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Just picked up a 71 formula clone. I cant really see the codes on the rear of the engine block to determine the build date. It is a WD engine with a motor unit number of 808271. Any ideas what the block could be without knowing the date code, I was told the block was original but from what I can find on the WD code it isnt. Thanks for the help.
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Forgot to mention the engine has the transfer lug. -
The transfer lug is a good thing. That means the block went down another separate line for extra machining. My 1969 428 4 bolt main engine block has it.
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Here is the available block numbers for a Pontiac V8 with a "WD" code stamped into the block. Just get the casting numbers off the back of the block by the distributer hole.
WD B-body 69 400 290 3-speed 1x2 9790071 2 int seat 45 WD A-body 74 350 170 3-speed L-30 N 1x2 488986 2 low comp WD B-body 65 389 276 Manual 1x4 9778789 2 low comp WD F-body 73 350 175 3-speed L-30 N 1x2 488986 2 low comp WD F-body 72 455 300 4-speed LS-5 X 1x4 485428 4 Ram Air WD A-body 68 350 265 3-speed L-30 1x2 9790079 2 WD B-body 67 400 333 4-speed L-67 1x4 9786133 2 WD B-body 70 400 290 Turbo 400 L-65 1x2 9799914 Comment
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Thanks for the help guys!Comment
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Did you figure it out? Now you got me curious about which you have!
Please share when you find out.Comment
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I am guessing a 73 350. I am basing that on the heads that are from a 73 350. Couldnt get the date code off the rear of the engine.Comment
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