What manual tranny are you runnig

[bigboi328]

Im trying to get a parts list together for my 65, and would like to run a 6spd trans, i wanted to what you have and any probloms you had with it

[TheDark1]

I used a TKO 5 speed. I don't remember any major problems, but it has been about 10 years or so since I put it in. I had to have my drive cut down. (Actually I just had a new one made instead). And the shifter is far back, but I have bucket seats, so that didn't matter. The only thing I'd look at is where the RPM's are going to be when you're on the highway. A 6speed is going to be pretty low in rpm range and these trucks aren't very aerodynamic. You don't want to be so low in RPM's that you can't cruise in 6th gear and still use the throttle to pass someone without having to downshift. And you don't want to be lugging the engine just to run in 6th.--Jeff

[TR65]

I am running a T56 6 spd. 2:1 overdrive in 6th makes for fine cruising. 70 mph at 1700 RPM (3.73 rear gear). As Dark1 mentions you do need some horses.

Difficulties: New crossmember needed, Need to modify e-brake gimikus, shifter is way back so I had to move it forward to use the bench seat. That is a big job - see this link.
http://67-72chevytrucks.com/vboard/s...d.php?t=300892

I used the hydraulic clutch that came with the tranny, so that was another job, see link on that.
http://67-72chevytrucks.com/vboard/s...d.php?t=300087

The PIC is before I got it painted and back on the road.

Was it all worth it? Oh yea.

TR

[slepysal]

urrrg cant open links !!

[TR65]

Whoops. Sorry, I messed up. Should work now.

TR

[GMR-PERFORMANCE]

why a six speed. the 5th to 6th split is not very far, I looked about buy the TKO 6 speed but after talking with a few that had it went with the TKO 600 5 speed. with a .64 over in 5th... The 6 speeds are good for road racing and things like that .. most said that they would just skip shift it as the 6 speed thing got old and was more shifting than needed... dont get me wrong 6 sounds good to me only passing on what I gathered.. My 5 speed is more than enough and many times I skip shift as well.. if I am being lazy

[GMR-PERFORMANCE]

just read through your swap, I ran a 413 stroker in a sand rail and used a Mefi computer and it is a 3 wire deal , your swap looks great I can see the time you put into it very nicely done!!!

The champion rad you bought what was the cost my stocker is still holding up well but have thought about upgrading as it is old .... no leaks yet but since I have it out might swap it.. does that company make one for a 62??

[TR65]

Thanks GMR,

He has 2 row and 3 row for a 62 ($150 , $200). My 3 row really cools good. The fans never come on unless I let it sit and idle for a while in SC summer heat.

http://stores.ebay.com/Christian-Rad...4.l1581&_pgn=2

TR

[bigboi328]

The reason for a 6spd is i travel about 40mi a day to work, so i thought a 6spd would get better mpg. As of right now i am getting parts together. I have a 72 350 4bolt that i would like to get 400hp---3.73 12 bolt rear end complete---now just looking for a trans. And if i can come up with some cash i found a guy selling a magna supercharger for $500

[NCD1966]

i would love to have a T56 but I am swapping over from a saginaw 3 speed to a Saginaw 3 speed w/ OD. Also will keep it on the tree.

[GMR-PERFORMANCE]

Originally Posted by bigboi328

The reason for a 6spd is i travel about 40mi a day to work, so i thought a 6spd would get better mpg. As of right now i am getting parts together. I have a 72 350 4bolt that i would like to get 400hp---3.73 12 bolt rear end complete---now just looking for a trans. And if i can come up with some cash i found a guy selling a magna supercharger for $500

My TKO has the option of a big OD I am running a .64 5th gear, My engine is stout so I do not know how a little engine would fare but it is shocking to see the RPM's drop by almost 50%... Just a thought I know that there are many ways to get there. Even a 4 speed ( 3 with a OD) would get the job done you need to look at rpm DROP in that od gear or in the 5th and 6th ratio.. I have driven the vetts with the 6th and really did not see the point in my own opinion. But each to there own.. I choose to buy a trans that was very strong and had the gear ratio that I could choose. The TKO 600 was the ticket..

I live in the mountains so we run the gears alot and this has been a dream to drive... You could get there with a t-5 as well...... If you go the 6 spped route post it up... nothing like being different.... I am installing a 7 speed trans in my harley.. 6 speed is stock so one more to go >>

[raycow]

I am running a T-5 and am very satisfied with the results. It was a cheap easy install, but I would not recommend a T-5 if you have a lot of power, sticky tires, and like to thrash it.

Ray

[jocko]

since you are planning on a 3.73 rear, I think you'll be good to go with a .64 o/d 5 speed (from the engine's perspective, especially since you're planning on about 400 hp). The 6-speed seems overkill, and the final ratio really isn't gonna get you much better mpg seeing as you'll be spending 20 of the 40 mile daily trip with the clutch in... (and you might start to see too low rpm at highway speeds unless you're spending much time over 75-80 mph)) I vote 5 speed! (at least that's what I'm saving my pennies for anyway). Good luck - and can't wait to see some build pics of the install....

[1/2Dozen]

Originally Posted by GMR-PERFORMANCE

I am installing a 7 speed trans in my harley.. 6 speed is stock so one more to go >>

is the 6 speed going to be collecting dust?

[bigboi328]

THANKS FOR ALL OF THE INFO. I TEEL YOU THIS SITE HAS HELPED ME TWICE. BUT I THINK I WILL GO WITH A 5SPD. ITS EASIER TO FIND AT THE SALVAGE YARD. AS SOON AS THE PARTS COME ILL POST PICS.

THANKS FOR ALL THE INFO

[TwoFiftyShifter]

Yeah to get good mpg with a carb'd V8, 1800rpms at 70 is the tallest I would go, as anything less is lugging it. Some guys with the 6 speed would actually get slightly better mileage in 5th gear.

Thats my next winter project for my 64, swap the 3 on the tree for a T5. That is, if I end up keeping the 6 banger in her...

[kirtzen]

Well I vote for a 4 speed. I run a saginaw 4 speed out of a 77 vega, and my rear is 3.73. At 70 it runs at 2400 rpms but has tons of power and still fun to drive. The swap was very easy. The original 4 speed bell housing bolts right to the Saginaw. The bellhousing basically is the mount, so no need for a new crossmember. I have a hurst shifter, and a bench seat. It took a little bit of modifying to mount the shifter to the tranny, but very little. It clears the seat with no issues.

[Captainfab]

You must have a 3.08 rear gear with rpm's that low at 70 mph.

Originally Posted by kirtzen

Well I vote for a 4 speed. I run a saginaw 4 speed out of a 77 vega, and my rear is 3.73. At 70 it runs at 2400 rpms but has tons of power and still fun to drive. The swap was very easy. The original 4 speed bell housing bolts right to the Saginaw. The bellhousing basically is the mount, so no need for a new crossmember. I have a hurst shifter, and a bench seat. It took a little bit of modifying to mount the shifter to the tranny, but very little. It clears the seat with no issues.

[bosephus]

TKO-600 5 speed is awesome.Shifter can be relocated(pricey,but can be done).It turns @2100 at about 70 mph with a 3.90 ratio and 27" tall tires.What little time I got to drive it before the teardown I had a blast!Pics show it with the mid shift relocation sitting beside a saginaw 4 speed,what a difference!Also,it wouldn't clear my low hump tranny cover.

[kirtzen]

Originally Posted by Captainfab

You must have a 3.08 rear gear with rpm's that low at 70 mph.

Well I'm sure its 3.73 rear. It could be my tire size making the difference. I don't remember what size they are. Ill check when I get home. I stuffed the tallest tires I could on it.
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[TwoFiftyShifter]

You would have about a 33" tall to get those rpms right?

[raycow]

I make it as being closer to 36.5"

Ray

[kirtzen]

Wow, bunch of ball busters. Ok I'll get technical and revise my statement. I went home drove my truck to 70mph it reads about 2550. I looked at the paperwork for my rear. Its a 10.5" 14 bolt corp with 3.42 gears. Sorry for the miss leading. 4th gear on a saginaw 4 speed is 1.00. tires 265/75/r16 by my tape measure shows they stand just shy of 31". So by my calculations my speedo is about 2 mph slow. So it's still not to bad, and fun to drive. Not to mention that those transmission are a dime a dozen. Easy, fun, and affordable. You can get a rebuilt one for $500 or less. The only other tranny in this price range is the T-5. T-5 can barely handle a mild 350. If you dont have deep pockets consider the 4 speed.

[GMR-PERFORMANCE]

I did move mine up to the front location and at the time it was 500 or so extra now you can buy the trans with shifter in the forward location. THe mid location is too close for how I wanted it. But it can be done that way. By the way I do have all the parts for the mid and rear location if someone needs them for what ever reason.

[Captainfab]

I wasn't trying to bust any balls. I just assumed you had a C10 with a shorter tire like say a 26-27" tall tire. My fault for assuming...sorry

So with that combo, do you have to slip the clutch much on take off?

Originally Posted by kirtzen

Wow, bunch of ball busters. Ok I'll get technical and revise my statement. I went home drove my truck to 70mph it reads about 2550. I looked at the paperwork for my rear. Its a 10.5" 14 bolt corp with 3.42 gears. Sorry for the miss leading. 4th gear on a saginaw 4 speed is 1.00. tires 265/75/r16 by my tape measure shows they stand just shy of 31". So by my calculations my speedo is about 2 mph slow. So it's still not to bad, and fun to drive. Not to mention that those transmission are a dime a dozen. Easy, fun, and affordable. You can get a rebuilt one for $500 or less. The only other tranny in this price range is the T-5. T-5 can barely handle a mild 350. If you dont have deep pockets consider the 4 speed.