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#51
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Carleen, agreed Reynolds prototype for GM. I have worked with and documented 21 variations of the GM aluminum blocks.
The 0-326711 you mentioned is definitely Can Am only. I have seen none with provisions for a mechanical fuel pump and agreed that mold was 68 only. It is also 4.440 bore and does have sleeves. Who did you hear the production run number from ? That is interesting, I have never heard a definitive count other than from Bill Jenkins and Smokey Yunick who both state 70 short blocks cast between 67-69. This is Reynolds casting, not Winters. Different block, yes, even those that share the identical mold numbers: 3946052 and 3946053. The Reynolds and Winters were cast from different alloys. However, GM did turnover casting 052, 053 and 040 to Winters for '70 and '71 with big bore molds for Can Am teams. If your into the Can Am stuff we should compare notes. A small group of us here in the USA that work on these are comparing notes to combine all this data and get it to those who restore these engines. |
#52
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I have one of the 0-326711 Blocks.
I heard that Chevrolet ordered 20 Blocks (minimum order) of all 0-blocks. Its the third Prototype / Eperimental casting of CanAm Big Block They were supposed to be scrapped after trying them out but came out the back door to Racers. WDC Casting. BTW Mine have provision for fuelpump. Last edited by Carleen; 10-01-2020 at 06:48 PM. |
The Following User Says Thank You to Carleen For This Useful Post: | ||
PeteLeathersac (09-19-2023) |
#53
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I have seen some 3946052 Can Am Block on ebay with Casting date early 69. Also bought one of these but got into trouble with the seller
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#54
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Heres what I have found out.
And I thought WDC means Winter die casting Can-Am blocks 68/69 - Winters # 0-294550 = 4.250" bore with steel liners Experimental Prototype 67-68 Dry sump (427 ci) # 0-321270 = 4.440" bore with steel liners Experimental Prototype 68 no boss for mechanical fuel pump(430, 465 ci) # 0-326711 = 4.440" bore with steel liners Experimental Prototype 68 (430, 465 ci) # 3946052 = 4.440" bore with steel liners (430, 465 ci) # 3946053 = 4.440" bore with steel liners (430, 465 ci) Can-Am Block 70 Winters # 3946052 = 4.440" bore with steel liners (494 ci) # 3946053 = 4.440" bore with steel liners (494 ci) Can-Am blocks 71-72 - Reynolds # O-399204 = 4.5" bore and steel liners (509 ci) # O-495102 = 4.5" bore and no liners ZL-1 Factory blocks - 1969 - Winters # 3946052 427 ci. # 3946053 427 ci ZL-1 Factory blocks - 1997 & up # 3946053 427 ci. # 3992038 may be 4.44" bore w/ Liners - era?. # 3946052 Yenko Casting LC 427 # 3946053 Yenko - Casting has YENKO # 3946053 Yenko - Casting has Y E N K O # 394605Y Yenko - Casting has Yenko Crest Logo |
#55
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I still have some parts from the Can Am engine from Jenkins. If you need something give me a call. Thanks Joe 908-216-5614
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#56
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