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#1
12-06-2020, 07:14 PM
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67-68 400 crank?
9773524 67-68 400 crank.any better than a 4813?
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1977 Trans Am,400 4 speed,numbers matching car  1979 Bonneville ,1 owner car...  1997 Trans Am convertible,LT1/auto. |
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#2
12-06-2020, 07:50 PM
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Nope
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It is easier to fool a man than it is to convince he has been fooled |
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#3
12-07-2020, 07:17 AM
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If your building a motor that will need to get balanced then try to track down a 65 or 66 389 Armasteel Crank.
They have the needed Crank snout lenght to be used in a 400 motor.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#4
12-07-2020, 08:44 AM
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67-68 400 crank?
FYI....ONLY the 1966 389 Cranks have the long nose....the 65's will have a short nose....Both are Arma Steal as stated...the 1966 long nose version is what they used for the RAII and IV cranks but with the original cast # ground off and new part # hand stamped in its place.
RA |
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#5
12-07-2020, 08:47 AM
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67-68 400 crank?
Sorry...meant to write ArmaSTEEL....For some messed up reason I have the word "Steal" on my mind lately...
RA |
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#6
12-07-2020, 09:24 AM
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http://www.pontiacpower.org/PontiacCranks.htm
https://sites.google.com/site/kensau...asting-numbers FWIW |
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#7
12-07-2020, 10:41 AM
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Well I don't know about that info because I used the 1965 389 Crank out of my own B body car to build a 400 that used the 400 balancer and timing cover!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#8
12-07-2020, 05:09 PM
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No issues since info says all 1963 (exc. 1963 421) and later cranks has a 3.00" snout.
Btw, 400 engines uses both the early 1963-67 damper and the 1968 and later damper depending on year and corresponding timing cover. |
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#9
12-08-2020, 12:00 PM
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400 crank
I know couple stock eliminator racers, they told me that the 350 crank was a bit lighter than the 400, but I'm not sure if this is true.
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#10
12-08-2020, 01:12 PM
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That's only help full if your running lighter then stock Rods and Pistons where you would be taking weight out of the Crank during a balance job anyway!
I have never looked at , or A/ B the diameter of the counter weights between a 350 and a 389 or 400 crank, but if they where of a smaller OD then that would certainly make for a reduction in hp loss due to windage if nothing else.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#11
12-08-2020, 11:27 PM
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I have a 66 326 crank that is 770 casting but it has an N cast into it. So is it Nodular or Armasteel crank.
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#12
12-08-2020, 11:45 PM
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Quote:
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Buzzards gotta eat... same as worms. |
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#13
12-09-2020, 07:07 AM
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That 326 N Crank is a good one also, and I would not hesitate to use it in any build of a 3.750" stroke motor if it passes a Mag test and rings out nice when tapped on lightly when tilted on a 45 degree angle off its flange and you hold the top of the Crank by the balancer bolt that's in a few threads.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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