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Need info on H-code 340 A-bodies
#876933
12/10/10 06:20 PM
12/10/10 06:20 PM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
OP
I Live Here
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OP
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Posts: 17,918
Akron, Ohio
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What is the deal with the H-code 340 A-bodies? I've been told they come with Kelsey Hayes 4 piston brakes, disc on the front and drums in the rear.
Some have 3.91 gears with a posi, high performance exhaust manifolds.
What else do they normally have? How much horsepower? Are they fairly rare? I'm looking at a 70 Dart model.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Need info on H-code 340 A-bodies
[Re: justinp61]
#876936
12/10/10 06:42 PM
12/10/10 06:42 PM
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Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms
Mr Wizzard
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Mr Wizzard
Joined: Jan 2003
Posts: 42,714
Spokane Washington
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Quote:
The H just means it's a 340 car, you could get whatever options you wanted with it. I had a 72 340 Duster, pretty basic car, manual drums all around bench seat, non rally dash, power steering, air conditioning, 3.55 open rear.
Yes, H does mean it's a 340 car, the 5th digit in the VIN only represents the engine the car was originally equipped with, however, disc brakes were not standard equipment on 340 cars after 1970.
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Re: Need info on H-code 340 A-bodies
[Re: ProSport]
#876937
12/10/10 07:16 PM
12/10/10 07:16 PM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
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OP
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Ok so the H-code just means it's a 340 and doesn't make it rare or anything.
What about the Kelsey Hayes disc brakes, did all 1970 340 cars come with the 'Kelsey' brakes? Are they anything special?
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Need info on H-code 340 A-bodies
[Re: ProSport]
#876939
12/10/10 07:26 PM
12/10/10 07:26 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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Quote:
Ok so the H-code just means it's a 340 and doesn't make it rare or anything.
What about the Kelsey Hayes disc brakes, did all 1970 340 cars come with the 'Kelsey' brakes? Are they anything special?
Yes, they came standard on 70 340 cars. my duster had them, they drag,i replaced them with race brakes long time ago.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Need info on H-code 340 A-bodies
[Re: B3422W5]
#876940
12/10/10 08:18 PM
12/10/10 08:18 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Did you save much weight, sorry to hijack prosport, only i've got KH discs on my 69 and may replace them for wilwood.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: Need info on H-code 340 A-bodies
[Re: deaks]
#876941
12/11/10 02:09 AM
12/11/10 02:09 AM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
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OP
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Akron, Ohio
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Quote:
Did you save much weight, sorry to hijack prosport, only i've got KH discs on my 69 and may replace them for wilwood.
Mick
No problem, just make sure the Wilwood fit your application as far as spindles and stuff. When I got my Dart the front wheels were sticking out past the fenders  , tires were getting shredded and everything. I switched to a different offset front wheel and the narrowest tire made, 26" Hoosier, and still had to trim the fender lip.
I've heard the Aerospace brakes are tucked under the car better. 
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Need info on H-code 340 A-bodies
[Re: 8secDart]
#876944
12/11/10 02:22 AM
12/11/10 02:22 AM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
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Akron, Ohio
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Quote:
No,73 back all had small bolt pattern.
Ouch, that just destroyed my wheel selection. 
So, what all is needed to convert the front disc brakes to 4.5" bolt pattern?
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Re: Need info on H-code 340 A-bodies
[Re: 8secDart]
#876945
12/11/10 02:26 AM
12/11/10 02:26 AM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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i own a 73 gold duster 6 cy has 4.5 bolt with disc factory bought 2 others both large bolt with disc sold one that was small drum up front all 340 cars  
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Re: Need info on H-code 340 A-bodies
[Re: dennismopar73]
#876947
12/11/10 02:41 AM
12/11/10 02:41 AM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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my 73 340 duster came with 4.5 bolt pattern ...disc in front..drum in rear...
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)
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Re: Need info on H-code 340 A-bodies
[Re: 8secDart]
#876948
12/11/10 02:46 AM
12/11/10 02:46 AM
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Joined: Dec 2004
Posts: 1,256
Salisbury North Carolina
8secDart
pro stock
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pro stock
Joined: Dec 2004
Posts: 1,256
Salisbury North Carolina
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Quote:
OK pre 73 is small bolt pattern.
All you need is the upper control arm, the spindle and brake parts.Not a big deal.
All the f-body stuff will work.Around here it is still easy to come by.I think I have 2 or 3 Dusters still at the shop with the stuff on them.Let me know if I can help.
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Re: Need info on H-code 340 A-bodies
[Re: ProSport]
#876951
12/11/10 11:47 AM
12/11/10 11:47 AM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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Quote:
Quote:
No,73 back all had small bolt pattern.
Ouch, that just destroyed my wheel selection.
So, what all is needed to convert the front disc brakes to 4.5" bolt pattern?
I originally just sent my stuff down to Moser and had them redrill to 4.5 bolt pattern, it was cheap and never an issue...ran the car like that for years before installing Aerospace brakes on it during that period when Vic had it.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Need info on H-code 340 A-bodies
[Re: Hot 340]
#876952
12/11/10 11:50 AM
12/11/10 11:50 AM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
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Akron, Ohio
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Quote:
I think Moser can convert the K-H rotor/hubs over to a 4.5 pattern.
I'll look into that.
Thanks for the info guys, and Lenny I'll get ahold of you if I need some brake parts.
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