 bajones238
"3rd Year" Gold Supporting Member
Posts: 206
Loc: Georgia
Reg: 06-19-11
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07-12-12 12:10 PM - Post#2247447
Owner's manual calls for AC44 plugs, which don't appear to be available any more. 327/300, Carter AFB, combination of city and highway driving. I'd like to find a resistor plug but can live without it if I need to. Can anyone here give me a recommendation? Thanks
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449 |
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96bliss
Senior Member
Posts: 275
Loc: SoCal
Reg: 11-03-05
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07-12-12 12:12 PM - Post#2247448
In response to bajones238
Had the same dilemma. Found NOS AC44s on Ebay.
| 96 Impala SS BBB - bone stock
65 Impala 2dr HT - mostly original |
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 427SS65
"9th Year" Platinum Supporting Member & Moderator
Posts: 12264
Age: 67
Loc: St. Louis, MO
Reg: 12-11-03
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07-12-12 01:00 PM - Post#2247467
In response to 96bliss
I would use the available R45 which is one heat range hotter than the 44. The R stands for "resistor" (noise suppression).
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bajones238
"3rd Year" Gold Supporting Member
Posts: 206
Loc: Georgia
Reg: 06-19-11
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07-12-12 05:35 PM - Post#2247557
In response to 427SS65
Thanks. I was surprised to learn that Summit Racing still sells these, so I've ordered a set.
I also understand (from Big Dave, over on Impalas.net) that the new AC/Delco R44XLS interchanges with the old AC 44. If it looks like the 45s are burning too hot, or giving me detonation issues, I may try a set of the new 44s.
I appreciate the help!
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449 |
|
427SS65
"9th Year" Platinum Supporting Member & Moderator
Posts: 12264
Age: 67
Loc: St. Louis, MO
Reg: 12-11-03
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07-12-12 08:56 PM - Post#2247631
In response to bajones238
Watch the 'x' series. They have extended reach. Don't want them to hit the top of the piston!
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bajones238
"3rd Year" Gold Supporting Member
Posts: 206
Loc: Georgia
Reg: 06-19-11
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07-13-12 05:14 AM - Post#2247697
In response to 427SS65
Yes, after some research I found that out. I was able to find a set of original R44 plugs on Ebay, for which I paid way too much.
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449 |
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slammed1
Contributor
Posts: 670
Age: 42
Loc: Ark
Reg: 03-28-12
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07-13-12 07:33 PM - Post#2247958
In response to bajones238
I must be fortunate that I can still find Delco R44 and R45 here locally at normal prices. I did recently try Accel shorty plugs for my 12.5 to 1 compression 355 in my 80 Camaro. I also have a set of E3 plugs Im going to try because I run lots of older cylinder heads and always looking for other options even though I always prefer the 44/45s.
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