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73-87chevytrucks.com
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Topic: gears (Read 2540 times)
78GMC
Guest
gears
«
on:
August 13, 2001, 09:45:00 PM »
I'm wondering if someone knows what the gear ratio is in a 78 GMC Sierra Grande, as well as the shift pattern from top to bottom for the transfer case. I just have a goofy picture with four wheels, no 2H/4h...nuthin.
Thanks.
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84Scotts
Guest
Re:Gears
«
Reply #1 on:
August 14, 2001, 01:52:00 AM »
The gear ratio of your '78 will depend on if its a 1/2, 3/4, or 1 ton. Also, what engine and transmission did the truck come with? The ratio will depend on this info, too.
The shift pattern from top to bottom for the four wheel drive should be: 2 Hi, 4 Hi, Neutral, and 4 Lo.
Go to
members.aol.com/CSmith669...specs.html
and it will tell you your axle ratio.
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high rider
Guest
gears
«
Reply #2 on:
August 29, 2001, 09:34:00 PM »
the best way to check your gear ratio is too pull the rear cover off and divide the next too the last too numbers on the ring gear.that will come out too be 308- 343-373-or 411 these are the most common gear ratios in a stock truck. your 4x4 shifter should be as follows-- starting from all the way forward with the shifter 4L-N-2H-4H see ya, hope this helps
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78GMC
Guest
gears
«
Reply #3 on:
October 12, 2001, 07:56:00 PM »
Thanks for the input and information.
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cooter61
Guest
full time
«
Reply #4 on:
October 14, 2001, 09:26:00 AM »
Well that goofy shift pattern that just shows you the wheels, tells me that its a Full Time 4WD and the shift Pattern I think would be 4WHigh , 4WH Lock, N , 4WLow Lock.
The 4WHLock and N maybe turned around and the pattern would start at the top.
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85 k30 502ss
Newbie
Posts: 10
Re: full time
«
Reply #5 on:
December 24, 2001, 09:45:00 PM »
sounds like a 203, they go from seat forward
4hi lock, 4hi, neutral, 4low, 4low lock
Edited by:
85 k30 502ss
at: 12/25/01 3:47:02 am
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1979blazer
Newbie
Posts: 27
yep thats the pattern
«
Reply #6 on:
January 06, 2002, 07:16:00 PM »
yep thats it
Edited by:
1979blazer
at: 4/21/04 11:42 pm
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walnut
Newbie
Posts: 4
Re: gears
«
Reply #7 on:
July 31, 2002, 08:59:00 PM »
i have a 78 chevy silverado and my shifter pattern is 2whi at the top then 4whi, neutral, and 4 lo
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73-87 Chevy _ GMC Trucks
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