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67gto
New User
| Posts: 12
| Joined: 01/08
Posted: 02/26/08
01:30 PM
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Over 40 years ago I had a 1967 GTO with HO engine, Muncie M-21 Close ratio four-speed, 4.33:1 rear axle and F-70 x 14 Wide Oval tires - The MPH per 1000 rpm in high gear was 17.4 MPH
M-21 transmission ratio - 1st 2.20:1, 2nd 1.64:1, 3rd 1.48:1 and 4th 1.00:1
Question #1 - What was the MPH per 1000 rpm in first, second and third gear?
Added cheater slicks on rear (same height as 8.55 x 15 street tires)
Question #2 - With that change what was the MPH per 1000 rpm in high gear?
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67hogoat
New User
| Posts: 8
| Joined: 02/08
Posted: 02/27/08
06:21 AM
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I have a numbers matching 67 HO goat with 4.33, M21 and F70 X 14 bias tires, no slicks avail. When weather gets better I will find out MPH and advise.
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67gto
New User
| Posts: 12
| Joined: 01/08
Posted: 03/03/08
10:06 AM
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67hogoat
that sounds real good - hope the weathers clears soon - give description of your HO 67 - have a good day
67gto
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67hogoat
New User
| Posts: 8
| Joined: 02/08
Posted: 03/05/08
06:24 AM
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Google "1967 GTO school days" to view info on goat. Let me know what you think.
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cruzv64
New User
| Posts: 1
| Joined: 03/08
Posted: 03/05/08
07:47 AM
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The formula for your Goat try 336x4.33x1.00xmph/Divided by tire size will equal RPM. Example 336x4.33x1.00x60/divided by 28 inch tall tire equals 3117 RPM
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67gto
New User
| Posts: 12
| Joined: 01/08
Posted: 03/09/08
04:53 PM
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67hogto
is it the gold goat restored by students at Dauphin County Technical School?? - Cool
67gto
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67hogoat
New User
| Posts: 8
| Joined: 02/08
Posted: 03/10/08
11:01 AM
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Yeah, that's the car. I bought it on ebay.
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