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Which engine for a 1961 2 speed Auto Trans?

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notar61
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Which engine for a 1961 2 speed Auto Trans?

Post #1 by notar61 » Wed Dec 12, 2018 1:42 pm

Hello,

I have a 1961 Comet with a 2 speed automatic transmission that needs a new engine. It originally was mated to a 170 straight six, but I was thinking of finding a 200 straight six for it. Will any 60s model 200 work? Or do I need to be stick to certain years?

I know a guy that has a 200 out of a 66 Mustang that was mated to a 3-speed manual transmission, is it an option? I've read that Ford might of changed the 200 bolt pattern in 1966, so thought I would ask here to sure.

Thanks!

-Andrew

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powerband
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Location: Mid Hudson Valley - \H/

Re: Which engine for a 1961 2 speed Auto Trans?

Post #2 by powerband » Wed Dec 12, 2018 2:25 pm

'61 Comet - Fins !!! 8)


... @ '66 Ford added a large bellhouse pattern but kept the original 2Spd automatic bellhouse small pattern to use with later C4 automatic with 200 specific automatic bellhouse. The larger block pattern was needed for the larger Toploader 3 speed manual bellhouse with its larger clutch.

... so any later 170 or 200 like your friends' should be able to be used with your earlier 2 speed Fordomatic although you will be recommended to find a 3 speed C4 to go with later engine.

'76 Maverick 200 with small pattern C4 bell - larger block bellhouse pattern shows under head/above bell :
Image





have fun
"Take time to stop and smell... The roadkill..."

notar61
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Posts: 27
Joined: Thu Nov 29, 2018 1:48 pm

Re: Which engine for a 1961 2 speed Auto Trans?

Post #3 by notar61 » Wed Dec 12, 2018 5:48 pm

@powerband Thanks for the quick reply. I guess that old 200 our of my friend's 66 should work then!

I know the C4 is the better tranny, but right now my goal is getting the Comet back on the road ASAP. Maybe I can look at adding a C4 to it at a later time.

Thanks again!

-Andrew

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powerband
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Location: Mid Hudson Valley - \H/

Re: Which engine for a 1961 2 speed Auto Trans?

Post #4 by powerband » Wed Dec 12, 2018 6:46 pm

I'm not familiar with swapping automatics but I know there may be a few minor issues with generator brackets, carb linkage ...

have fun

Another 61 Comet - Great !!! , Hope some pics can show up
"Take time to stop and smell... The roadkill..."

notar61
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Posts: 27
Joined: Thu Nov 29, 2018 1:48 pm

Re: Which engine for a 1961 2 speed Auto Trans?

Post #5 by notar61 » Tue Jan 29, 2019 12:11 am

Would a 200 out of a 1968 Mustang also work with that old 2 speed automatic?

The deal with the 1966 engine fell thru.

I can post a picture of the bellhousing on the 2 speed automatic if that helps!

-Andrew

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B RON CO
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Re: Which engine for a 1961 2 speed Auto Trans?

Post #6 by B RON CO » Tue Jan 29, 2019 9:12 am

Hi, the tranny and flexplate will work, as far as I know, if the replacement engine is drilled for both bolt patterns as shown. If your replacement engine had a manual tranny you need to make sure the pilot bushing is removed, so the torque converter does not hit it.

Another thing to consider is later engines have a larger carb mounting area, and the old carbs don't bolt on. So unless you are ready to change out the original carb, measure the opening, or be ready to put your old head on the replacement engine.

Get the Ford Falcon Performance Handbook to learn more about the differences between the Ford 6 engines.
Good luck
B RON CO. Still workin' on it!

1933 Ford Pickup - 59A Flathead V8
1966 Ford Bronco - U14 - 170/200 Straight 6
1966 Ford Mustang - 289 V8

notar61
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Re: Which engine for a 1961 2 speed Auto Trans?

Post #7 by notar61 » Tue Jan 29, 2019 10:21 am

@B RON CO

Thanks for the reply and info!

I didn't know about the pilot bushing, so I will be sure to remove it as this 68 engine was originally mated to a 3 speed manual.

I have an intake manifold that will let me run a 2 barrel carb that I planned on putting on this engine. And I have a carb to go with it too!

Do you know if you can buy the Ford Six Performance handbook in PDF or digital format anywhere? I'd like to get my hands on it ASAP, so I can maybe 100% figure out if this engine will work or not.

Thanks again!

-Andrew

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B RON CO
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Re: Which engine for a 1961 2 speed Auto Trans?

Post #8 by B RON CO » Tue Jan 29, 2019 7:36 pm

Hi, get the Ford Falcon Performance Handbook from Vintage Inline on this site.
Don't be in a rush or you will be sorry.
The intake is integral with the head, one piece, so you cannot just swap intake manifolds.
Good luck
B RON CO. Still workin' on it!

1933 Ford Pickup - 59A Flathead V8
1966 Ford Bronco - U14 - 170/200 Straight 6
1966 Ford Mustang - 289 V8

notar61
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Posts: 27
Joined: Thu Nov 29, 2018 1:48 pm

Re: Which engine for a 1961 2 speed Auto Trans?

Post #9 by notar61 » Tue Feb 05, 2019 11:19 am

I'll go slow, I promise!

Thanks for the help and info!

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