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Old 07-16-2009, 12:12 AM   #1 (permalink)
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1971 400 engine help!!!!

ihave a 71 roadrunner, it has a 71 400 block in it (casting number 9-8-71, 3614230-1) my hood reads 383, and my vin number says it came with a 383, i was wondering if they came out with 400 blocks as an option later?? any info would be appreciated!
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Old 07-16-2009, 06:19 AM   #2 (permalink)
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72 was the first year for the 400. Sounds like someone installed new engine, but the 400 is a very good motor and lots of parts available to build them - stroker kits!.
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Old 07-16-2009, 06:38 AM   #3 (permalink)
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3614230 is indeed the 400. This casting # was produced in 71 & 72 and is a B block.
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Old 07-16-2009, 04:27 PM   #4 (permalink)
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the casting number means the date it was casted
if it says 71, the block was probably first used in a car in 72 or 73
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Old 07-16-2009, 11:33 PM   #5 (permalink)
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To add to the above, the 400 is in the same engine family as the 383. IIRC, it goes 350, 361, 383, 400. Then the RB engine ( Raised Block...taller deck hight ) was the 413, 426 wedge and 440. Depending on what you want out of your car, the 400 might just be perfect for you.

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Old 07-17-2009, 08:43 PM   #6 (permalink)
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what are your plans?
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Old 07-17-2009, 08:43 PM
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