what sparkplugs and gap

wickedstang942000 · 04-11-2009, 04:51 PM

hey guys i'm building a 351 windsor stroked to 445 ci. it will have a ysi vortech sc making about 20 lbs of boost. would xp 3924 autolites be a good choice for plugs and what would be proper gap for that much boost. thanks for a response

buddha · 04-28-2009, 05:58 PM

I use the Autolite 3923's with no issues. With 20 psi and a good aftermarket ignition, I'd say try the gap at round .035

wickedstang942000 · 04-28-2009, 06:03 PM

thanks for the response. i've got a set of xp 3924,s. is the 3923 a colder plug.

04-11-2009, 04:51 PM	#1 (permalink)
wickedstang942000 Registered Member Join Date: Feb 2007 Posts: 7	what sparkplugs and gap hey guys i'm building a 351 windsor stroked to 445 ci. it will have a ysi vortech sc making about 20 lbs of boost. would xp 3924 autolites be a good choice for plugs and what would be proper gap for that much boost. thanks for a response

04-28-2009, 05:58 PM	#2 (permalink)
buddha Registered Member Join Date: Feb 2000 Location: Washington, MO Posts: 326	Re: what sparkplugs and gap I use the Autolite 3923's with no issues. With 20 psi and a good aftermarket ignition, I'd say try the gap at round .035 __________________ 93' Cobra with a cogged NOVI 2k, R331

04-28-2009, 06:03 PM	#3 (permalink)
wickedstang942000 Registered Member Join Date: Feb 2007 Posts: 7	Re: what sparkplugs and gap thanks for the response. i've got a set of xp 3924,s. is the 3923 a colder plug.

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