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Old 05-16-2018, 01:28 PM   #1
6768chevylover
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re gear c10

Ive been running a 3.42 in my c10 for a few years now. I had a Muncie 4 speed and then upgraded to a tremec 500. They advertise the tremec 500 with using up to 3.42- higher and then the tremec 600 from 3.73-lower. I want to put a 3.73 in the rear to spin the wheels better and also for towing purposes.. does this sound like a bad idea?
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Old 05-16-2018, 03:55 PM   #2
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Re: re gear c10

6768chevylover

I am putting a tremec 500 in my 65 c10 with 3:73 gears. After talking to the transmission people at Silver Sport Transmission and using the calculator the 500 seems best suited for my 327 and tire size. I have not installed it yet did you have to modify the cab floor at all or did it fit ok?

Pat
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Old 05-16-2018, 04:45 PM   #3
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Re: re gear c10

Its close but it fits fine with no issues. Thanks for the info. I too bought from silver sport trans.. I prolly should of asked them myself, never thought of it. Thnaks
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Old 05-16-2018, 05:33 PM   #4
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Re: re gear c10

I like a mid 3,s gear....with that low 1st gear, I would try it....see how she does? With the Richmond & 4.10,s, she was really "jumpy" in town traffic! I would have to ask about tire height, as that does mess with the ratio longhorn
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Old 05-17-2018, 10:13 AM   #5
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Re: re gear c10

I have 28" tall tires. Based on rpm calculators that I mess with, it seems okay.. I have the gears already. Bought them a while ago but that was for a different project.
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Old 05-17-2018, 01:11 PM   #6
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Re: re gear c10

6768chevylover

Hey I had a question on the tremec 500 install. How hard was it to align the bell housing to their specificatios of 0.005? Dis you have to by additional bell housing stubs?

Pat
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Old 05-21-2018, 10:01 AM   #7
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Re: re gear c10

Macdaddy
I put that into consideration but never did the whole spec thing. I just used my original bell housing and stabbed it in. It seems to be fine. I have about 10000 mile on it now.
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Old 05-21-2018, 10:18 AM   #8
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Re: re gear c10

Thanks for your response. What did you decide to do with the rear end gears?
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Old 05-21-2018, 02:53 PM   #9
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Re: re gear c10

I think im gonna do the 3.73. Worse comes to worse I go back to the 3.42 if I think its to much. What tire size are you running?
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Old 05-21-2018, 11:23 PM   #10
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Re: re gear c10

Right now the tires are 265 75 R15 but I plan on installing disc brakes and changing the wheel bolt pattern to 5 x 5 and running a 16 or 17 inch rim. I haven't quite decided yet. What size are you running?
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Old 05-22-2018, 09:47 AM   #11
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Re: re gear c10

28" (265/60/15)tall tire tires. I haven't gone the discs in the rear yet but thats in the near future. Eventually I'll contact Captainfab for some brackets.
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Old 05-22-2018, 10:23 AM   #12
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Re: re gear c10

I also wanted to ask are you running the original clutch set up or hydraulic set up. It looks like the original set up on mine might interfere with the headers..
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Old 05-29-2018, 04:05 PM   #13
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Re: re gear c10

All original clutch linkage and set up.. no issue at all..
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Old 05-29-2018, 04:55 PM   #14
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Re: re gear c10

Are you running headers. How did you fit the Z bracket around the exhaust manifold?
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Old 05-29-2018, 11:44 PM   #15
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Re: re gear c10

I believe the OP has a '67-'72 which has a little different clutch linkage than the '63-'65. If your engine is in the correct factory location for a small block and you have either the Hedman 69260, 69090 or Hooker 2452's, your original clutch linkage including the bellcrank will work. The 69260's are made for the '55-'72 trucks and give you the most room for the clutch linkage

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Are you running headers. How did you fit the Z bracket around the exhaust manifold?
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Old 05-30-2018, 08:57 AM   #16
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Re: re gear c10

Captainfab

I have read on other posts from you that the C20/C30 engine perches fit nicely on our trucks. Would those perches give any more room for headers and clutch linkage. If so do you have any for sale?
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Old 05-30-2018, 09:00 AM   #17
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Re: re gear c10

Oh I almost forgot my 327 has a cracked block so I am swapping over to a LS 5.3 and fitting it with my TKO 500. Will those headman headers fit the LS engine?
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Old 05-30-2018, 09:29 AM   #18
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Re: re gear c10

small block headers won't fit a LS engine.....
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Old 05-30-2018, 10:09 AM   #19
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Re: re gear c10

Ok thanks. Which headers do you think fit the est for the z bar to have space?
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Old 05-31-2018, 12:14 AM   #20
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Re: re gear c10

The LS engines do not have a place for the ballstud for the bellcrank to pivot on. All LS engines with manual transmissions had a hydraulic clutch. I do make a hydraulic clutch conversion for the '63-'66 trucks. No I do not have any '73-'87 C20/30 engine mounts for sale.

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Ok thanks. Which headers do you think fit the est for the z bar to have space?
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Old 05-31-2018, 09:29 AM   #21
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Re: re gear c10

Captinfab

I took mongocanfly's advice and bought an advanced adapter bracket for the ball stud. It bolts onto the bellhousing. I am trying to keep the original linkage if I can. If it does not work out I will PM you for the hydraulic set up.

Thanks for all of your responses.
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