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Can anyone help identify these?? #238562
02/28/09 12:04 AM
02/28/09 12:04 AM
Joined: Oct 2007
Posts: 846
Illinois
moparmattkos Offline OP
mopar addict
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Illinois
I have some of these pistons i got with some parts i bought and i cant figure out what there are but id like to use them if i could. The only number on the says 437rb ???









www.sikosracing.net Heads up Drag racing
Re: Can anyone help identify these?? [Re: moparmattkos] #238563
02/28/09 12:09 AM
02/28/09 12:09 AM
Joined: Feb 2004
Posts: 1,093
Long Beach, CA
Mike Swann Offline
super stock
Mike Swann  Offline
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Posts: 1,093
Long Beach, CA
Your methods leave something to be desired for measuring piston diameter, lol, but I would guess its a 4 3/8 bore 451 with a 383 rod length for a lo-deck.


8.30's @3400 lbs
Re: Can anyone help identify these?? [Re: Mike Swann] #238564
02/28/09 12:34 AM
02/28/09 12:34 AM
Joined: Nov 2003
Posts: 10,384
Upstate NY
Bigcube Offline
I Live Here
Bigcube  Offline
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Posts: 10,384
Upstate NY
I know, I know! They're pistons


Jim

Re: Can anyone help identify these?? [Re: moparmattkos] #238565
02/28/09 12:54 AM
02/28/09 12:54 AM
Joined: Mar 2005
Posts: 862
Iowa State fan
kilroy Offline
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Iowa State fan

http://store.summitracing.com/partdetail.asp?part=ROS%2D81762&autoview=sku

do they have 81762 on the quench part of the piston?

also found this on a search at google. Couldnt find it our sale section though
moparts: Engine Parts For Sale - Big Block - FebThey come with file fit rings( .020 top, .016 bottom) They have maybe 1000 miles on them. They have 81762 on the top of the piston and 437rb on the bottom ...
board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5007930&Main=4988487


1973 Charger, former SE, former auto

I'm not trying to be difficult, it comes naturally....
Re: Can anyone help identify these?? [Re: kilroy] #238566
02/28/09 01:02 AM
02/28/09 01:02 AM
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
V
Von Offline
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Von  Offline
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V

Joined: Oct 2003
Posts: 3,698
NE Oklahoma
They are Ross pistons.


72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
Re: Can anyone help identify these?? [Re: kilroy] #238567
02/28/09 01:04 AM
02/28/09 01:04 AM
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
V
Von Offline
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NE Oklahoma
Quote:


http://store.summitracing.com/partdetail.asp?part=ROS%2D81762&autoview=sku

do they have 81762 on the quench part of the piston?

also found this on a search at google. Couldnt find it our sale section though
moparts: Engine Parts For Sale - Big Block - FebThey come with file fit rings( .020 top, .016 bottom) They have maybe 1000 miles on them. They have 81762 on the top of the piston and 437rb on the bottom ...
board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5007930&Main=4988487




The pistons you found are 4.360 dome ross pistons, 3.75 stroke. I know because I was kicking around buying them and the seller sold them. Hence the reason you cant find the ad.


72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
Re: Can anyone help identify these?? [Re: Von] #238568
02/28/09 01:49 AM
02/28/09 01:49 AM
Joined: Oct 2007
Posts: 846
Illinois
moparmattkos Offline OP
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moparmattkos  Offline OP
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Illinois
Are they for a low deck or a tall deck???


www.sikosracing.net Heads up Drag racing
Re: Can anyone help identify these?? [Re: moparmattkos] #238569
02/28/09 01:59 AM
02/28/09 01:59 AM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
S
Sport440 Offline
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Canton, Ohio
They look like Ross pistons to me! With the RB cast into them its a sure bet that they are not for a low deck. mike

Re: Can anyone help identify these?? [Re: kilroy] #238570
02/28/09 09:16 AM
02/28/09 09:16 AM
Joined: Oct 2007
Posts: 846
Illinois
moparmattkos Offline OP
mopar addict
moparmattkos  Offline OP
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Joined: Oct 2007
Posts: 846
Illinois
Quote:


http://store.summitracing.com/partdetail.asp?part=ROS%2D81762&autoview=sku

do they have 81762 on the quench part of the piston?

also found this on a search at google. Couldnt find it our sale section though
moparts: Engine Parts For Sale - Big Block - FebThey come with file fit rings( .020 top, .016 bottom) They have maybe 1000 miles on them. They have 81762 on the top of the piston and 437rb on the bottom ...
board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5007930&Main=4988487







They dont have any visable numbers on the quench of the piston.


www.sikosracing.net Heads up Drag racing
Re: Can anyone help identify these?? [Re: Sport440] #238571
02/28/09 12:35 PM
02/28/09 12:35 PM
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Von Offline
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NE Oklahoma
Quote:

With the RB cast into them its a sure bet that they are not for a low deck. mike




FWIW, My 470 lowdeck pistons have RB cast into them also?


72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
Re: Can anyone help identify these?? [Re: Von] #238572
02/28/09 12:43 PM
02/28/09 12:43 PM
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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S/ST 3040 Offline
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On the south side of Nowhere
They sure have Ross machining characteristics but, it looks like
their forging supplier ran out of that particular (Ross) blank
since the name has been machined away inside.

Re: Can anyone help identify these?? [Re: moparmattkos] #238573
02/28/09 01:43 PM
02/28/09 01:43 PM
Joined: Nov 2004
Posts: 3,619
Norwich CT USA
Defbob Offline
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Norwich CT USA
Easy, that's a Stanley 25ft Tape Measure

Re: Can anyone help identify these?? [Re: Von] #238574
02/28/09 01:52 PM
02/28/09 01:52 PM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Sport440 Offline
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Canton, Ohio
Quote:

Quote:

With the RB cast into them its a sure bet that they are not for a low deck. mike




FWIW, My 470 lowdeck pistons have RB cast into them also?





Well, I guess Im wrong about that then. And I said it was a sure bet. mike

Re: Can anyone help identify these?? [Re: moparmattkos] #238575
02/28/09 01:59 PM
02/28/09 01:59 PM
Joined: Mar 2008
Posts: 883
Affton MO
Q
qwkmopardan Offline
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Posts: 883
Affton MO
They are definetley Ross pistons. They were custom made in the Ross factory for most likely Probe Industries. I have had a bunch of customs made through Probe and the BB Mopar pistons allways had the Ross machined off. They did forget once and I got them with Ross not machined off. As far as what they fit, a micrometer or at least dig. caliper could measure bore size and comp height. They look like they came out of a motor that had a bunch of debree from spun bearing or a flattened camshaft. My

Re: Can anyone help identify these?? [Re: qwkmopardan] #238576
02/28/09 07:39 PM
02/28/09 07:39 PM
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames Offline
pro stock
moparmanjames  Offline
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Posts: 1,260
Las Vegas NV
Yeah you will have to measure the compression height from the middle of the pin to piston deck to get an Idea of what length rod and stroke they were used for. here are a few pics of my Ross 4.375 x 4.375 bore and stroke pistons that use a 7.1" rod.

5060218-002.JPG (205 downloads)
Re: Can anyone help identify these?? [Re: moparmanjames] #238577
02/28/09 07:40 PM
02/28/09 07:40 PM
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames Offline
pro stock
moparmanjames  Offline
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Las Vegas NV
another

5060222-005.JPG (152 downloads)
Re: Can anyone help identify these?? [Re: moparmanjames] #238578
02/28/09 07:42 PM
02/28/09 07:42 PM
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames Offline
pro stock
moparmanjames  Offline
pro stock

Joined: Jan 2005
Posts: 1,260
Las Vegas NV
last one

5060226-010.JPG (126 downloads)
Re: Can anyone help identify these?? [Re: moparmanjames] #238579
02/28/09 08:44 PM
02/28/09 08:44 PM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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Eighty Four, PA
They would make good ash trays from the looks of them.

Re: Can anyone help identify these?? [Re: B G Racing] #238580
02/28/09 10:00 PM
02/28/09 10:00 PM
Joined: Oct 2007
Posts: 846
Illinois
moparmattkos Offline OP
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Illinois
Quote:

They would make good ash trays from the looks of them.





The rest of them are really nice just this one has a few boogers on it. If i can figure out what they are i was gonna order a replacement piston for this one.


www.sikosracing.net Heads up Drag racing
Re: Can anyone help identify these?? [Re: moparmattkos] #238581
03/01/09 09:13 PM
03/01/09 09:13 PM
Joined: Jan 2003
Posts: 74,907
U.S.S.A.
JohnRR Offline
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Quote:

Quote:

They would make good ash trays from the looks of them.





The rest of them are really nice just this one has a few boogers on it. If i can figure out what they are i was gonna order a replacement piston for this one.




you spent the money on those pistons but you don't have a set of cailpers and a CALCULATOR ??? would take 10 minutes to figure out what they are with those 2 tools and a







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