The Ford Barn

AL in NY · 03-19-2023, 06:28 PM

I need to remove my F150 transmission to upgrade the gearset to the "Goldilocks" gears. I've been trying to figure out if it's easier to remove the engine or remove the rearend. I leaning towards removing the engine because there isn't much room behind the transmission with the brake cross shaft there. What say you??????????

shew01 · 03-19-2023, 07:00 PM

A Model A mechanic worked on mine a while back, and he chose to remove the rear end.

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old31 · 03-20-2023, 04:34 AM

I have done it both ways and find it easier to take out the rear end with my 150 trans.

Curious, what is the goldilocks gears?

rotorwrench · 03-20-2023, 06:13 AM

I think the "Goldilocks " reference is for the most favorable overdrive ratio to the model A.

AL in NY · 03-20-2023, 05:14 PM

The preferred gearset of the original Tremec RTS transmission was......1st=3.25. 2nd=1.92, 3rd=1.00, OD=.783(27.6%). The goldilocks gearset is derived from a 1978-79 RUG transmision which gives you a higher first and second gear ratio and still has the preferred 27% OD ratio.........1st=3.01, 2nd=1.78, 3rd=1.00 and OD=.787(26.99%)

rotorwrench · 03-21-2023, 11:32 AM

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Most vans used an automatic so finding a van with the SMOD RUG set up in that short 2-year range is not an easy task. It's eventually going to require some outfit with gear manufacturing experience to manufacture the described gears. They aren't making new ones down in Mexico anymore.

03-19-2023, 06:28 PM	#1
AL in NY Senior Member Join Date: May 2010 Location: Southern Upstate New York Posts: 1,160	F150 Trans removal I need to remove my F150 transmission to upgrade the gearset to the "Goldilocks" gears. I've been trying to figure out if it's easier to remove the engine or remove the rearend. I leaning towards removing the engine because there isn't much room behind the transmission with the brake cross shaft there. What say you?????????? __________________ AL in NY

03-19-2023, 07:00 PM	#2
shew01 Senior Member Join Date: Sep 2016 Location: Roanoke, VA USA Posts: 1,908	Re: F150 Trans removal A Model A mechanic worked on mine a while back, and he chose to remove the rear end. Sent from my iPhone using Tapatalk

03-20-2023, 04:34 AM	#3
old31 Senior Member Join Date: Jan 2016 Posts: 2,098	Re: F150 Trans removal I have done it both ways and find it easier to take out the rear end with my 150 trans. Curious, what is the goldilocks gears?

03-20-2023, 06:13 AM	#4
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: F150 Trans removal I think the "Goldilocks " reference is for the most favorable overdrive ratio to the model A.

03-20-2023, 05:14 PM	#5
AL in NY Senior Member Join Date: May 2010 Location: Southern Upstate New York Posts: 1,160	Re: F150 Trans removal The preferred gearset of the original Tremec RTS transmission was......1st=3.25. 2nd=1.92, 3rd=1.00, OD=.783(27.6%). The goldilocks gearset is derived from a 1978-79 RUG transmision which gives you a higher first and second gear ratio and still has the preferred 27% OD ratio.........1st=3.01, 2nd=1.78, 3rd=1.00 and OD=.787(26.99%) __________________ AL in NY

03-21-2023, 11:32 AM	#6
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: F150 Trans removal Sponsored Links (Register now to hide all advertisements) Most vans used an automatic so finding a van with the SMOD RUG set up in that short 2-year range is not an easy task. It's eventually going to require some outfit with gear manufacturing experience to manufacture the described gears. They aren't making new ones down in Mexico anymore.