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Author
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Topic: Best plugs for RPM heads
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-06-2004 12:52 PM
   
What the best spark plugs for my new 2.02 RPM heads #60259.
These will be on the 351w motor. Also do all of you use some kind of coating on the treads to keep them from meesing up the heads ? ------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-06-2004 05:15 PM
Ron,Autolite 3924, with some anti-sieze on the threads. When's it going to be ready? SteveW
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-06-2004 05:33 PM
Should be ready in 2 weeks. He's got all the parts in, and started the machine work.
I can't wait to drive it.  ------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Dubz
Gearhead Posts: 1718
From: Manitoba Canada
Registered: Oct 2002
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posted 03-06-2004 05:38 PM
I can't wait to hear about it gonna need more pics, i can host them if you need. When is it hitting the paint booth? [This message has been edited by Dubz (edited 03-06-2004).]
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-06-2004 05:39 PM
quote:
Originally posted by steve'66:
Ron,Autolite 3924, with some anti-sieze on the threads. When's it going to be ready? SteveW
Is that a smaller plug then the old 351w heads used #45
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-06-2004 06:12 PM
Ron,Yes smaller dia. longer threads too. You'll be using a "modern" 5/8" plug socket too.  SteveW
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-06-2004 07:34 PM
Steve, thats good maybe they will be alittle less of a pain to change.  So is that the best plug to use, or the one to start with. ------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-06-2004 08:45 PM
That's the standard heat range regular plug Ron. Later you can try one step colder, 3923 or even the racing plug 3923R which is a side gap plug. But for your relatively mild 351w the 3924 should be ok.SteveW
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-06-2004 09:02 PM
quote:
Originally posted by steve'66:
That's the standard heat range regular plug Ron. Later you can try one step colder, 3923 or even the racing plug 3923R which is a side gap plug. But for your relatively mild 351w the 3924 should be ok.SteveW
Mild ? this is the hottest motor I've ever had, at least I hope it will be. 
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 03-06-2004 09:55 PM
Wow Scoop!! I didn't know your motor was going to be ready so soon. I'm actually excited for too b/c as you know my motor plans are very similiar to what you have in this motor. Man you gotta let us know how this thing runs !! Paul ------------------
1970 Grande
H code 351W FMX
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-06-2004 10:24 PM
quote:
Originally posted by Fastymz:
Mild ? this is the hottest motor I've ever had, at least I hope it will be.
Key word is relatively.
It's not 12+-1 compression and turning 7,000+ rpms. SteveW
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sodi
Gearhead Posts: 197
From: Kenosha Wi. USA
Registered: Dec 2002
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posted 03-07-2004 10:15 AM
Fastmanz ; Doing the exact same thing to my 70 Mach right now.Waiting for the shop to finish their magic then it's my turn to drop her in good luck to all of us!! ENJOY !
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-07-2004 01:35 PM
Paul, Yup I can't wait getting alittle worried that'll it will all work out. And you all will be the second to know. Sodi, Good luck with your project. It's kinda scary to lay all the money down. Well it's a lot of money to me. So I hope it lasts and runs great too. And please call me Ron or SCOOP. Steve I was J/K with you ------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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TomP
Gearhead Posts: 5761
From: Delta BC Canada
Registered: Dec 99
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posted 03-09-2004 12:58 PM
"Modern" 5/8" plug socket. LOLI bought Edelbrock FE heads and they use those newfangled little plugs. I have a 5/8" plug socket i've hardly ever had to use.
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-09-2004 10:58 PM
So,How's the engine coming? SteveW
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-10-2004 01:58 AM
quote:
Originally posted by steve'66:
So,How's the engine coming? SteveW
Not sure Steve I'll give them a call in the morning. ------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-10-2004 02:13 AM
Steve E-Brock recomended to use #3926 is this a colder or hotter then the 3924 ? They said just make sure the plugs are 3/4" reach.
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-10-2004 06:48 PM
Steve he said at least another 2-3 weeks. The heads are on back order. 
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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CHIPSBAD67
Gearhead Posts: 396
From: LOU,KY;USA
Registered: Sep 2003
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posted 03-10-2004 10:08 PM
hey steve, ive been using autolite 5224's and side gapping them myself. would the 3293R plug be better? also how is the "r" plug different from the one im running aside from being pre-gapped? is it a colder plug?------------------
306, 4speed, 4.11's....best 1/8 mile 7.58 at 92mph with 1.72 60ft. PUMP GAS/NO ADDERS/STREET TIRES
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-11-2004 12:27 AM
quote:
Originally posted by Fastymz:
Steve E-Brock recomended to use #3926 is this a colder or hotter then the 3924 ? They said just make sure the plugs are 3/4" reach.
Ron, 3926s would be a "hot" plug. I've never heard of that recomendation. Always heard 3924s for all the E'heads even my 440 e-heads use 3924. Since 3923s are colder, and Alex has recomended 3923R plugs for our 12-1 engine I'm guessing they aren't for you. I haven't bought any "R" plugs yet, just 3923s so far. I've heard good things about the side gapped R (racing) plugs and that you don't change their gap. We just don't worry about chasing every h.p. like Alex does. If Mel's '66 was Alex's it'd be running 9's. SteveW
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-11-2004 01:19 PM
Thanks Steve ------------------
SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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CHIPSBAD67
Gearhead Posts: 396
From: LOU,KY;USA
Registered: Sep 2003
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posted 03-11-2004 11:01 PM
hey steve.------------------
306, 4speed, 4.11's....best 1/8 mile 7.58 at 92mph with 1.72 60ft. PUMP GAS/NO ADDERS/STREET TIRES
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 03-11-2004 11:41 PM
quote:
Originally posted by CHIPSBAD67:
hey steve, ive been using autolite 5224's and side gapping them myself.
Hey Chip, Sorry but, I don't know what a 5224 plug is, and I've never tried side gapping them.  If you're talking about a 3924 and modifying it to a side gap you are in my "uncharted waters". If your heads take a 39-- series Autolite plug, try a 3923R. And yes the 3923 is colder than a 3924 with or w/o the R. Hope this helps, just unsure of what plugs your heads take. SteveW
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CHIPSBAD67
Gearhead Posts: 396
From: LOU,KY;USA
Registered: Sep 2003
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posted 03-12-2004 09:12 PM
heck steve, i honestly dont know. i just stuck in what afr told me to. i called autolite to see if afr was correct and they recomended the same plug before i told them thats what afr said. i can tell you that side gapping the ones i got, the car did pick up a tiny but noticable amount. sometimes its funny the to see the absolute tricks not work and the questionable ones like sidegapping work. there are a few things like this that seemed to help my car and you just are totally suprised, but happy. then you do that thing that cost you a wad, but you knew was the ace, and nadda.------------------
306, 4speed, 4.11's....best 1/8 mile 7.58 at 92mph with 1.72 60ft. PUMP GAS/NO ADDERS/STREET TIRES
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