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| | |-+  1969 original alternator.... 37 amp ??
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Author Topic: 1969 original alternator.... 37 amp ??  (Read 879 times)
DT
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« on: June 30, 2012, 09:21:03 AM »

What alternator (part #) came originally on a Big Block car??  37A or 61A Huh  Thx
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Donny
JohnZ
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« Reply #1 on: June 30, 2012, 09:43:11 AM »

What alternator (part #) came originally on a Big Block car??  37A or 61A Huh  Thx

1100834, 37 amp.
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'69 Z/28
Fathom Green
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DT
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« Reply #2 on: June 30, 2012, 10:36:37 AM »

Thank you very much John!
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Donny
william
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« Reply #3 on: June 30, 2012, 10:57:53 AM »

"Big Block" is a generic term.

The standard alternator for L34 [350 hp] and L35 [325 hp] was the 1100834.

Optional 42 amp [K79] was 1100842; 61 amp [K85] 1100849.

All special high performance BBs [L78, L72, ZL1] used 1100837 37 amp with the deep-groove pulley.
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DT
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« Reply #4 on: June 30, 2012, 11:59:57 AM »

Thank you William!
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Donny
mickeystoys69RSSS
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« Reply #5 on: June 30, 2012, 02:51:06 PM »

You also had to distinguish between A/C and Non-A/C big blocks for the L34 350HP and L35 325 HP cars. The standards 37A was used on non-A/C cars and the 42A alt was standard use for the A/C cars unless the 61A was also special ordered. The L78 cars did not have A/C as an option that I am aware of.
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