The Ford Barn

Krylon32 · 10-19-2018, 03:11 PM

Does the back of the 42 pickup 6 cylinder have the same trans bolt pattern as the V8? Is the 42 pickup drive line open or closed? I assume it's an F1

rotorwrench · 10-19-2018, 03:40 PM

There is a flywheel housing that is bolted to the back of the engine block. They had one for the 3-speed and one for the 4-speed. If they had a 3-speed, they used the same transmission case as a V8 Commercial. They also used the same clutch (10-inch for 3-speed). The 1942 models were the first year for open drive on the commercials.

The F-series were bonus built starting in 1948. The pickups prior to that were just commercial models with various weight ratings, transmissions, and rear axle combinations.

Krylon32 · 10-19-2018, 04:55 PM

I need to find out if it's a 3 or 4 speed? Customer wants to put one of my T5 conversions in his PU. I've done them with a later 6 but never a 42 so I'm in the dark. Don't want to sell him something that doesn't work?

42merc · 10-19-2018, 07:25 PM

Passenger car 'G' series 6 cylinder trans ('41 thru '46) used a unique bell hsg & trans case.
'H' series 6 cyl, '47 & later used the normal V8 pattern. I can't comment on the early 6 cyl truck bolt patterns.

rotorwrench · 10-20-2018, 10:30 AM

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The truck rear housing (4-speed) is set up for an 11-inch clutch assembly. As far as I know, the T9 transmission set up (4-speed) used the same hogs head adapter at the later trucks up into the 50s but I'd have to confirm that. The H model 6 bell housings were different than the V8. They were flat on the bottom and had different bolt hole arrangement than the V8 stuff but were very similar. My info comes from the green bible chassis parts book for the early G series info. I have other books for the H model six as used in cars & pickups after 1947 model year and they are different than the G model 6.

I don't know if there are casting numbers on the rear housings but a 21C would be 3-speed with 10-inch clutch and a 21T would be for a 4-speed with 11-inch clutch. The passenger car stuff is likely different in the G model era due to the open drive on the commercials.

10-19-2018, 03:11 PM	#1
Krylon32 Senior Member Join Date: May 2010 Posts: 4,509	42 pickup Does the back of the 42 pickup 6 cylinder have the same trans bolt pattern as the V8? Is the 42 pickup drive line open or closed? I assume it's an F1

10-19-2018, 03:40 PM	#2
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,462	Re: 42 pickup There is a flywheel housing that is bolted to the back of the engine block. They had one for the 3-speed and one for the 4-speed. If they had a 3-speed, they used the same transmission case as a V8 Commercial. They also used the same clutch (10-inch for 3-speed). The 1942 models were the first year for open drive on the commercials. The F-series were bonus built starting in 1948. The pickups prior to that were just commercial models with various weight ratings, transmissions, and rear axle combinations. Last edited by rotorwrench; 10-19-2018 at 03:56 PM.

10-19-2018, 04:55 PM	#3
Krylon32 Senior Member Join Date: May 2010 Posts: 4,509	Re: 42 pickup I need to find out if it's a 3 or 4 speed? Customer wants to put one of my T5 conversions in his PU. I've done them with a later 6 but never a 42 so I'm in the dark. Don't want to sell him something that doesn't work? Last edited by Krylon32; 10-19-2018 at 06:07 PM.

10-19-2018, 07:25 PM	#4
42merc Senior Member Join Date: Feb 2011 Location: Buchanan, MI Posts: 676	Re: 42 pickup Passenger car 'G' series 6 cylinder trans ('41 thru '46) used a unique bell hsg & trans case. 'H' series 6 cyl, '47 & later used the normal V8 pattern. I can't comment on the early 6 cyl truck bolt patterns.

10-20-2018, 10:30 AM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,462	Re: 42 pickup Sponsored Links (Register now to hide all advertisements) The truck rear housing (4-speed) is set up for an 11-inch clutch assembly. As far as I know, the T9 transmission set up (4-speed) used the same hogs head adapter at the later trucks up into the 50s but I'd have to confirm that. The H model 6 bell housings were different than the V8. They were flat on the bottom and had different bolt hole arrangement than the V8 stuff but were very similar. My info comes from the green bible chassis parts book for the early G series info. I have other books for the H model six as used in cars & pickups after 1947 model year and they are different than the G model 6. I don't know if there are casting numbers on the rear housings but a 21C would be 3-speed with 10-inch clutch and a 21T would be for a 4-speed with 11-inch clutch. The passenger car stuff is likely different in the G model era due to the open drive on the commercials. Last edited by rotorwrench; 10-20-2018 at 10:39 AM.