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Oliver 77 Engine and Modifications


 
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TinkerPuller
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Joined: 01 May 2021
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PostPosted: Sat May 01, 2021 7:20 am    Post subject: Oliver 77 Engine and Modifications Reply to specific post Reply with quote

Hello all,

I am coming here in need of some advice. I have a 1949 Oliver 77 which I think was put together from parts long ago. I noticed when looking at another 77 my engine doesnt look like there, mainly the placement of the block drain petcock and the hour meter plate on the distributor housing.

Now I am no expert and used google to the best of my ability, and havent came up with a for sure answer.

The casting numbers on the left of the block are
Top: 185220B
Bottom: IM100B
Vertical above the starter: F32355

I been told its a Super 77 block, been told its a 770 block
Would like to know what it really is if someone can help.

From there I am wanting to know how big a piston I can run. I dont mind having to have the block bored for custom sleeves, and I dont mind having to Bush the rod for a automotive piston.
Just wanting to get as many cubes as I can without having a stroker crank made.

Any and all input would be appreciated.
 
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Craig Thompson
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PostPosted: Sat May 01, 2021 11:00 am    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote

I am sure someone can help you with block numbers, But it sounds like you do not have a super motor. I believe the late model fleet lines started having Tach drive/hour meter plate below distributor.

The biggest oversize bore is a 3.75. If you go any bigger you would need to machine the block for bigger bore. I don't believe there is a off the shelf automotive piston that has correct wrist pin height for stock stroke so if you do not want to stroke it you would need to have a custom piston made or use a tractor piston from a bigger Oliver that may work, that would be from the 88 block family (88/1650) etc.

If rules allow you would be best with replacing the block with a bigger block, 88, 320 block or 310 block.
 
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TinkerPuller
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PostPosted: Sat May 01, 2021 11:17 am    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote

I highly doubt the block is right for a 49. I am just wondering what I have. I dont mind having the block bored bigger for bigger sleeves, I just wanna know what options are as making bushings isnt a problem to run a smaller pin. If I can machine the block for 88 sleeves and pistons and run the rods I already have, I would be fine with that.

Also are these wet sleeve or dry sleeves? I would guess dry.
 
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chucksoliver77
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PostPosted: Sun May 02, 2021 1:24 pm    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote

If your lucky which I think you you have a super or newer block which should have 2 1/4" rod journal which can be offset ground to 2" giving you a 1/4" of stroke and use the rods from an early 77 engine. if you go with the 3 3/4" overbore kit an mill 1/8" off the top and your good to go. The head needs a lot of work (big valves and porting). you will have 265 cu.in.
 
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VicS
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PostPosted: Mon May 03, 2021 5:37 pm    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote

Before you spend money on your 77 block.
Find a 320 engine and spend your money on
it. But the Big Oliver's start with a 426
from a gen-set. All these engines are
Waukesha's which is what Oliver used. I
have some friends that have some 400cu. Or
so engines they might sell.
 
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showcrop
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Joined: 13 Dec 2000
Posts: 29953
Location: Chester NH

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PostPosted: Sun May 09, 2021 3:58 am    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote



Like Vic said you need to think realistically about what you are competing against. Stock pullers often have well over double stock horsepower.
 
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TinkerPuller
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PostPosted: Sun May 09, 2021 4:00 am    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote


Hey VicS, Ill see about sending you a message with my ph#
 
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TinkerPuller
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PostPosted: Sun May 09, 2021 4:01 am    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote


Wont let me pm you, if you can give me a call or text
304-377-5846
 
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VicS
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PostPosted: Tue May 11, 2021 1:20 pm    Post subject: Re: Oliver 77 Engine and Modifications Reply to specific post Reply with quote

I'll call you later tonight. Or tomorrow.
Can't now. But my no. Is 618 599 8041
 
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