Spark Plugs - Page 2

Trophyman · #1 04-20-2010, 11:01 PM

Thank you.
Stock iron heads

Randy

rak1 · #2 04-22-2010, 10:39 AM

Keep us posted...

Hank70SS · #3 04-14-2010, 10:58 AM

Some do jump up to .060 gap with HEI but more common is .045. The larger the gap the more resistance in the circuit. The more resistance the more chance that high voltage is going to find another path to ground. Like maybe punching a hole through the plug wire insulation and crossing to another plug wire or to the block. Maybe even causing carbon tracking in the cap. .060 will work but everything else better be up to the task. That's why newer cars have individual coils right near the plug, less components to brake down while pushing that high voltage around.

What plugs are you running now? There is nothing wrong with AC or even Autolite, I know Ford. I guess I'm not a big fan of $10 a piece plugs. These cars been running pretty strong for over 40 years with standard resistor plugs.

Trophyman · #4 04-14-2010, 12:52 PM

Quote:

Originally Posted by stalkingbear

What heads are you running? Gap at .035 is too close - HEI systems have a bunch of juice in them to make .060 work with a hot HEI coil. The plus depend on what head - peanut plugs, full size plugs, taper seal or gasket seals.

(You are stretching my brain at 7 A.M. - it hurts.... I may have some of this info wrong but I don't think so...)

Great. Heads are stock. I hate to ask the kid at Kragen's for the right plug. What number AC should I go for?
Thanks guys,
Randy

Hank70SS · #5 04-15-2010, 05:49 PM

Quote:

Originally Posted by stalkingbear

I use some Summit 8mm wires that seem to do well on a hopped up HEI, small block 400 hp motor.

I think the Accel's are 8mm. Summit, Accel, etc., it's not rocket science. They're wires with insulation and the boots at each end. The advantage to custom is they're exactly the length you want. I have so many other things to deal with that custom fit is far from the top. Not that it won't work it's way up there eventually.

rak1 · #6 04-16-2010, 10:19 AM

We don't know if he has a spark plug wire cutter crimper, nor if he's worked on an engine before so getting a universal set is easier than trying to cut and fit a non finished set. His setup sounds stock to me with just headders. Going to 8MM on a stock system could drop the voltage to the plugs and why spend the extra money on something he might not need. More info is needed before making anymore decisions. And you are correct this is not rocket science or brain surgery but you need to know the basics configuration of this setup and some of his goals before spending money he doesn't need to spend.

Quote:

Originally Posted by Hank70SS

I think the Accel's are 8mm. Summit, Accel, etc., it's not rocket science. They're wires with insulation and the boots at each end. The advantage to custom is they're exactly the length you want. I have so many other things to deal with that custom fit is far from the top. Not that it won't work it's way up there eventually.