Angle plug vs. Straight Plugs 2016
09-12-2016, 12:20 PM
#1
Melting Slicks
Thread Starter
Angle plug vs. Straight Plugs 2016
Soo...
I feel like the answer to this question used to be more straight forward and now the waters are muddied...
What are the advantages of modern angle plug vs. straight plug heads?
The answer USED to be that angle plugs moved the spark plug closer to the exhaust port, and at high RPM this apparently provides a minimal power (mostly torque is my understanding) benefit.
Now most of the discussions I see are about header fitment. Which is it?
Any chance anyone knows the answer for Profiler heads? (moved towards exhaust for more perf or just moved for header fitment?)
Adam
I feel like the answer to this question used to be more straight forward and now the waters are muddied...
What are the advantages of modern angle plug vs. straight plug heads?
The answer USED to be that angle plugs moved the spark plug closer to the exhaust port, and at high RPM this apparently provides a minimal power (mostly torque is my understanding) benefit.
Now most of the discussions I see are about header fitment. Which is it?
Any chance anyone knows the answer for Profiler heads? (moved towards exhaust for more perf or just moved for header fitment?)
Adam
09-12-2016, 01:49 PM
#2
Team Owner
Member Since: Oct 2004
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St. Jude Donor '05
not a direct answer but pick what fits your headers, if there was a difference youd never even notice it.
Most of todays heads are pretty decent either way.
Most of todays heads are pretty decent either way.
09-13-2016, 02:31 PM
#3
the original cast iron angle plug heads were made to be used with a high dome high compression piston to get the flame travel above the piston dome so you did not need as much timing lead.
09-13-2016, 03:21 PM
#4
Melting Slicks
Thread Starter
Thanks for that, folks; now on to practical application:
I bought the ceramic coated flowtech long headers #31106FLT; how can I tell which style plugs to go with for the ATK profiler heads and these headers?
If I called flowtech, won't they just say "depends upon the head" and if I call ATK about my profiler heads they'll just say "depends upon the headers"?
If the purpose here of the multiple styles to to make a choice that fits well with your headers; how do you actually tell which style will fit with your headers BEFORE you buy them and realize there's a problem?
Adam
I bought the ceramic coated flowtech long headers #31106FLT; how can I tell which style plugs to go with for the ATK profiler heads and these headers?
If I called flowtech, won't they just say "depends upon the head" and if I call ATK about my profiler heads they'll just say "depends upon the headers"?
If the purpose here of the multiple styles to to make a choice that fits well with your headers; how do you actually tell which style will fit with your headers BEFORE you buy them and realize there's a problem?
Adam
09-13-2016, 03:37 PM
#5
Dr. Detroit
Member Since: Mar 2012
Location: New Braunfels Texas
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No....go to the Flowtech catalog and look up your part number....then read the footnotes. It will say what to use there.
Almost nobody uses angle plug stuff anymore...unless they have to or believe in aliens. The aftermarket has noticed....I was never aware of a header that was specifically made for angle plug heads.
Get straight plug heads and straight plug headers and call it.....
Jebby
Almost nobody uses angle plug stuff anymore...unless they have to or believe in aliens. The aftermarket has noticed....I was never aware of a header that was specifically made for angle plug heads.
Get straight plug heads and straight plug headers and call it.....
Jebby
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NewbVetteGuy (09-13-2016)
09-13-2016, 03:40 PM
#6
Melting Slicks
Thread Starter
No....go to the Flowtech catalog and look up your part number....then read the footnotes. It will say what to use there.
Almost nobody uses angle plug stuff anymore...unless they have to or believe in aliens. The aftermarket has noticed....I was never aware of a header that was specifically made for angle plug heads.
Get straight plug heads and straight plug headers and call it.....
Jebby
Almost nobody uses angle plug stuff anymore...unless they have to or believe in aliens. The aftermarket has noticed....I was never aware of a header that was specifically made for angle plug heads.
Get straight plug heads and straight plug headers and call it.....
Jebby
Adam