Re: What peanut plugs for 452 heads?
[Re: lewtot184]
#1788012
03/26/15 08:33 PM
03/26/15 08:33 PM
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Joined: Jan 2003
Posts: 25,951 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,951
Rio Linda, CA
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Later BB motorhome heads used the 5/8" hex tapered-seat peanut plug and some on this forum report 452's with that plug.
The INTERNET, the MISinformation superhighway
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Re: What peanut plugs for 452 heads?
[Re: lewtot184]
#1788014
03/26/15 09:29 PM
03/26/15 09:29 PM
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Joined: Jun 2004
Posts: 741 Carson City, NV
440sourcedotcom
super stock
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super stock
Joined: Jun 2004
Posts: 741
Carson City, NV
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Quote:
that chevy plug is a 3/4" reach vs the stock 3/8" reach plug. long story short; DON"T! there never was a "peanut plug" made for the big block mopar iron head.
452 castings were made with both style plugs, many of them use the "peanut" style plugs. We've had several hundred of them on the shelf here at our shop.
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Re: What peanut plugs for 452 heads?
[Re: lewtot184]
#1788016
03/26/15 11:08 PM
03/26/15 11:08 PM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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I run a set of 452 heads and just installed autolight 23 5/8" hex tapered seat "peanut" plug. my 440 is from a 77 1 1/4 ton chassis motorhome. the heads I swapped on this weekend, another 452 set got a set of the AL23 plugs as well. but when I asked the machine shop(chebby guy)he said they are machined for the flat washer style plug but the tapered seat plug will seal. AL23 are what was in it and the plug hole/seat look the same to me with no leaks so far.
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Re: What peanut plugs for 452 heads?
[Re: edmopar440]
#1788018
03/27/15 03:27 AM
03/27/15 03:27 AM
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Joined: May 2003
Posts: 1,751 Graham, WA
Polarapete
top fuel
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top fuel
Joined: May 2003
Posts: 1,751
Graham, WA
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That is good to know..the CJ8 lawn mower plugs. Since I have some massaged 906 heads on my race 440 and header selection is still an open question that could be useful. Of course, I could simply run a set of individual pipes straight up and out through the hood and avoid the whole issue of clearance and burning my fingers while changing plugs. And it could be very entertaining when racing at night and I would be the only one on my block like that. But first I have to test the idea...
1986 Dodge Ramcharger 440 2wd, Bracket Racer Under Construction 1998 Ram 2500 QuadCab, new daily driver. 2008 Honda Element 2014 Carry-On 7x14 Cargo Trailer
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Re: What peanut plugs for 452 heads?
[Re: dogdays]
#1788020
03/27/15 01:29 PM
03/27/15 01:29 PM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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Quote:
Lewtot, yes there was a chevy in the '70s that used the plug. I had one and said I did in my first post. 3/8, tapered seat, short reach, 5/8" plug wrench.
Autolite 25 is one of those plugs. AC CR43TS is another, one I could find a jpeg for.
Before I posted I went to Rockauto and looked it up. Where did you get your information?
R.
thanks for the info. i remember back in the day when chevy started making angle plug heads for small blocks. i worked on a set of them, decades ago. thought they used a small 5/8" hex plug. not sure about the 5/8" reach.
my concern was putting a 3/4" reach plug (big block chevy) in a head designed for 3/8" reach and maybe a plug to piston collision.
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