The Ford Barn

Newc · 04-11-2019, 08:42 PM

Hi all; This is for your entertainment.. I couldn't resist it, and we'll see what becomes of it. Thickstun Dual Pat. Pend Pm-7 and stamped MP...It has an 8 degree carb base slant and the original pattern was apparently modified for this result... MARINE ???? Photos Newc

deuce_roadster · 04-11-2019, 11:41 PM

HI Dale, if it is marine, you could mill some carb insulators to make it level and plug and re-tap the stud holes if you wanted to use it on a car. Or find a boat guy. Is that for an 85 or a 60?

34PKUP · 04-12-2019, 03:00 AM

Most likely marine. With studs perpendicular to base seems to indicate that it was marine specific and not modified from something else.
Those automotive manifolds with a tilt are appox. 4 degrees.
Making a wedge to level it is not the way to go.

skidmarks · 04-12-2019, 06:27 AM

Looks more like a hi rise pm7 that was cut down to use on a boat.

gavinnz · 04-12-2019, 06:40 AM

8 degrees is not a lot... so I suspect it was for a larger longer boat where that angle can be achieved. My old speedboat is only 16 feet long and am looking at an drive line angle around 12 to 15 degrees. Nice item!

Tim Ayers · 04-12-2019, 07:07 AM

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Quote:

Originally Posted by skidmarks

Looks more like a hi rise pm7 that was cut down to use on a boat.

Yes. There is this belief that Thickstun made both a high rise and low rise
PM-7.

While anything is possible, I've never seen any old advertisement showing this option.

Many PM-7's were cut down for hood clearance or, in the case, to be used in a boat.

Very cool piece. I noticed there seems to be a piece that is screw into the back carb base. I wonder if that part broke off during machining and they had to cap it.

rotorwrench · 04-13-2019, 10:22 AM

Tommy Thickstun died pretty young so his stuff was taken over by those that were still around. His PM-7 design was a high rise set up so any shorty versions would have been cut downs. They could angle it any way they wanted to as a cut down.

There is some belief that the later manifolds with "MP" casting were a matched port change that was made after Vic Edelbrock's matched port design was successful.
https://www.jalopyjournal.com/forum/...n-pm-7.949419/

Newc · 04-13-2019, 12:21 PM

Thanks all; The 'repair' with two screws is for the internal balance passage between the carb throats.
It does seem that the pattern was modified to get this unit, rather than a 'cut down' after production. Anyway fun to look at. Newc

04-11-2019, 11:41 PM	#2
deuce_roadster Senior Member Join Date: Oct 2011 Location: Shelton, WA Posts: 3,806	Re: Odd Thickstun find- Portland Swap HI Dale, if it is marine, you could mill some carb insulators to make it level and plug and re-tap the stud holes if you wanted to use it on a car. Or find a boat guy. Is that for an 85 or a 60?

04-12-2019, 03:00 AM	#3
34PKUP Senior Member Join Date: Feb 2011 Posts: 794	Re: Odd Thickstun find- Portland Swap Most likely marine. With studs perpendicular to base seems to indicate that it was marine specific and not modified from something else. Those automotive manifolds with a tilt are appox. 4 degrees. Making a wedge to level it is not the way to go. Last edited by 34PKUP; 04-12-2019 at 03:07 AM.

04-12-2019, 06:27 AM	#4
skidmarks Senior Member Join Date: Aug 2010 Location: newark, delaware Posts: 3,735	Re: Odd Thickstun find- Portland Swap Looks more like a hi rise pm7 that was cut down to use on a boat.

04-12-2019, 06:40 AM	#5
gavinnz Senior Member Join Date: Feb 2019 Location: New Zealand Posts: 208	Re: Odd Thickstun find- Portland Swap 8 degrees is not a lot... so I suspect it was for a larger longer boat where that angle can be achieved. My old speedboat is only 16 feet long and am looking at an drive line angle around 12 to 15 degrees. Nice item!

04-13-2019, 10:22 AM	#7
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,467	Re: Odd Thickstun find- Portland Swap Tommy Thickstun died pretty young so his stuff was taken over by those that were still around. His PM-7 design was a high rise set up so any shorty versions would have been cut downs. They could angle it any way they wanted to as a cut down. There is some belief that the later manifolds with "MP" casting were a matched port change that was made after Vic Edelbrock's matched port design was successful. https://www.jalopyjournal.com/forum/...n-pm-7.949419/

04-13-2019, 12:21 PM	#8
Newc Senior Member Join Date: May 2010 Posts: 2,507	Re: Odd Thickstun find- Portland Swap Thanks all; The 'repair' with two screws is for the internal balance passage between the carb throats. It does seem that the pattern was modified to get this unit, rather than a 'cut down' after production. Anyway fun to look at. Newc