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what spark plug? #585089 01/17/10 08:00 AM 01/17/10 08:00 AM
Joined: Aug 2007 Posts: 74 virginia T tigger1 OP member
tigger1 OP member T Joined: Aug 2007 Posts: 74 virginia	Wondering which number to use. I prefer to use NGK's as I have had great service through the years. I am planning on switching from 63 max wedge heads to Victors or Procomps. 496,12-1, 600@260,strip only. Wondering what heat range to start with? Twin turbo 440 72 barracuda

Re: what spark plug? [Re: tigger1] #585090 01/17/10 08:46 AM 01/17/10 08:46 AM
A Anonymous Unregistered
Anonymous Unregistered A	dome or flat top pistons? 5671A-8 for dome non projected tip for dome. 5672A-8 for flat top projected tip NGK spark plug.

Re: what spark plug? #585091 01/17/10 08:51 AM 01/17/10 08:51 AM
Joined: Aug 2007 Posts: 74 virginia T tigger1 OP member
tigger1 OP member T Joined: Aug 2007 Posts: 74 virginia	Ross flat top. Thanks for the information. I did not want to guess and carbon every thing up or worse trying to learn every thing the hard way. Twin turbo 440 72 barracuda

Re: what spark plug? [Re: tigger1] #585092 01/17/10 09:10 AM 01/17/10 09:10 AM
A Anonymous Unregistered
Anonymous Unregistered A	no problem, just remember these are for alumuinum heads.

Re: what spark plug? #585093 01/17/10 10:36 AM 01/17/10 10:36 AM
Joined: Jan 2003 Posts: 16,932 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,932 NC	Quote: 5672A-8 for flat top projected tip NGK spark plug. That is a good starting point. R5672A-8 (#7173) But you likely could run a step hotter. A street plug would be BCP7ES (#5030). I ran them at 12.2 CR, but make sure your mixture isn't lean. 1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1

Re: what spark plug? [Re: tigger1] #585094 01/17/10 11:02 AM 01/17/10 11:02 AM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440
blownzoom440 B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	thanks for posting about this plugr5671a-8[list# 4554] it is listed for the B1 bs head.i was just researching it. Last edited by METAL STORM; 01/17/10 11:05 AM.

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