Trickflow Heads with HP Manifolds? Plugs?

[sc440]

Tf heads use a 3/4 reach plug

 

[sc440]

Firecore

 

[sc440]

Iron heads take a shorter plug,the part that goes in the head is shorter

 

[451Mopar]

I use the NGK plugs also. I would start at heat range 6 and then check the plugs to see if they should be hotter (5) or colder (7)
I opt for the slightly shorter ISO plug length 1.98" (BK) vs the JIS 2.086" (BC). Gives a bit more clearance on cylinder #4 to inner fender on my 440 block with 440 source stealth straight plug heads.
Resistor (R)
Heat range (6)
3/4" reach (E)
In NGK speak, BKR6E is the basic plug number without the firing end and plug gap info where I think the default is (E) V-Groove, 1.5mm projected tip. Then I think default gap is (9) 0.035"
Inventory #6962 for copper
#6418 for Iridium tip
#6364 for Nickle tip

https://www.ngk.com/ngk-spark-plug-numbering-systems

Enter part number in the search, there are several listed with different options.
https://www.ngk.com/spark-plugs-ngk

 

[sc440]

I use the NGK plugs also. I would start at heat range 6 and then check the plugs to see if they should be hotter (5) or colder (7)
I opt for the slightly shorter ISO plug length 1.98" (BK) vs the JIS 2.086" (BC). Gives a bit more clearance on cylinder #4 to inner fender on my 440 block with 440 source stealth straight plug heads.
Resistor (R)
Heat range (6)
3/4" reach (E)
In NGK speak, BKR6E is the basic plug number without the firing end and plug gap info where I think the default is (E) V-Groove, 1.5mm projected tip. Then I think default gap is (9) 0.035"
Inventory #6962 for copper
#6418 for Iridium tip
#6364 for Nickle tip

https://www.ngk.com/ngk-spark-plug-numbering-systems

Enter part number in the search, there are several listed with different options.
https://www.ngk.com/spark-plugs-ngk

Might try 6’s, what do you look for on plug that relates to heat range?

 

[MWbirdLOVER70]

Thanks for your help. I have a Chrysler electronic distributor set up according to Direct Connection specs. That’s how long ago I originally built the 440. It’s initial 14 degrees and 34 total. The motor ran great 30 years ago but I couldn’t keep it from detonating last five years or so. No more access to octane.

I have Hughes cam and roller setup. First time at that.

I now have an MSD distributor I will try after I break in the motor.

Thanks for the picture. That helps a lot.

Did you use 90 boots or straight for 5&7? I’m sure I will have to make my own set of wires.

Did you put any antiseeze on the plug threads?

I always antisense. Especially on plugs going in aluminum heads

 

[Bird 426]

2-3 burnt threads.

 

[sc440]

I always antisense. Especially on plugs going in aluminum heads

This is from ngk website

 

[Road Grabber]

Very helpful. Thank you

 

[Road Grabber]

This is from ngk website

View attachment 1719839

Wow. I’ll check out that site

 

[Road Grabber]

So what’s the difference in the plugs with -11 at the end? You can get either plug with the same number.

 

[Road Grabber]

Factory HP Exhaust Manifolds

Plugs 5 and 7 with the Edelbrock E Street 5090 75cc Angled Heads

Went with Ceramic Plug Boots from Pertronix on 5 and 7 , they work awesome

NGK Heat Range 6 - NGK 6962

10.4 to 1 Compression

Zero issues with installation or removal of spark plugs

Not familiar with the angle of the Trick Flows

Thanks for the response

 

[Bee1971]

So what’s the difference in the plugs with -11 at the end? You can get either plug with the same number.

.031 versus .043 gap with -11

 

[Road Grabber]

.031 versus .043 gap with -11

Would you get the larger gap with MSD?

 

[MWbirdLOVER70]

This is from ngk website

View attachment 1719839

Wow, never knew but I install my plugs without a torque wrench.

 

[Hemirunner]

Interesting thread. It seems you have several responses outlining the plug information and I would agree with starting with an NGK 5 heat range would get you in the ballpark. I do have a question regarding the logic behind using stock manifolds on on a performance head. I would be curious as to what drives this decision as there seems to be lots of people choosing this route?

 

[MWbirdLOVER70]

Interesting thread. It seems you have several responses outlining the plug information and I would agree with starting with an NGK 5 heat range would get you in the ballpark. I do have a question regarding the logic behind using stock manifolds on on a performance head. I would be curious as to what drives this decision as there seems to be lots of people choosing this route?

I would think being stealth and looking factory. Factory manifolds flow good

 

[Road Grabber]

I’m not going racing. If I don’t produce as much hp it’s not a big deal for me. The car before installing the heads tore up the pavement so I don’t have to be the fastest car. I want to keep cost down using my existing exhaust system and keep close to the original look when I open the hood.

Headers typically run hot under the hood and good headers that allow removal of the starter cost a lot of money. Not to mention they tend to be louder driving the car. I want the sound out the back not in the passenger compartment.

If I can use fuel available and prevent detonation using the Trickflow heads I will be happy.

Personal preference.

 

[Geoff 2]

NGK plugs with the -11 notation at the end of the part # is the gap in mm. 1.1mm = 0.044"

 

[Road Grabber]

If you plan to use MSD would you know if the larger gap plug is used?