Advice on tune up options
Thread Starter
Instructor
Joined: Dec 2017
Posts: 108
Likes: 4
From: Mocksville North Carolina
Advice on tune up options
I'm about to buy every thing to tune up my 77 and could use some advice on what brands of wires, plugs, cap ect to go with. My car still has the factory heat shields installed but I'm not sure if I should use those because I'm going to be replacing the factory exhaust manifolds and installing headers and side pipes in the near future. Don't you need a different set of wires and shorter plugs if you're installing headers? Will the factory plugs and wires still work with headers if I run them through all the factory shields? Sorry for the stupid questions but I just don't want to end up buying wires and plugs twice if I can help it. Thinking about going with all Acdelco but is there a better brand I should consider?
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
I use hooker headers with side pipes and NGK plugs with no clearance issues. Straight plug heads not angle plug heads.
you can still use the original routing for the plug wires. Get spiral wound wires for good quality wires.
you can still use the original routing for the plug wires. Get spiral wound wires for good quality wires.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
I recommend going over the top of the valve covers with the wires and cutting your own........use Taylor pt# 73051....cut to length and crimp one end on.....use Taylor pt#43390 to strip and crimp......I can do a set in 45 minutes. I just think the stock routing is silly and unneeded now as spiral wound resistor wire does not interfere with radio signals.....
I actually like MSD's HEI cap and rotor......super high quality and looks cool. Fits the stock HEI unit. For plugs I use NGK....either UR4 or FR4 for iron or aluminum heads.....the R5671 plugs are even better if you can find them as they come in 4 heat ranges (7 to 10)....I usually go with an "8" on a well tuned engine.
Jebby
I actually like MSD's HEI cap and rotor......super high quality and looks cool. Fits the stock HEI unit. For plugs I use NGK....either UR4 or FR4 for iron or aluminum heads.....the R5671 plugs are even better if you can find them as they come in 4 heat ranges (7 to 10)....I usually go with an "8" on a well tuned engine.
Jebby
Thread Starter
Instructor
Joined: Dec 2017
Posts: 108
Likes: 4
From: Mocksville North Carolina
I don't have my car here at home to look at it again but I don't think I can use the straight ends with the factory exhaust manifolds I think they will touch the manifold. It's gonna be at least a couple months before I can buy a set of Doug's porcelain coated headers and I need the wires now.
Thread Starter
Instructor
Joined: Dec 2017
Posts: 108
Likes: 4
From: Mocksville North Carolina
I recommend going over the top of the valve covers with the wires and cutting your own........use Taylor pt# 73051....cut to length and crimp one end on.....use Taylor pt#43390 to strip and crimp......I can do a set in 45 minutes. I just think the stock routing is silly and unneeded now as spiral wound resistor wire does not interfere with radio signals.....
I actually like MSD's HEI cap and rotor......super high quality and looks cool. Fits the stock HEI unit. For plugs I use NGK....either UR4 or FR4 for iron or aluminum heads.....the R5671 plugs are even better if you can find them as they come in 4 heat ranges (7 to 10)....I usually go with an "8" on a well tuned engine.
Jebby
I actually like MSD's HEI cap and rotor......super high quality and looks cool. Fits the stock HEI unit. For plugs I use NGK....either UR4 or FR4 for iron or aluminum heads.....the R5671 plugs are even better if you can find them as they come in 4 heat ranges (7 to 10)....I usually go with an "8" on a well tuned engine.
Jebby
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
Here is some good reading on the subject if you want.
https://www.aa1car.com/library/spark_plug_wires.htm
https://www.aa1car.com/library/spark_plug_wires.htm
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
I did not know anything about the spiral wound resistor wire and radio signals thanks for that tip! I was just looking at the MSD stuff too and was kinda really wanting to run the wires over top just wasn't sure if it would be an issue with the stock exhaust manifolds or not.
Jebby
Team Owner
Joined: Jun 2000
Posts: 38,923
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From: Southbound
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