‘65 a body 833 vs. say, e body
#2446579
02/04/18 11:33 PM
02/04/18 11:33 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
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OP
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Kentucky
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My son just acquired a ‘65 a body with an A833 in it. The questions are this: 1. What are the physical and performance differences between it and perhaps an e body 833? 2. Can it be built to take significantly more power than the 273 is putting to it?
I’m sure we’re in for an education on this build. It’s going to be a challenge to get it to where he envisions it.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: ‘65 a body 833 vs. say, e body
[Re: dfsmopars]
#2446588
02/04/18 11:54 PM
02/04/18 11:54 PM
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Joined: Jan 2003
Posts: 27,444 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
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Posts: 27,444
So Cal
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It's Abody length with Abody length tailshaft, shifter location, and mainshaft.
The 65 and earlier trans' have a ball and trunion output flange.
The trans itself is not really significantly weaker than other 23 spline trans. Will take and warmed 273 or 340 or 360....
The ball and trunion is what people don't like about them.
Read the ID guide on the Brewers website.
Last edited by autoxcuda; 02/04/18 11:56 PM.
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Re: ‘65 a body 833 vs. say, e body
[Re: dfsmopars]
#2446632
02/05/18 01:46 AM
02/05/18 01:46 AM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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That tranny could be one of the early 3.09 first gear trannys You can mark and align the input shaft and mark the front bearing retainer and then mark the flange on the output shaft and output shaft cover and put it in first gear and rotate the input shaft exactly one full complete revolution while counting the flange revolutions, it will either rotate a little over 2.6 revolutions or a little over 3.1 revolutions The reason I bring this up is the lower first gear ratio allows you to run a higher speed rear gear without bogging in first gear BTW, what does he want the car to become?
Last edited by Cab_Burge; 02/05/18 01:47 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: ‘65 a body 833 vs. say, e body
[Re: dfsmopars]
#2446756
02/05/18 12:10 PM
02/05/18 12:10 PM
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Joined: Dec 2004
Posts: 10,550 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
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Posts: 10,550
Rittman Ohio
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A light small block A body will be OK with the 23 spline box Like Cab said it probably has a 3.09 first gear so 3.23 or 3.55 rear gears would be a nice cruiser with some goo mechanical advantage down low. This ramps up the fun factor and the clutch disc will also thank you for it Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: ‘65 a body 833 vs. say, e body
[Re: dfsmopars]
#2446778
02/05/18 12:39 PM
02/05/18 12:39 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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Posts: 14,889
up yours
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Speedometer pinion hole in the tail shaft is smaller and unique to the early setup and pinion availability sux.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: ‘65 a body 833 vs. say, e body
[Re: Cab_Burge]
#2446802
02/05/18 01:11 PM
02/05/18 01:11 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
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OP
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BTW, what does he want the car to become?
Road course competitor.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: ‘65 a body 833 vs. say, e body
[Re: dfsmopars]
#2446898
02/05/18 03:39 PM
02/05/18 03:39 PM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Is he going to stick with the 273 or put in a bigger SB? The reason I'm asking is the RPM drop between each gear on the wide ratio trannys may not help that little motor on a road course You should convert the tail shaft and output shaft to the later type that you can use a conventional slip yoke and U joint on that end of the driveshaft The E body tranny have a completely different longer tail shaft and out put shaft designed for the E body shifter mount The 1970 AAR Cuda and T/A Challenger and all the 1971 and later OEM 833NP trans. had a closer ratio gear set in them which may be better for road racing
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: ‘65 a body 833 vs. say, e body
[Re: dfsmopars]
#2446935
02/05/18 04:41 PM
02/05/18 04:41 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Posts: 14,889
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I suggest you go over to the cornering section and talk to them about using that A833 for road racing.
The straight line guys that predominate here won't know.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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