing 10.5:1 compresion with these heads.

 

[redfastback]

only if they are 5/8 hex not 13/16. eddys use the smaller style.

 

[farmer260]

I see! well looks like i need new plugs! any idea what the part number be for the plugs that would fit?

 

[rumblefish360]

If you go to the Auot Parts store and ask for OE plugs, then ask for a cross ref. to the smaller socket size, you'll be good.

(You can see I can't remember tha plug size, but thats what I do.

Cooler heat ranges shouldnt be used any cooler than 2 steps at max! You'll be hard pressed to find gains after that unless your at a track.

 

[mikedevore]

I'm using Champions RC12YC5 gapped at .050. I use a MSD6AL ignition. If you are needing a .035 gap, use the RC12YC plug.

 

[farmer260]

so how do i know what gap plug to use?

 

[Thrashard340]

Waht kind of ignition are you running?

 

[farmer260]

i have a MSD high output coil, big plug wires and stock distributar

 

[ramcharger]

Stock ignition box? Points?

 

[farmer260]

ya i guess so

 

[ramcharger]

Stick with a .035 gap unless you go to an aftermarket ignition box.