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460 pistons
October 25 2000 at 10:13 PM
No score for this post Steve Pearson (no login)
from IP address 204.68.140.35
--------------------------------------------------------------------------------
Does anyone have a part number for direct replacement pistons for '69/'70 365Hp Lincoln 460's? The piston has a slight dish, say 7-8cc's and valve reliefs. I can only find flat tops or units with grand canyon dishes. Keith Black is so unsure of their castings that they list a direct replacement, but have a footnote that explains early deck height figures are so low that the piston leaves no room for deck cleanup. Duh!!! all zero deck pistons are this way. So needless to say, it doesn't leave me with a warm fuzzy for KB.
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Dwyan Calvert
(no login)
209.34.34.134 460 pistons(OEM)
No score for this post October 26 2000, 7:59 PM
I have looked since the early 80's for the pistons to which you refer and have never found a set. Ford ole timers have told me that ford obsoleted these units by 1973 and just started replacing all with the dished ones. It was as if they never wanted anyone to know they made the flat top version. If you locate a supply, let me know ...I would sure like some. Meanwhile, many guys are just cutting the domes off the TRW forged pistons and making adjustments for the lower deck height on the early blocks.dc
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Mike R.
(no login)
32.97.239.18 460 piston (OEM)
No score for this post October 27 2000, 4:32 PM
I don't have an answer, but another item of interest. Have you ever seen a set of 460 police intercepter pistons from 73-74. They were even better. They were forged and had one large valve relief (like a CJ/SCJ). They also had a very slight dish that was only about .080" deep. I don't know why the manufacturers never made one similar. They are really nice. Unfortunately I have a nice set of 7 of them.
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Big Un
(no login)
63.16.127.144 Try this
No score for this post November 1 2000, 12:42 AM
My brother is building an engine with KB pistons and had the same early block/low deck height issue. He bought the pistons and had the quench cut .020" to come up with zero deck. Cost him all of $35 for AMS to do it. Perfect set up. The fact of the matter is that the aftermarket produces in volume and some of those limited year, low deck deals just aren't going to be matched off the shelf. KBs are a very good solution.
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Steve Pearson
(no login)
204.68.140.35 KB Pistons
No score for this post November 1 2000, 6:05 PM
Hey Big Un,
Which part number did he use? My original set is starting to get tired and I am beginning to get desparate. You can ask just so much from the original set of pistons. And I thought working on FE's was a pain...
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Big Un
(no login)
63.23.54.54 That was a Windsor
No score for this post November 5 2000, 10:29 PM
My bro built a Windsor, but had the exact same issue with the KB pistons. The '69 block had a .020" lower deck height than the more common later blocks. KB said they only did pistons for the later stuff and if he used their pistons they would end up above deck. He bought the pistons, did a preliminary assembly, miked how far above deck they were, marked them and took them to the machine shop. They cut the quench (the cuts varied from .008" to .016") and ended up with exactly zero deck. $35. I would highly recommend doing the exact same thing. If you don't have free floating wrist pins, just have them all cut by the deck height differential. In his case this would have been .020", good luck. That is what I would do.
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jack k
(no login)
152.163.197.183 TRW pistons
No score for this post November 5 2000, 10:06 AM
I built a 460 with the cj heads rods ect.. I also used a C9VE block that is suppose tohave the low deck height. i used a set of TRW 2404f. they have a 19cc cup, with 72 cc heads it should be about 9.67 to 1
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460 TOM
(no login)
63.28.78.79 PISTON CHOICE..
No score for this post November 6 2000, 10:51 PM
STEVE , BUY THE KB P/N 138 HAVE THE .020 CUT OFF THE TOP THAT SHOULD LEAVE YOU WITH ABT 18CC CUP AND GIVE YOU A GREAT PISTON WITH ZERO DECK HEIGHT, TWENTY THOU OFF THE TOP WONT HURT A THING AS THE DOMES ARE PLENTY THICK ...IT'S FUNNY THAT A GUY WILL HAVE EVERYTHING ON HIS MOTOR MACHINED BUT IS ALWAYS FEARFUL OF CUTTING HIS PISTONS. MEASURE EVERYTHING DO THE MATH BUILD A GREAT MOTOR.
October 25 2000 at 10:13 PM
No score for this post Steve Pearson (no login)
from IP address 204.68.140.35
--------------------------------------------------------------------------------
Does anyone have a part number for direct replacement pistons for '69/'70 365Hp Lincoln 460's? The piston has a slight dish, say 7-8cc's and valve reliefs. I can only find flat tops or units with grand canyon dishes. Keith Black is so unsure of their castings that they list a direct replacement, but have a footnote that explains early deck height figures are so low that the piston leaves no room for deck cleanup. Duh!!! all zero deck pistons are this way. So needless to say, it doesn't leave me with a warm fuzzy for KB.
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
Author Reply
Dwyan Calvert
(no login)
209.34.34.134 460 pistons(OEM)
No score for this post October 26 2000, 7:59 PM
I have looked since the early 80's for the pistons to which you refer and have never found a set. Ford ole timers have told me that ford obsoleted these units by 1973 and just started replacing all with the dished ones. It was as if they never wanted anyone to know they made the flat top version. If you locate a supply, let me know ...I would sure like some. Meanwhile, many guys are just cutting the domes off the TRW forged pistons and making adjustments for the lower deck height on the early blocks.dc
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
Mike R.
(no login)
32.97.239.18 460 piston (OEM)
No score for this post October 27 2000, 4:32 PM
I don't have an answer, but another item of interest. Have you ever seen a set of 460 police intercepter pistons from 73-74. They were even better. They were forged and had one large valve relief (like a CJ/SCJ). They also had a very slight dish that was only about .080" deep. I don't know why the manufacturers never made one similar. They are really nice. Unfortunately I have a nice set of 7 of them.
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
Big Un
(no login)
63.16.127.144 Try this
No score for this post November 1 2000, 12:42 AM
My brother is building an engine with KB pistons and had the same early block/low deck height issue. He bought the pistons and had the quench cut .020" to come up with zero deck. Cost him all of $35 for AMS to do it. Perfect set up. The fact of the matter is that the aftermarket produces in volume and some of those limited year, low deck deals just aren't going to be matched off the shelf. KBs are a very good solution.
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
Steve Pearson
(no login)
204.68.140.35 KB Pistons
No score for this post November 1 2000, 6:05 PM
Hey Big Un,
Which part number did he use? My original set is starting to get tired and I am beginning to get desparate. You can ask just so much from the original set of pistons. And I thought working on FE's was a pain...
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
Big Un
(no login)
63.23.54.54 That was a Windsor
No score for this post November 5 2000, 10:29 PM
My bro built a Windsor, but had the exact same issue with the KB pistons. The '69 block had a .020" lower deck height than the more common later blocks. KB said they only did pistons for the later stuff and if he used their pistons they would end up above deck. He bought the pistons, did a preliminary assembly, miked how far above deck they were, marked them and took them to the machine shop. They cut the quench (the cuts varied from .008" to .016") and ended up with exactly zero deck. $35. I would highly recommend doing the exact same thing. If you don't have free floating wrist pins, just have them all cut by the deck height differential. In his case this would have been .020", good luck. That is what I would do.
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
jack k
(no login)
152.163.197.183 TRW pistons
No score for this post November 5 2000, 10:06 AM
I built a 460 with the cj heads rods ect.. I also used a C9VE block that is suppose tohave the low deck height. i used a set of TRW 2404f. they have a 19cc cup, with 72 cc heads it should be about 9.67 to 1
Score 1 2 3 4 5 (5=Excellent) Edit Message Delete Message Lock Thread Respond to this message
460 TOM
(no login)
63.28.78.79 PISTON CHOICE..
No score for this post November 6 2000, 10:51 PM
STEVE , BUY THE KB P/N 138 HAVE THE .020 CUT OFF THE TOP THAT SHOULD LEAVE YOU WITH ABT 18CC CUP AND GIVE YOU A GREAT PISTON WITH ZERO DECK HEIGHT, TWENTY THOU OFF THE TOP WONT HURT A THING AS THE DOMES ARE PLENTY THICK ...IT'S FUNNY THAT A GUY WILL HAVE EVERYTHING ON HIS MOTOR MACHINED BUT IS ALWAYS FEARFUL OF CUTTING HIS PISTONS. MEASURE EVERYTHING DO THE MATH BUILD A GREAT MOTOR.
