jhite
Well-Known Member
Ok does a k-member have a # stamped on it and if so were is it and what should it be for a 69 roadrunner 383 car
part numbers
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The part number isn't stamped in the k-member, on certain years a "coin" was welded to the k-member with the last two digits of the part number.This article might be helpful ......A-Body conversions
This is verbatim from the Mopar 1973 race bulletin#28 MOPAR Engine swap manual - page 2,3,4
We will begin with the A-body conversion. The A-body engine compartment was widened in 1967 making the '67-73 A-Bodies more desirable for big engine swaps. The 273 V8 engine was introduced into an A-Body in 1964. Therefore any '64-66 A-Body can be mated to a 273 or 318 V-8 by using the '64-66 A-Body 273 engine brackets, insulators and "K" member. This 273 or 318 swap is a bolt in operation. The 340 or 360 engine will fit quite easily by using the 273 mounts with a modified left side bracket (see page 19). The '64-66 engine compartment is too small for the B engine. We do not recommend this installation because of the difficulty in overcoming the engine interference with the shock towers and the steering. Rather, we would recommend a member of the "A" engine family for a 1966 or earlier "A" Body engine swap.
The 1967-73 A-Body had a variety of engine sizes available in production including the 383 in '67-68-69 and the 440 in '69. These cars, therefore, make the best base for an engine swap. If the car was originally a 6 cylinder, a new K-member, 2 brackets and 2 insulators are all that is required to install virtually any engine. All A-engines will use the same basic "K" member, but the actual part number of the "K" member will differ from year to year. For instance, if a '68-69 A engine "K" member PN-2883980 is used in '71-72 A-Body, problems with the front sway bar will be encountered. Try to use the "K" member that goes with the car if at all possible. All A engine '67-72 A-Body insulators are the same - (two) PN-2806779. The '67 273-318 brackets are PN-22843224 and PN-2843223. The '68-72 273-318 brackets are PN-2863443 and PN-2843223. The '68-72 340-360 needs a new left bracket PN-28663445 but uses the same right bracket PN-2863443. With these parts, any A engine swap is a bolt-in operation. This means that the 318 can be easily bolted in place of the 273 by using the 273 pieces. The 360 can also be easily bolted in by using the 340 pieces. The brackets in either case are determined by the engine used.
The B-engine can be swapped into the A-Body by changing the "K" member, brackets and insulators. The B-engine brackets PN-2465862 and PN-2536132 and the insulators PN-2536121 and PN-2465861 were the same for all three years('67-69) that they were produced. The '68-69 "K" member PN-2883999 should be used in the newer '70-72 A-Bodies although some front sway bar problems may be encountered. The RB engine can be swapped into the A-Body by using the same conversion pieces as the B engine. Exhaust manifold clearances get very close with the 440.
Any '67-72 A-Body can have a 383 or 440 engine installed by simply using the 383 pieces. If the car came with a 383 engine, then the 440 bolts in. If the 383 or 440 is installed in the A-Body, the heavy-duty torsion bars PN-2535894-5 are required to compensate for the increase engine weight.
With the increased performance offered by the B engine, better brakes should be considered, such as disc brakes. Properly adjusted drum brakes can be used with new linings and the wheel cylinders and master cylinder in good condition.
The "73 mounts are of special interest since the bracket and insulator are one piece. This change requires that the "73 motor mounts be used with the '73 "K" member and '72 and earlier mounts must be used with '72 and earlier "K" member. The '72 and earlier "K" members fit the '73 "A" bodies so the '67-69 383 "K" member can be used to install the "B" engine into a '73 A-body. Some sway bar interference may be encountered.
A-Body "K" members
Year 6 Cyl. 273-318-340 V8 383 V8 383 V8 w/P.S.
'64-66 2260609 (1)
'67 2768375 2768548 2881925
'68 2883982 2883980 2883984 2883999
'69 2883982 2883980 2883999
'70 2962082 2925976 NP
'71-72 3583062 3583064 NP
'73 3466466 3466468 NP
(1) V8 used same "K" member as 6 cyl.
NP Not Produced
A-Body Engine Brackets
year 6 Cyl 273-318 V8 340 V8 383 V8
64-66 2264668 2465378
2265023 2465379
67 2532278 2843223 2465862
2806841 2843224 2536132
68-69 2532278 2863443 2863443 2465862
2806841 2843224 2863445 2536132
70-72 2532278 2863443 2863443 NP
2806841 2843224 2863445
73(1) see insulators (1) A body uses a one piece bracket and insulator
A-Body Insulators
year 6 cyl 273-318 V8 340 V8 383 V8
64-66 2264140 2465508(two)
2265018
67 2806844 2806779(two) 2536121
2806842 2465861
68-72 2806844 2806779(two) 2806779(2) 2536121
2806842 2465861
73 3642820 3642810 3642810 NP
3642821 3642811 3642813
*******MORE TO FOLLOW*******
*******transmissions and bell housings*******
This is verbatim from the Mopar 1973 race bulletin#28 MOPAR Engine swap manual - page 2,3,4
We will begin with the A-body conversion. The A-body engine compartment was widened in 1967 making the '67-73 A-Bodies more desirable for big engine swaps. The 273 V8 engine was introduced into an A-Body in 1964. Therefore any '64-66 A-Body can be mated to a 273 or 318 V-8 by using the '64-66 A-Body 273 engine brackets, insulators and "K" member. This 273 or 318 swap is a bolt in operation. The 340 or 360 engine will fit quite easily by using the 273 mounts with a modified left side bracket (see page 19). The '64-66 engine compartment is too small for the B engine. We do not recommend this installation because of the difficulty in overcoming the engine interference with the shock towers and the steering. Rather, we would recommend a member of the "A" engine family for a 1966 or earlier "A" Body engine swap.
The 1967-73 A-Body had a variety of engine sizes available in production including the 383 in '67-68-69 and the 440 in '69. These cars, therefore, make the best base for an engine swap. If the car was originally a 6 cylinder, a new K-member, 2 brackets and 2 insulators are all that is required to install virtually any engine. All A-engines will use the same basic "K" member, but the actual part number of the "K" member will differ from year to year. For instance, if a '68-69 A engine "K" member PN-2883980 is used in '71-72 A-Body, problems with the front sway bar will be encountered. Try to use the "K" member that goes with the car if at all possible. All A engine '67-72 A-Body insulators are the same - (two) PN-2806779. The '67 273-318 brackets are PN-22843224 and PN-2843223. The '68-72 273-318 brackets are PN-2863443 and PN-2843223. The '68-72 340-360 needs a new left bracket PN-28663445 but uses the same right bracket PN-2863443. With these parts, any A engine swap is a bolt-in operation. This means that the 318 can be easily bolted in place of the 273 by using the 273 pieces. The 360 can also be easily bolted in by using the 340 pieces. The brackets in either case are determined by the engine used.
The B-engine can be swapped into the A-Body by changing the "K" member, brackets and insulators. The B-engine brackets PN-2465862 and PN-2536132 and the insulators PN-2536121 and PN-2465861 were the same for all three years('67-69) that they were produced. The '68-69 "K" member PN-2883999 should be used in the newer '70-72 A-Bodies although some front sway bar problems may be encountered. The RB engine can be swapped into the A-Body by using the same conversion pieces as the B engine. Exhaust manifold clearances get very close with the 440.
Any '67-72 A-Body can have a 383 or 440 engine installed by simply using the 383 pieces. If the car came with a 383 engine, then the 440 bolts in. If the 383 or 440 is installed in the A-Body, the heavy-duty torsion bars PN-2535894-5 are required to compensate for the increase engine weight.
With the increased performance offered by the B engine, better brakes should be considered, such as disc brakes. Properly adjusted drum brakes can be used with new linings and the wheel cylinders and master cylinder in good condition.
The "73 mounts are of special interest since the bracket and insulator are one piece. This change requires that the "73 motor mounts be used with the '73 "K" member and '72 and earlier mounts must be used with '72 and earlier "K" member. The '72 and earlier "K" members fit the '73 "A" bodies so the '67-69 383 "K" member can be used to install the "B" engine into a '73 A-body. Some sway bar interference may be encountered.
A-Body "K" members
Year 6 Cyl. 273-318-340 V8 383 V8 383 V8 w/P.S.
'64-66 2260609 (1)
'67 2768375 2768548 2881925
'68 2883982 2883980 2883984 2883999
'69 2883982 2883980 2883999
'70 2962082 2925976 NP
'71-72 3583062 3583064 NP
'73 3466466 3466468 NP
(1) V8 used same "K" member as 6 cyl.
NP Not Produced
A-Body Engine Brackets
year 6 Cyl 273-318 V8 340 V8 383 V8
64-66 2264668 2465378
2265023 2465379
67 2532278 2843223 2465862
2806841 2843224 2536132
68-69 2532278 2863443 2863443 2465862
2806841 2843224 2863445 2536132
70-72 2532278 2863443 2863443 NP
2806841 2843224 2863445
73(1) see insulators (1) A body uses a one piece bracket and insulator
A-Body Insulators
year 6 cyl 273-318 V8 340 V8 383 V8
64-66 2264140 2465508(two)
2265018
67 2806844 2806779(two) 2536121
2806842 2465861
68-72 2806844 2806779(two) 2806779(2) 2536121
2806842 2465861
73 3642820 3642810 3642810 NP
3642821 3642811 3642813
*******MORE TO FOLLOW*******
*******transmissions and bell housings*******
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detmatt1
Well-Known Member
Good artical there. Not sure if this applies to all of them but there is also a date code on the front right in the center, it faces forward so you could read it if you get on your belly. Stamped lightly on mine from the "JUNKYAR DOG" but after a good cleaning with a wire brush I could read it. I know that was kind of off topic but I found it interesting when I was doing research on the car without a fender tag or build sheet or drivetrain. Was able to determine if it was an early or late built car.
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