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Anybody Used The KB Forged Pistons? #818555 09/30/10 07:01 PM 09/30/10 07:01 PM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 OP top fuel
Jwilli500 OP top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	And if so, what was your ipression with them? Fit? Finish? Weight, Etc. The price sure looks good but I never hear anyone mentioning using them. Thanks!

Re: Anybody Used The KB Forged Pistons? [Re: Jwilli500] #818556 09/30/10 07:15 PM 09/30/10 07:15 PM
Joined: Jan 2008 Posts: 377 Michigan Troll B blk00rt enthusiast
blk00rt enthusiast B Joined: Jan 2008 Posts: 377 Michigan Troll	I run the keith black forged pistons in my stroker magnum engine...the builder did not say he had any problems with them. Mine sees some hard street miles every year and has been built for about 4-5 years now...probably have 10-15k on it.. Rob Dunn 1976 Dart Sport 360 2000 dakota RT 408 with 150 nitrous 2013 Dodge Ram 1500 Hemi 2009 Jeep Patriot

Re: Anybody Used The KB Forged Pistons? [Re: Jwilli500] #818557 09/30/10 08:49 PM 09/30/10 08:49 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	They seem to have a decent reputation. I picked up a set for a 440 build I'm doing and think they'll do fine for my street / strip application. The valve reliefs are plenty big and the finish machining looks good. The only thing I wasn't impressed with is that my pistons are quite a bit heavier than advertised. The spec was something like 686 + 141 for the pin and they were actually 703 + 156, IIRC. I wasn't expecting that much extra "beef" compared to the 650-ish gram Rosses my other engine uses.

Re: Anybody Used The KB Forged Pistons? [Re: BradH] #818558 10/01/10 01:53 PM 10/01/10 01:53 PM
Joined: Jan 2003 Posts: 3,719 Space Station #5 471Magnum master
471Magnum master Joined: Jan 2003 Posts: 3,719 Space Station #5	I built a 440 with them a while back. Real nice looking pistons. No immediate issues with them. About 50 gram heavier than a comparable Ross or Diamond. I got a smoking deal on them through summit. Like $299 IIRC. FWIW, I'm almost certain these are the same as 440Source house brand. -Jim I can fix it... my old man is a television repairman. He's got the ultimate set of tools... I can fix it. Currently Mopar-less

Re: Anybody Used The KB Forged Pistons? [Re: 471Magnum] #818559 10/01/10 06:54 PM 10/01/10 06:54 PM
Joined: Apr 2007 Posts: 807 Toronto, Canada D dirtybee super stock
dirtybee super stock D Joined: Apr 2007 Posts: 807 Toronto, Canada	ya i have them in my 500" low deck from 440source. they are the pistons that come with their kits so there are lots of people running them.

Re: Anybody Used The KB Forged Pistons? [Re: dirtybee] #818560 10/01/10 11:58 PM 10/01/10 11:58 PM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 OP top fuel
Jwilli500 OP top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	Thanks for the replies guys! The weight was a concern, the pistons I am looking at are about 170 grams heavier than the Diamond version!

Re: Anybody Used The KB Forged Pistons? [Re: Jwilli500] #818561 10/02/10 12:08 AM 10/02/10 12:08 AM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	just make sure that you are comparing the pistons only and the weight of the pin is not included. 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: Anybody Used The KB Forged Pistons? [Re: 70AARcuda] #818562 10/02/10 12:23 AM 10/02/10 12:23 AM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Stock pins can be shortened 1/4" on each end as w 1.09" dia there is still plenty of contact area (pressed pins of course) to have no prob. And w your drill press & dremel might be able to lighten the piston. This worked fine on a stock cast piston that was raced but they are heavy & have alot of extra material to work w whereas yours may not. Just food for thought live every 24 hour block of time like it's your last day on earth

Re: Anybody Used The KB Forged Pistons? [Re: 70AARcuda] #818563 10/03/10 01:50 AM 10/03/10 01:50 AM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 OP top fuel
Jwilli500 OP top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	Yeah, that was the first thing I thought too. The KB listing for the IC837 says 709/141 for the Piston/Pin. The Diamond 52407 listing says537 grams. They are both .990 pin pistons. Just seems like a lot of difference, almost 6 1/4 ounces? Also the KB piston online listing mentions a special ring gap for the top ring? I thought that was just on the Hypereutectic pistons... Quote: just make sure that you are comparing the pistons only and the weight of the pin is not included.

Re: Anybody Used The KB Forged Pistons? [Re: Jwilli500] #818564 10/03/10 10:50 AM 10/03/10 10:50 AM
Joined: Jan 2003 Posts: 3,719 Space Station #5 471Magnum master
471Magnum master Joined: Jan 2003 Posts: 3,719 Space Station #5	Quote: Also the KB piston online listing mentions a special ring gap for the top ring? I thought that was just on the Hypereutectic pistons... KB specs listed online seem to be a little goofy last time I checked. That note is definitely applicable to the hypers. Seems they list the same weight for several different pistons regardless of CR and CH. I think they list a standard weight for the basic forging regardless of the finished specs. -Jim I can fix it... my old man is a television repairman. He's got the ultimate set of tools... I can fix it. Currently Mopar-less

Re: Anybody Used The KB Forged Pistons? [Re: 471Magnum] #818565 10/03/10 04:27 PM 10/03/10 04:27 PM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 OP top fuel
Jwilli500 OP top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	Well the KB's are a "Stepped Dish" piston listed as 12cc? (The Diamond Piston is not stepped and yet it's still 12.5cc?) Must not be much of a step? Yet it is enough to require a bottom ring support... Last edited by Jwilli500; 10/03/10 04:29 PM.

Re: Anybody Used The KB Forged Pistons? [Re: Jwilli500] #818566 10/04/10 04:09 AM 10/04/10 04:09 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	I have the KB pistons in my 63's 440 and my sons 400. Been running them and racing with them for years. Ron

Re: Anybody Used The KB Forged Pistons? [Re: 383man] #818567 10/04/10 02:16 PM 10/04/10 02:16 PM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 OP top fuel
Jwilli500 OP top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	Are they Domed or Flat-Tops or Dished or Step-Dished? Quote: I have the KB pistons in my 63's 440 and my sons 400. Been running them and racing with them for years. Ron Last edited by Jwilli500; 10/04/10 02:17 PM.

Re: Anybody Used The KB Forged Pistons? [Re: Jwilli500] #818568 10/04/10 04:32 PM 10/04/10 04:32 PM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: Are they Domed or Flat-Tops or Dished or Step-Dished? Quote: I have the KB pistons in my 63's 440 and my sons 400. Been running them and racing with them for years. Ron Flat tops with valve reliefs. Ron

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