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  #16 (permalink)  
Old 10-17-2011, 07:54 PM
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Slip Yoke Question...?

Can anyone give me some assistance with a slip yoke question?

My drive shaft is too short due to my transmission swapping escapades, but only by 3 inches. I figured I could run a longer slip yoke instead of buying another drive shaft. I'll need one with a 6 inch milled, 7.5-8 inches total. I know the 4 wheel guys do this to compensate for wheel travel. Will I have any problems doing this in a car?

Also, the older u-joint style (retaining clips on the inside) is a GM 3RL or S44...is that correct? I'm having a tough time finding this style with a longer shaft. Anyone know where I can get one?

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Last edited by Grease_Fever; 10-17-2011 at 07:56 PM. Reason: gramatical error
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  #17 (permalink)  
Old 10-19-2011, 06:44 PM
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No work done last couple nights. Work and school are priority.

Here's another question for the circle track guys. Who has used this shifter? (found on Speedway motors) Is there any stop between 1st and Reverse? How well does it work?
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  #18 (permalink)  
Old 10-22-2011, 10:59 AM
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Well, there's going to be delay in the project. We have a family medical emergency. Long story short...things are turning out okay. Thanks be to God!
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  #19 (permalink)  
Old 10-22-2011, 05:48 PM
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That Speedway shifter is strictly a circle track item, has to be taken out of one gear and put into the next, has no travel stops, no easy crossover from 2nd to 3rd gate, etc. Not a street shifter, or even a drag race shifter by any means. It is meant to be shifted carefully from lower gears to high gear and then left in high for the entire race.

Nothing that will ever work well on the street, it would be a real pain in the butt to use daily.
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  #20 (permalink)  
Old 10-22-2011, 06:21 PM
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Thanks for that info. I suspected as much, but I really appreciate you sharing that data.

Does remind me of a situation I had in high school. My first car was a 71 Chevy pickup long-bed with 3 on the tree. Well, the tree was messed up as many were/are. So, I ordered a floor shifter from JC Whitney. Well, they shipped it without the bracket that attached the shifter to the transmission! Back then, shipping was slow, especially for an impatient teen. So it was a couple weeks to get that part shipped to me.

So here I am with this thing basically torn apart. Of course I'm going to drive it anyway! All I had was the shift rods supported by a hanger (clothes hanger) bent into a u shape and pushed through the floor to support the shift rods. So, I would shift this truck by reaching through the hole in the floor and push/pull the shift rods into the correct gear. Of course I'm bent down, not looking at the road while this is going on!! Hopefully, I'm a little bit smarter today...
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  #21 (permalink)  
Old 10-26-2011, 06:22 PM
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We're back from the hospital and my son and I were able to start on the clutch master cylinder bracket.

Just some tedious work here; taking measurements from the hangar, transferring to the plate, cutting and drilling. We couldn't cut the hole for the brake master cylinder because my hole cutter was missing the set screw for the guide bit! Gonna have to make a trip to the hardware store...

One of my least favorite things is cutting and drilling metal. I instructed my son to start with small bits and work up to larger bits. Also, keep the bit oiled during the work. For the machinists out there, is this how you would do it? Any tips on drilling holes...?
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  #22 (permalink)  
Old 10-26-2011, 06:41 PM
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Quote:
Originally Posted by Grease_Fever
...
BTW, What is the Cheviac?
Same thing as a Pontrolet, only with a Chevrolet bias.
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  #23 (permalink)  
Old 10-28-2011, 08:30 PM
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Quote:
Originally Posted by 66GMC
Same thing as a Pontrolet, only with a Chevrolet bias.
Chevy in a Pontiac or Pontiac in a Chevy?

This is a good segway for me to explain my parts choices for this transmission swap. I bought an engine and transmission with TBI, computer, harness and accessories for a great price. It's a Chevy 305 out of 1995 Pickup. I've got the engine installed and running with a carb. I may or may not stay with the 305, but I was most interested in running the late model accessory set up and trying out my hand with the TBI some time here in the future.

I'm not using the 4L60E. But, I am capitalizing on parts for the 1995 Chevy 305. Plan on purchasing the flywheel, clutch assembly, master and slave cylinder, etc at the local parts store.

The next posts will show the clutch master I am using to mock up the firewall support plate.
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  #24 (permalink)  
Old 10-28-2011, 08:33 PM
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Drilling big holes in thick metal!

Which of these is the best way to go?
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  #25 (permalink)  
Old 10-29-2011, 12:49 PM
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"Which of these is the best way to go?"
I'd use the holesaw, carefully
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  #26 (permalink)  
Old 10-29-2011, 03:59 PM
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Thanks hpete...I used the hole saw this week on the MC bracket. I keep the oil flowing and the bit speed as slow as I can set the drill press. It seems to work okay.

I've used the step bit too. But, I think I ruined it on some .25 in steel. I've learned to listen to how the bit is responding to the metal and comparing to how it cuts.

But, I still need some more opinions/facts. Anyone else?... Fill me in on your expertise/knowledge/backyard know how...
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  #27 (permalink)  
Old 10-29-2011, 08:20 PM
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Quote:
Originally Posted by Grease_Fever
Chevy in a Pontiac or Pontiac in a Chevy?
Back in the day ...

Some of the local boys would put a '55 Chevy front end (from a 4=door?) on a '55 / '56 (Canadian) Pontiac ... and call it a "Cheviac".

I was kind of partial to the 55 Pontiac myself ... as that was my first car. Yes, I secretly wished it was a 55 Chevy.

I will say that the Pontiac "thermometer" - style speedometer was WAY cooler than the Chevy!

Mine had the "buzzin' half-dozen" (261 cu in 6-cyl) and an odd version of a powerglide that had reverse at the bottom. (as in PNDLR)

Yep, you wanted to be careful with that shift lever ... because it *would* go into reverse at pretty much any speed.



I found a picture of someone else that had one, too.
Look at the rear quarters ... they're Pontiac.

Picture comes from here

Last edited by 66GMC; 10-29-2011 at 08:32 PM.
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  #28 (permalink)  
Old 10-29-2011, 08:30 PM
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IMHO any swap to 3 pedals is a good one. Glad to see it.
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  #29 (permalink)  
Old 10-30-2011, 08:54 PM
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Swapping the front ends...that is the kind of ingenuity I love to see. That is the fun stuff.

Anyway, here we are with the pedals, brake MC and clutch MC. We used the mock firewall to place the clutch MC. Once we were happy with the fit, we transferred the hole dimensions to the bracket and hit the drill press one more time.

This is a tight fit, but I was able to use the lower right bolt hole for one of the clutch MC attaching points. This allowed me to keep it as high as possible on the pedal for the most mechanical advantage and still keep just enough space to attach the brake lines to the brake MC.

We'll trim down the bracket and take off the rough edges sometime this week.
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  #30 (permalink)  
Old 11-06-2011, 07:31 PM
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Back to it...

Made a spacer to create a little more space between the brake lines the clutch master cylinder bowl.

Also shimmed the pedals to get the push rods straight from the pedal.
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