mase
Member
would a 383 (currently in a '70 challenger),fit into a '74 duster without too much work? if any at all
383 duster?
- Thread starter mase
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efriedrich
69 383S
Lot of people use these guys.
http://www.engine-swaps.com
Also search the forum putting BB into A bodies, their is a lot of great info for ya in regards to transmission, radiator and other differences.
Welcome to FABO!!
http://www.engine-swaps.com
Also search the forum putting BB into A bodies, their is a lot of great info for ya in regards to transmission, radiator and other differences.
Welcome to FABO!!
Locomotion
Well-Known Member
Besides the adapter mounts available from the link given above, there are several other differences that may need to be addressed.
* Trans would have to come with the 383 or another big block because big block, small block and 6 cyl. transmissions all have different bellhousing bolt patterns and won't interchange. But the trans mounts are in the same place.
* If the Duster has a 904 trans, you'll need to get a driveshaft made up because a 727 (automatic big blocks only came with 727's) is longer than a 904 and would require a shorter driveshaft as well as the correct trans-end slip-spline yoke and driveshaft-to-rear end u-jount/yoke.
* Radiator inlet and outlet hoses are different between small and big blocks. It may also need a bigger radiator for proper cooling.
* Headers are a tight fit and a pain overall when you have a big block in an A-body. OEM exhaust manifolds may work but need to be double-checked.
* Gotta make sure that the brakes and suspension are good because of the extra weight and power from a big block. 6 cyl. brakes, suspension and 7 1/4 rear would not be a good idea for performance use/driving.
* Trans would have to come with the 383 or another big block because big block, small block and 6 cyl. transmissions all have different bellhousing bolt patterns and won't interchange. But the trans mounts are in the same place.
* If the Duster has a 904 trans, you'll need to get a driveshaft made up because a 727 (automatic big blocks only came with 727's) is longer than a 904 and would require a shorter driveshaft as well as the correct trans-end slip-spline yoke and driveshaft-to-rear end u-jount/yoke.
* Radiator inlet and outlet hoses are different between small and big blocks. It may also need a bigger radiator for proper cooling.
* Headers are a tight fit and a pain overall when you have a big block in an A-body. OEM exhaust manifolds may work but need to be double-checked.
* Gotta make sure that the brakes and suspension are good because of the extra weight and power from a big block. 6 cyl. brakes, suspension and 7 1/4 rear would not be a good idea for performance use/driving.
mase
Member
ok thanks for all the info. right now it has a 318, with a 727 and 9.25 rear end
Locomotion
Well-Known Member
That's good that it has a 318 and heavier suspension/brakes. If the rear is original, it is likely a 8 1/4.
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