Author Topic: 1969 original alternator.... 37 amp ??  (Read 950 times)

DT

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1969 original alternator.... 37 amp ??
« on: June 30, 2012, 02:21:03 PM »
What alternator (part #) came originally on a Big Block car??  37A or 61A ???  Thx
Donny

JohnZ

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Re: 1969 original alternator.... 37 amp ??
« Reply #1 on: June 30, 2012, 02:43:11 PM »
What alternator (part #) came originally on a Big Block car??  37A or 61A ???  Thx

1100834, 37 amp.
'69 Z/28
Fathom Green
CRG

DT

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Re: 1969 original alternator.... 37 amp ??
« Reply #2 on: June 30, 2012, 03:36:37 PM »
Thank you very much John!
Donny

william

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Re: 1969 original alternator.... 37 amp ??
« Reply #3 on: June 30, 2012, 03:57:53 PM »
"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.

DT

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Re: 1969 original alternator.... 37 amp ??
« Reply #4 on: June 30, 2012, 04:59:57 PM »
Thank you William!
Donny

mickeystoys69RSSS

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Re: 1969 original alternator.... 37 amp ??
« Reply #5 on: June 30, 2012, 07:51:06 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.