Engine Swap
Fleet Mechanic
Joined: Jun 2004
Posts: 1,784
Likes: 45
From: Minnesota
Does anyone have the rear end gear specs? That would answer the question pretty fast you can use the rearend gearing, tire height and final drive ratio of the transmission to figure the RPM at various speeds.
Just thowing out ideas
Just thowing out ideas
- If the RPM is to high could an overdrive unit such as an AOD be used as a four speed automatic and actually use the overdrive portion as a gear?
- How about an overdrive unit from Gear Vendors probably a little expensive. Although the price of gas might make up for it.
- How about one of the newer transmissions from a 1 or 2 ton truck with overdrive?
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Junior User
Joined: Sep 2005
Posts: 77
Likes: 0
I just sold an F-3 with 6 cyl.The fellow I sold it to is making a street rod out of it and wants to sell the engine,gas tank and seat out of it.If you have a need for any of this stuff let me know. As for as the F-6 I am working on it may be a long wheelbase F-3 when I get through with it.
Hotshot
Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
There are plenty of calculators on the web where you can plug in the tire (not wheel) diameter or circumference, rear gear ratio(s) (unless you use an OD tranny high gear is 1:1) and either engine RPM or desired speed to get the other. For cruising down the highway at 55 (realistically, if you were to cruise the interstates at 55 you'd likely be a traffic hazzard with posted speeds of 60-70 and actual average right lane speeds +10, so I'd use 65 as target cruising speed) with reasonable gas milege, engine noise/wear and comfort you'd want the engine to be turning ~ 24-2800 RPM.
Cargo Master
Joined: Sep 2004
Posts: 2,906
Likes: 82
From: Oregon
Originally Posted by AXracer
F6!?!! Woah!
First thing I would do is sit down and decide what do I want to do with this big baby!
I don't suspect it is intended to be used as a daily driver or a street rod (although done right it could be, BIG rods is a growing trend), so what are your plans for it? What is the truck's condition?
I would expect that there weren't many/any engine swap adapters made for that tranny.
First thing I would do is sit down and decide what do I want to do with this big baby!
I don't suspect it is intended to be used as a daily driver or a street rod (although done right it could be, BIG rods is a growing trend), so what are your plans for it? What is the truck's condition?
I would expect that there weren't many/any engine swap adapters made for that tranny.
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Cargo Master
Joined: Sep 2004
Posts: 2,906
Likes: 82
From: Oregon
Oh yeah, I've got a 254 flathead six cylinder out of my '53 F-600, that I would sale with the matching tranny. I haven't had it running yet, but it looks to be in very ggod condition, and was running when parked a couple years ago.
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Junior User
Joined: Sep 2005
Posts: 77
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Well I found a guy today that has put a 400 Ford with a C-6 in a 56 Dodge 1 1/2 ton and runs great.I folled him up the road in my Focus at 65 MPH.So I don't think I will have any problems with my 51. Many thanks to all of you who have responded to my call for help.
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