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#1
01-11-2021, 08:04 PM
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HD 3spd?
Did pontiac offer both the Muncie cast iron 3spd and the Dearborn 3spd in the 66 gto? I am thinking the PHS only calls out the "HD 3spd" but not the brand.
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__________________
68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
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#2
01-11-2021, 08:58 PM
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AFAIK Dearborn trans was optional from mid 65 to 67. Required if you wanted a console or floor shift.
Standard equipment on 68-69 models as a floor shift only.
__________________
Ed 1968 GTO (Thanks Mom) 2006 Silverado 2007 Cadillac SRX 2015 Chevy Express  
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#3
01-11-2021, 09:28 PM
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I believe the Dearborn was standard, Muncie 4 spd. and 2 speed automatic were options in '66.
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#4
01-11-2021, 09:50 PM
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Since I don't know for sure I double-checked my copy of the GTO/GT-37 Illustrated ID guide.
A fully synchronized Saginaw M11 in 66/67 was standard, column shift only. Dearborn optional. The 2nd/3rd gear synchronized Muncie M12 was used in 64/65. Dearborn was optional from March '65
__________________
Ed 1968 GTO (Thanks Mom) 2006 Silverado 2007 Cadillac SRX 2015 Chevy Express
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#5
01-11-2021, 09:56 PM
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Great info, thanks
Sent from my SM-G965U using Tapatalk
__________________
68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
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#6
01-11-2021, 10:07 PM
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3 spd HpD was standard IF you got the floor shift. Muncie 3 spd was only available if you got the column shift; I've only seen one and heard of 1 more in over 40 years dealing with GTO's.
__________________
LEAD, FOLLOW, OR GET THE HE!! OUT OF THE WAY!!! HONEST JERRY'S SPEED AND EQUIPMENT
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