Spark plugs for high CR
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Joined: Jan 2008
Posts: 547
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From: Europe->Poland->Warsaw
Car: 1988 Pontiac Firebird
Engine: 305 LT1 intake&heads
Transmission: TH700r4
Axle/Gears: 3.73 10bolt GM
Spark plugs for high CR
my setup is 383 with 165cc heads (combusion chamber 64cc) and flat top pistons with valve reliefs so that sends me to high CR. intake is HSR, cam CS XR276HR-12. as i,m not able to change these cylinder heads now i need to get proper plugs, which spark plugs should i choose ?? any part numbers whould be very helpful.
best regards
best regards
Supreme Member
Joined: May 2001
Posts: 2,009
Likes: 5
From: Pitman, NJ
Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
Re: Spark plugs for high CR
Without knowing the exact heads it's impossible to give you a specific part number but I imagine a plug like Autolite 24's would be a good starting point.
Thread Starter
Banned
Joined: Jan 2008
Posts: 547
Likes: 0
From: Europe->Poland->Warsaw
Car: 1988 Pontiac Firebird
Engine: 305 LT1 intake&heads
Transmission: TH700r4
Axle/Gears: 3.73 10bolt GM
Re: Spark plugs for high CR
heads are Edelbrock 60859 http://www.summitracing.com/parts/EDL-60859/
Autolite is hard to get in Europe, can i use NGK BPR6FS (2623) or Champion RV12YC instead of AR24?
best regards
Autolite is hard to get in Europe, can i use NGK BPR6FS (2623) or Champion RV12YC instead of AR24?
best regards
Last edited by WASyL; Mar 15, 2010 at 06:42 PM.
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