The Ford Barn

19Fordy · 10-29-2012, 04:38 PM

Did FORD make any manual transmissions that had a 27 tooth cluster gear? I looked in the BIG GREEN BOOK and none are listed.

What year make and model FORDs used the 28 tooth cluster gear with the part # 48-7113? The BIG GREEN BOOK shows part # 48-7113A, but not 48-7113.

Thank you.

Fred A · 10-29-2012, 05:41 PM

That's probably because the green book coverage ends in 1948. Have had gearsets based on this but may have been open drive and later profile teeth. Wild guess, ask a guy with a '55 Thunderbird. Unfortunately Such questions don't get much play because it ranges beyond the common stuff. As for the '35 style cluster, seems like few people use those older gears cause they are harder to rebuild than the 1939+ gearsets with the improved synchros. Often found in a bucket full of gears, ten bucks or free at the end of the day. No cue the informing mob! Good Luck: Fred A

rotorwrench · 10-29-2012, 05:49 PM

The two most common were the 15/29 (input/cluster) and the 16/28 for passenger cars and commercials. the 16/28 with the 3.78:1 rear axle were the most common.

svm99 · 10-29-2012, 06:01 PM

The 27T cluster came in the early 50's in the F1 type open drive line transmissions. Do not attempt to mix them with the earlier gears, you will have problems.

That said, the complete 27T gearset will fit in the earlier sideshift cases, I'm not sure of the gears being able to be used with the 91A "wide fork" though.

Paul J.

satelite · 10-30-2012, 09:16 AM

Ask Mac Van Pelt. He is the most knowledgable on trany's. Nice guy also.
Don in SC

miwi · 10-30-2012, 10:00 AM

Sponsored Links (Register now to hide all advertisements)

According to Mac'S Transmission book Cluster Gear 1A-7113A has 27-23-17-13 teeth. It was used '51 - '54 in passenger cars and '48 - '51 in trucks. It works with Main dirve gear 1C-7017, 2nd speed gear 1A-7102A, 1st speed 1A-7100A

rotorwrench · 10-30-2012, 05:40 PM

FoMoCo redesigned the transmissions for 1951. The tooth profile looks more diamond shape that the early type gears. No intermixing can be done with earlier stuff as was already mentioned. The inputs were usually 1-inch 10 spline. A far cry from the 1 3/8 inch 10-spline of the earlier types. They use different clutches with the 1 inch 10-spline main drive gear.

19Fordy · 11-01-2012, 09:59 PM

Thank you gentleman for your helpful info.. It is appreciated.

Terry,OH · 11-02-2012, 06:02 AM

I believe 48-7113-A and 48-7113 are the same cluster 28-24(both helix)-18-15(both straight) with the 28 tooth gear being 0.727 wide, I believe they use the B-7129 rear thrust washer with five tabs.

10-29-2012, 04:38 PM	#1
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,919	Cluster Gear Questions Did FORD make any manual transmissions that had a 27 tooth cluster gear? I looked in the BIG GREEN BOOK and none are listed. What year make and model FORDs used the 28 tooth cluster gear with the part # 48-7113? The BIG GREEN BOOK shows part # 48-7113A, but not 48-7113. Thank you.

10-29-2012, 05:41 PM	#2
Fred A Senior Member Join Date: May 2010 Location: Encino California, near Burbank Posts: 935	Re: Cluster Gear Questions That's probably because the green book coverage ends in 1948. Have had gearsets based on this but may have been open drive and later profile teeth. Wild guess, ask a guy with a '55 Thunderbird. Unfortunately Such questions don't get much play because it ranges beyond the common stuff. As for the '35 style cluster, seems like few people use those older gears cause they are harder to rebuild than the 1939+ gearsets with the improved synchros. Often found in a bucket full of gears, ten bucks or free at the end of the day. No cue the informing mob! Good Luck: Fred A

10-29-2012, 05:49 PM	#3
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,420	Re: Cluster Gear Questions The two most common were the 15/29 (input/cluster) and the 16/28 for passenger cars and commercials. the 16/28 with the 3.78:1 rear axle were the most common. Last edited by rotorwrench; 10-30-2012 at 08:43 AM.

10-29-2012, 06:01 PM	#4
svm99 Senior Member Join Date: May 2010 Location: Garlic Country of CA Posts: 537	Re: Cluster Gear Questions The 27T cluster came in the early 50's in the F1 type open drive line transmissions. Do not attempt to mix them with the earlier gears, you will have problems. That said, the complete 27T gearset will fit in the earlier sideshift cases, I'm not sure of the gears being able to be used with the 91A "wide fork" though. Paul J.

10-30-2012, 09:16 AM	#5
satelite Senior Member Join Date: May 2010 Location: Greenville, SC Posts: 145	Re: Cluster Gear Questions Ask Mac Van Pelt. He is the most knowledgable on trany's. Nice guy also. Don in SC

10-30-2012, 10:00 AM	#6
miwi Member Join Date: May 2011 Posts: 76	Re: Cluster Gear Questions Sponsored Links (Register now to hide all advertisements) According to Mac'S Transmission book Cluster Gear 1A-7113A has 27-23-17-13 teeth. It was used '51 - '54 in passenger cars and '48 - '51 in trucks. It works with Main dirve gear 1C-7017, 2nd speed gear 1A-7102A, 1st speed 1A-7100A

10-30-2012, 05:40 PM	#7
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,420	Re: Cluster Gear Questions FoMoCo redesigned the transmissions for 1951. The tooth profile looks more diamond shape that the early type gears. No intermixing can be done with earlier stuff as was already mentioned. The inputs were usually 1-inch 10 spline. A far cry from the 1 3/8 inch 10-spline of the earlier types. They use different clutches with the 1 inch 10-spline main drive gear. Last edited by rotorwrench; 10-30-2012 at 05:47 PM.

11-01-2012, 09:59 PM	#8
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,919	Re: Cluster Gear Questions Thank you gentleman for your helpful info.. It is appreciated.

11-02-2012, 06:02 AM	#9
Terry,OH Senior Member Join Date: May 2010 Posts: 4,743	Re: Cluster Gear Questions I believe 48-7113-A and 48-7113 are the same cluster 28-24(both helix)-18-15(both straight) with the 28 tooth gear being 0.727 wide, I believe they use the B-7129 rear thrust washer with five tabs.

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