Are Northstar engines 60*'s? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-01-2004, 11:57 AM   #1
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Default Are Northstar engines 60*'*?

I was asking.
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Old 02-01-2004, 12:01 PM   #2
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v8'* to be balanced properly should be 90*.... Our V6 'should' be 60* but that wouldn't be any fun now would it.
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Old 02-01-2004, 02:29 PM   #3
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My diagram of the 4.0L NS looks to be 90 degrees
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Old 02-01-2004, 02:44 PM   #4
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Quote:
Originally Posted by BonneMeMN
v8'* to be balanced properly should be 90*.... Our V6 'should' be 60* but that wouldn't be any fun now would it.
3800'* are 90, as far as I can remember.

... and from what I've heard, 60 degree sixes tend to be more balanced
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Old 02-01-2004, 03:59 PM   #5
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I tried looking it up. I didn't see anything.

I'm sure its 90.
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Old 02-01-2004, 05:49 PM   #6
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i'm pretty sure 3900 is chevy. No buick will need a 3.9L 60* DOHC V6.

I think abuot it this way. 360* (one revolution) divided by 4=90. So for a v8/I-4 that'* fine.

360/6=60*.

We're off so we have much more balancing.
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Old 02-02-2004, 01:13 AM   #7
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regarding the low end torque, arnt most 60* engines OHC?
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Old 02-02-2004, 02:40 AM   #8
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All GM 60* engines I know of up to this point are OHV only.
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Old 02-02-2004, 10:32 AM   #9
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Yes, 3100,3400,and 3800 are all OHV. The new 3500, or is it 3.5, that is going in the new G6 is supposed to be a DOHC I believe though.
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Old 02-02-2004, 12:49 PM   #10
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Quote:
Originally Posted by Allmachtige
All GM 60* engines I know of up to this point are OHV only.
Older DOHC in the cutlass supreme were DOHC.
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