TR5 same as TR55?
TR5 same as TR55? Title says it all. I will be doing a cam swap soon and will be changing the plugs while I'm in there.
Yes, I have searched, and I came up with several different answers, ranging from they are just factory gapped different to they have different sized electrodes, etc.
And while on the topic, what gap would you recommend for a 228R & headers (a tune ofc), practically everything else stock? I've heard .035 all the way to .060
Yes, I have searched, and I came up with several different answers, ranging from they are just factory gapped different to they have different sized electrodes, etc.
And while on the topic, what gap would you recommend for a 228R & headers (a tune ofc), practically everything else stock? I've heard .035 all the way to .060
Yes, same plug just gapped differently out of the box.
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Joined: Aug 2007
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From: Turnin' Wrenches Infractions: 005
I believe the original spec was .060 when our cars were new. GM then issued a revision for gap to be around .035. I have run .060, .055, .050, and .045 with no changed noticed between these.
Joined: Nov 2001
Posts: 34,638
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From: Schiller Park, ILL Member: #317
But there was no revision issued for gapping of platinum or conventional tip plugs on this engine. The smaller gap was just for the iridiums (#12571164).
