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07-31-2013, 09:54 AM
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#1 |
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Member
Join Date: Mar 2007
Location: Grosse Ile Mi.
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Re: Best plug for LT-1
Ed, Thanks for the info. I'll pick some up today. Do you index them?
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07-31-2013, 10:16 AM
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#2 | |
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Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
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Re: Best plug for LT-1
Quote:
Used to index them in my old C/SM Camaro back in the '70s, straight plug heads and big domes. To prevent knocking them shut. LOL
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Ed Wright 4156 SS/JA |
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07-31-2013, 10:21 AM
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#3 |
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Member
Join Date: Mar 2007
Location: Grosse Ile Mi.
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Re: Best plug for LT-1
Thanks.
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07-31-2013, 12:20 PM
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#4 |
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Re: Best plug for LT-1
Bosche Platinum 4 Prong Plugs...
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07-31-2013, 01:01 PM
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#5 |
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Member
Join Date: Mar 2007
Location: Grosse Ile Mi.
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Re: Best plug for LT-1
Dan, Advantages??
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07-31-2013, 02:19 PM
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#6 | |
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Re: Best plug for LT-1
Quote:
My engine is an Iron Head LT-1 and many of our Impala and Vette Bloggers have had zero problems. Some go back to copper plugs and work fine until the tip wears out. Blower or Turbo guys use just about all of them with good success and have their preferred set ups. My experience is that Bosche Platinum last forever...though 4 prong more expensive. Use them on all my cars and look perfect every time they are checked. Our Impala guys retrofit the GM 8 Coil LCCC from the LSx Series to get rid of the Opti and add Accel or MSD Coils. I have just the one MDS Coil replacing the Stock one and carry extra Opti Harness. The 4 Prongs are spaced perfectly apart which attract a clean Spark. Prongs are vertical and should reduce flow restriction over a L shaped Prong. Never had to index them for better performance. OR Drill a Hole in the Tip like on a L-shaped Prong to prevent blow out.. Bosche makes a 2 Prong.. Figure 4 prong reduces a touch of combustion chamber volume. D Last edited by Dan Fahey; 07-31-2013 at 02:30 PM. |
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07-31-2013, 03:17 PM
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#7 |
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Veteran Member
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Location: Sand Springs, OK
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Re: Best plug for LT-1
Dan, you may be over your head here. Most everybody knows you do not use platinum plugs with a blower or turbo.
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Ed Wright 4156 SS/JA |
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07-31-2013, 03:17 PM
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#8 |
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Member
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Location: Magnolia, Texas
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Re: Best plug for LT-1
Dan,
What gap do you run, and what is the procedure for setting it? Bill |
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07-31-2013, 01:11 PM
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#9 | |
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Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
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Re: Best plug for LT-1
Quote:
I owned & operated an extremely busy & successful performance tuning shop for over forty years. Probably sold & installed more spark plugs than most here. Autolite & Champion have, in my experience, been more reliable that any others. I have had ACs with open resistors right out of the box. Look like a bad plug wire on the engine analyzer's 'scope. Zero issues with Champion, Motorcraft & Autolite. You may have a good set of those plugs, but I have seen enough bad ones I would never recommend them.
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Ed Wright 4156 SS/JA |
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