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07-13-2019, 11:35 AM | #1 |
Junior Member
Join Date: Jun 2017
Posts: 23
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Ford 8BA engine placement
Hi - I recently purchased a 1927 Ford touring with a model A boxed frame, 8BA flathead motor, 1953 mercury 3 speed, and 1932 (?) rear end. The rear end has been converted to open drive. I have no drive shaft at this time. I'm about to take off the body and redo / improve some aspects of the suspension and drive train. What I am trying to find out is what angle is correct for a Ford flathead. I realize on a closed drive setup it is all fixed between the different engine components, but with the open drive should I set the engine so it is going down 2 or 3 degrees towards the rear end and then rotate rear end up towards engine / trans. Right now the engine is sitting flat. Thanks, Brian
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07-13-2019, 12:08 PM | #2 |
Senior Member
Join Date: Jan 2011
Location: sw minnesota
Posts: 4,573
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Re: Ford 8BA engine placement
cant give you anything scientific, but as a general rule for motor swaps i like to try and put the crankshaft back where it was originally. the hand crank hole on the front spring pad would be in line with the bolt on the front of the crank for a model A, and the trans shift housing usually is about an inch to an inch ana half above the floor of a v8 car, thus requiring the hump in the tin cover for the floor. your model T had a flat floor, so you will be making that part
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07-13-2019, 12:54 PM | #3 |
Senior Member
Join Date: Jul 2014
Location: Iowa
Posts: 1,634
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Re: Ford 8BA engine placement
Most engine swaps are concerned with clearance between the frame and cross members, as well as the hood. Unless the engine is placed at an odd angle, the oil pan will compensate. If you have to modify the oil pan fo clearance, be sure that the capacity is at least equal to the stock part. Last year we built an engine for a four wheel drive pickup the owner intended to use pull heavy grain wagons out of the field. It worked fine, except when on a steep grade when the oil shifted away from the pump pickup. We ordered a large capacity oil pan from Jeg's that holds seven quarts, and all is well now.
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07-13-2019, 04:21 PM | #4 |
Senior Member
Join Date: Nov 2011
Location: NW Arkansas
Posts: 524
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Re: Ford 8BA engine placement
When I installed a T5 trans in my F1 I had to build a new rear cross member. I set my engine at 3 degrees which let the carb sit level. The rear end was factory 3 degrees up. The drive shaft is 7 degrees. Been working great for years.
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07-13-2019, 06:12 PM | #5 |
Senior Member
Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
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Re: Ford 8BA engine placement
If your intake manifold has the built in angle to keep the carb. level, then use that angle to set the engine angle when the carb is level.
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07-13-2019, 06:54 PM | #6 |
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Join Date: Jun 2017
Posts: 23
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Re: Ford 8BA engine placement
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07-14-2019, 04:18 PM | #7 |
Senior Member
Join Date: May 2010
Location: Granger (Northern) Indiana
Posts: 1,520
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Re: Ford 8BA engine placement
You want the carb(s) close to level, and this depends on what flathead intake you use, early or late. But the most important items are 1, engine/trans and pinion centerlines being parallel, and 2, keeping the U-joint working angles the same and between 1 and 3 degrees. This really requires establishing chassis ride heights early in the build.
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