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416 Icon Pistons. #1115782
11/17/11 08:41 PM 11/17/11 08:41 PM
Joined: Jan 2003
Posts: 412
Hampton Va
gtsdon Offline OP
mopar
gtsdon  Offline OP
mopar

Joined: Jan 2003
Posts: 412
Hampton Va
Starting to compare parts for my 416 stroker project and have a few questions I was hoping to get some help with. Talked with Scat Techs today and was told their kits come with Icon pistons. I have never herd of Icon Pistons before and discovered they are manufactured by the same company that builds Silverlights and Keith Black. Anyone used these pistons that can comment on their quality?

Secondly, what piston design (flat top, dished etc) is best suited for use with open chamber 340 E-Heads? This motor will serve street and strip duty, must run on pump gas and make 550 HP. Any recommendations would be appreachated.
Re: 416 Icon Pistons. [Re: gtsdon] #1115783
11/17/11 09:49 PM 11/17/11 09:49 PM
Joined: Jan 2003
Posts: 20,771
A collage of whims
topside Online content
Too Many Posts
topside  Online Content
Too Many Posts

Joined: Jan 2003
Posts: 20,771
A collage of whims
Can't help you with much here, but I bought a set of Icons for a 440 =.040 build. Nice-looking slug, esp. for the price.
Piston design as far as the top will depend on CR you want, and what fuel you're using. You'll have less drag with a thinner-than-OEM ring package.
Re: 416 Icon Pistons. [Re: topside] #1115784
11/18/11 09:54 AM 11/18/11 09:54 AM
Joined: Jan 2004
Posts: 550
Ma
Voluster Offline
mopar
Voluster  Offline
mopar

Joined: Jan 2004
Posts: 550
Ma
I run the Icon pistons in my stroker 416
thats what muscle motors sold with their kit

They have been in there a year and a half hit them with plenty of nitrous on them they seem to be fine
Re: 416 Icon Pistons. [Re: Voluster] #1115785
11/18/11 01:22 PM 11/18/11 01:22 PM
Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
C
cudadoug Offline
master
cudadoug  Offline
master
C

Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
Icon flat tops, SCAT forged crank and I beam rods here in a 416. Pistons were NICE OOTB, and we have about 80 runs on them so far.

10.14 @ 128 best through the muffs, flat tappet cam @ 3100#.

As for the desired piston design with those Eddy heads? I'd say a dish (10.5:1) for pump gas.
Re: 416 Icon Pistons. [Re: cudadoug] #1115786
11/19/11 12:38 AM 11/19/11 12:38 AM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
super stock
dodgeboy11  Offline
super stock

Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
You're going to need more compression and camshaft with those heads as they don't flow enough (IMO) to support 550 hp without some fairly complete and competent port work. I wouldn't run less than 11:1. The ICON pistons are very nice pieces. Just make sure to de-burr the valve reliefs as I remember them being a tad sharp out of the box. They can handle nitrous fairly well and hold up well to some pretty serious abuse.
Re: 416 Icon Pistons. [Re: dodgeboy11] #1115787
11/19/11 10:55 AM 11/19/11 10:55 AM
Joined: May 2004
Posts: 12,387
Taxes & Virus's R-US, NY
Dragula Offline
I Live Here
Dragula  Offline
I Live Here

Joined: May 2004
Posts: 12,387
Taxes & Virus's R-US, NY
I have a couple sets. The first set I just finished installing in my 408 stroker. They are the Icon 745's and they seem pretty good quality and the fit was good. This is a 408 W2 motor rebuild, and the girdle just showed up, so it should be done soon. The engine will be over 500hp..

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: 416 Icon Pistons. [Re: gtsdon] #1115788
11/19/11 12:44 PM 11/19/11 12:44 PM
Joined: Aug 2003
Posts: 1,313
Charlotte, NC
L
LSP Offline
pro stock
LSP  Offline
pro stock
L

Joined: Aug 2003
Posts: 1,313
Charlotte, NC
Quote:

I have never herd of Icon Pistons before and discovered they are manufactured by the same company that builds Silverlights and Keith Black. Anyone used these pistons that can comment on their quality?



99.9% of this board is not going to be able to comment on piston quality (shiny isn't a quality). It takes a lot more than an outside mic and magnification, and the equipment properly to measure piston quality is in the 100'$ of thousand$.

Anyone that has tried Icon pistons can tell you though if there were any sizing, fitting, deburring, or durabilty issues.

Re: 416 Icon Pistons. [Re: LSP] #1115789
11/19/11 02:01 PM 11/19/11 02:01 PM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
super stock
dodgeboy11  Offline
super stock

Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
Quality - Noun:
The standard of something as measured against other things of a similar kind

I'm thinking the number of members on this board to be slightly higher than .1% that can comment on the quality of Icon pistons.

Do you just enjoy

or can you simply not help yourself?
Re: 416 Icon Pistons. [Re: dodgeboy11] #1115790
11/19/11 02:22 PM 11/19/11 02:22 PM
Joined: Aug 2003
Posts: 1,313
Charlotte, NC
L
LSP Offline
pro stock
LSP  Offline
pro stock
L

Joined: Aug 2003
Posts: 1,313
Charlotte, NC
Quote:

Quality - Noun:
The standard of something as measured against other things of a similar kind

I'm thinking the number of members on this board to be slightly higher than .1% that can comment on the quality of Icon pistons.

Do you just enjoy

or can you simply not help yourself?



I'm not trying to stir the pot, I'm just trying to clarify that there several dimensions and relationships on a piston which affect performance that cannot be measured with typical race engine shop inspection equipment, regardless of who's piston it is.
Re: 416 Icon Pistons. [Re: LSP] #1115791
11/19/11 04:02 PM 11/19/11 04:02 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
master
70AARcuda  Offline
master

Joined: Jan 2003
Posts: 9,826
las vegas
Quote:

Quote:

Quality - Noun:
The standard of something as measured against other things of a similar kind

I'm thinking the number of members on this board to be slightly higher than .1% that can comment on the quality of Icon pistons.

Do you just enjoy

or can you simply not help yourself?



I'm not trying to stir the pot, I'm just trying to clarify that there several dimensions and relationships on a piston which affect performance that cannot be measured with typical race engine shop inspection equipment, regardless of who's piston it is.




Did not read that he was building a Pro STocker...

Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: 416 Icon Pistons. [Re: LSP] #1115792
11/20/11 01:56 AM 11/20/11 01:56 AM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
super stock
dodgeboy11  Offline
super stock

Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
Quote:

Quote:

Quality - Noun:
The standard of something as measured against other things of a similar kind

I'm thinking the number of members on this board to be slightly higher than .1% that can comment on the quality of Icon pistons.

Do you just enjoy

or can you simply not help yourself?



I'm not trying to stir the pot, I'm just trying to clarify that there several dimensions and relationships on a piston which affect performance that cannot be measured with typical race engine shop inspection equipment, regardless of who's piston it is.



Ah, I see. I was just wondering as it could be taken a few different ways.
Re: 416 Icon Pistons. [Re: 70AARcuda] #1115793
11/20/11 01:58 AM 11/20/11 01:58 AM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
super stock
dodgeboy11  Offline
super stock

Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
Quote:


Did not read that he was building a Pro STocker...




Re: 416 Icon Pistons. [Re: dodgeboy11] #1115794
11/20/11 07:51 AM 11/20/11 07:51 AM
Joined: Dec 2009
Posts: 56
Indiana
SB Dakota Offline
member
SB Dakota  Offline
member

Joined: Dec 2009
Posts: 56
Indiana
I just got a set of KB 416 piston for my 416 engine.

Larry Anderson 87 Dodge Dakota 416 Stroker 71 Dodge Dart http://i58.photobucket.com/albums/g254/rules371/88888888888-1.jpg
Re: 416 Icon Pistons. [Re: 70AARcuda] #1115795
11/20/11 11:45 AM 11/20/11 11:45 AM
Joined: Aug 2003
Posts: 1,313
Charlotte, NC
L
LSP Offline
pro stock
LSP  Offline
pro stock
L

Joined: Aug 2003
Posts: 1,313
Charlotte, NC
Quote:

Did not read that he was building a Pro STocker...



It's the OP's option to inspect all the parts going into his engine to the best of his ability, or he can just dust 'em off and toss everything together, doesn't make a difference to me.
Re: 416 Icon Pistons. [Re: LSP] #1115796
11/20/11 12:00 PM 11/20/11 12:00 PM
Joined: Mar 2003
Posts: 2,501
PA
moparacer Offline
master
moparacer  Offline
master

Joined: Mar 2003
Posts: 2,501
PA
I used KB forged pistons in the 408 for my old duster in 2007 and they are still going strong.

Been 10.40s and even survived a broken Eagle cast crank....

67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
Re: 416 Icon Pistons. [Re: LSP] #1115797
11/20/11 12:43 PM 11/20/11 12:43 PM
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
P
Performance Only Offline
top fuel
Performance Only  Offline
top fuel
P

Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
Quote:

Quote:

Quality - Noun:
The standard of something as measured against other things of a similar kind

I'm thinking the number of members on this board to be slightly higher than .1% that can comment on the quality of Icon pistons.

Do you just enjoy

or can you simply not help yourself?



I'm not trying to stir the pot, I'm just trying to clarify that there several dimensions and relationships on a piston which affect performance that cannot be measured with typical race engine shop inspection equipment, regardless of who's piston it is.



can you clarify which dimensions and relationships we supposedly can't measure but should be most concerned about?

machine shop owner and engine builder
Re: 416 Icon Pistons. [Re: Performance Only] #1115798
11/20/11 08:29 PM 11/20/11 08:29 PM
Joined: May 2004
Posts: 1,522
Ste-Sophie, Quebec, Canada
W
Wedgeman Offline
pro stock
Wedgeman  Offline
pro stock
W

Joined: May 2004
Posts: 1,522
Ste-Sophie, Quebec, Canada
Hers are KB 745 in my 408

They seem good quality as they held to serious abuse in my car, shifting at 6800 rpm and still good.

The step dish provide good quench too (.034 here)
and did not make my engine ping with my old iron heads and 10.1:1 cr

Dan
Re: 416 Icon Pistons. [Re: Wedgeman] #1115799
11/20/11 08:41 PM 11/20/11 08:41 PM
Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
Rapid340 Offline
top fuel
Rapid340  Offline
top fuel

Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
I would not hesitate to use these pistons.

1971 Factory Appearing Duster 340 11.000 @ 122 mph
Re: 416 Icon Pistons. [Re: Rapid340] #1115800
11/20/11 11:01 PM 11/20/11 11:01 PM
Joined: Jan 2003
Posts: 412
Hampton Va
gtsdon Offline OP
mopar
gtsdon  Offline OP
mopar

Joined: Jan 2003
Posts: 412
Hampton Va
Looks like a majority of people using these pistons would use them again. I plan to use my old 340 top end- Edelbrock 6017 open chamber heads, Crane Gold roller rockers and Air Gap intake. The heads were ported in the past and the intake has been port matched. Would I be better off running open chamber heads or should I consider milling the heads to closed chamber? Which head configuration has a better piston selection and does one configuration have a performance gain over the other? Thanks for the responses.
Re: 416 Icon Pistons. [Re: gtsdon] #1115801
11/21/11 01:30 AM 11/21/11 01:30 AM
Joined: Aug 2003
Posts: 43,173
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,173
Bend,OR USA
I have used one set of the KB forged pistons, probally sold under the Icon brand name now . they fit well, balanced well and performed well in the motor on the dyno. The motor is a BB 440 with a 3.91 stroke crankshaft bored to 4.380. I don't remember the part # but they where flat tops with two valve reliefs, using a set of B!-BS heads that had 59 CC chambers the motor had right at 13.0to 1 compression ratio, the motor made 720 HP at 7000 RPM and had not reached peak HP at that RPM This is a bracket motor and the owner was there and did not want to rev it past 7000 RPM, that is the reason for stopping the pulls at 7000 RPM. IHTHs, BTW I'm going to buy another set with a reverse dome for a street and strip motor with the same stroke and rod lengths asthe bracket motor, I'll be shooting for 10.5 to 1 comp. ratio for pump gas

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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