Author Topic: Spark plug wires: 50 ohms vs. 350 ohms  (Read 1953 times)

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338Raptor

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Spark plug wires: 50 ohms vs. 350 ohms
« on: March 29, 2020, 10:02:38 PM »
Are there any disadvantages of using a 50 ohm/ft spark plug wire instead of a 350 ohm/ft wire?  Is there a different ignition box required? Do spark plugs erode faster?

My application is Street/Strip, 11.5 compression on pump gas,  Cammer with Hilborn IR EFI so the injector wires will be relatively close to the spark plug wires. 
ERA 427SC Cobra: Iron ‘67 482 SOHC, TKX 5 speed, TrueTrac 3.31 IRS, Magnesium Halibrands, Avon CR6ZZ tires. 

1969 Shelby GT350, 4 speed.

1967 Mustang Fastback: Close ratio T56 Magnum, Fab-9, Wilwood superlite brakes, Torque arm rear suspension, TCI-IFS with shock tower delete, (Coming soon, FE motor TBD)

1970 F250 4x4 Mud Truck, 557 BBF, as cast P51 heads, 900 hp @6700rpm, 801 tq, Q16, C6.

2012 Cobra Jet Mustang factory drag car, 5.4 liter 4.0 Whipple, 970 RWHP.

1964 Galaxie 500XL, 35 spline 3.70 Strange S-Trac, 6R80, (Coming soon: Pond Aluminum 525 SOHC, 800hp)

Falcon67

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Re: Spark plug wires: 50 ohms vs. 350 ohms
« Reply #1 on: March 30, 2020, 11:35:30 AM »

wowens

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Re: Spark plug wires: 50 ohms vs. 350 ohms
« Reply #2 on: March 31, 2020, 12:32:38 PM »
Woody

338Raptor

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Re: Spark plug wires: 50 ohms vs. 350 ohms
« Reply #3 on: March 31, 2020, 06:37:07 PM »
Very good info.  I’ll go with them for my next set of wires.
ERA 427SC Cobra: Iron ‘67 482 SOHC, TKX 5 speed, TrueTrac 3.31 IRS, Magnesium Halibrands, Avon CR6ZZ tires. 

1969 Shelby GT350, 4 speed.

1967 Mustang Fastback: Close ratio T56 Magnum, Fab-9, Wilwood superlite brakes, Torque arm rear suspension, TCI-IFS with shock tower delete, (Coming soon, FE motor TBD)

1970 F250 4x4 Mud Truck, 557 BBF, as cast P51 heads, 900 hp @6700rpm, 801 tq, Q16, C6.

2012 Cobra Jet Mustang factory drag car, 5.4 liter 4.0 Whipple, 970 RWHP.

1964 Galaxie 500XL, 35 spline 3.70 Strange S-Trac, 6R80, (Coming soon: Pond Aluminum 525 SOHC, 800hp)

BigBlueIron

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Re: Spark plug wires: 50 ohms vs. 350 ohms
« Reply #4 on: April 06, 2020, 11:48:51 AM »
Looks like a nice wire from an American company that isn't to shrouded in BS. But $223.50 for their KV85 wires for an FE is outrageous. I don't mind a little more for made in USA but holy smokes. Surely that is an inflated number for sales purposes.