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Old 05-22-2015, 09:54 AM   #1
blublaz71
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Location: Lompoc California
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3 speed floor shift

I have an 71 Blazer 307/3speed standard shift . Has anyone done a 3speed floor conversion if so where on the tunnel does the shifter come through.Is it on the corner or on the flat of the tunnel . Just preparing myself if I have to make a table to sit the boot on
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Old 05-22-2015, 10:26 AM   #2
1rippen6
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Location: Greencastle PA
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Re: 3 speed floor shift

Quote:
Originally Posted by blublaz71 View Post
I have an 71 Blazer 307/3speed standard shift . Has anyone done a 3speed floor conversion if so where on the tunnel does the shifter come through.Is it on the corner or on the flat of the tunnel . Just preparing myself if I have to make a table to sit the boot on
I don't know about CA. but you can find 4 speeds pretty reasonable around my area in u-pull it yards. I have had trucks with the 3 speed conversion and are not that fun to drive once they get some wear on them. If you do decide to go that route spend the extra money on a nice setup hopefully it will last longer.
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Old 05-22-2015, 10:28 AM   #3
MikeB
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Re: 3 speed floor shift

I suggest you buy the shifter, then mount it without the handle to determine where the floorboard cut-out needs to be. Then drill a hole from the bottom where the shifter would come through in neutral. Open up that hole from the top just enough to let the handle poke through, and then enlarge a little at a time. On the last one I did, my floorboard hole ending up being only around 2" wide and 4"-5" long. It's easier to make the hole larger than smaller.

Here's the only 3-speed shifter I would use:

http://www.hurst-shifters.com/produc...n-and-pick-up/

And here's a thread about the installation in a 64 truck, but it may give you an idea of where it mounts relative to the transmission centerline.

http://67-72chevytrucks.com/vboard/s...d.php?t=408144

Whatever you use, be sure to use the truck version with a taller handle.
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1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
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Old 05-22-2015, 01:31 PM   #4
notsolo
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Re: 3 speed floor shift

On My 2wd Blazer conversion. I went with a 3 speed Saginaw, floor shifter out of a 69-Nova/Camaro. Center of shifter is 30" off the drivers door, 27" forward of the floor bump-up to the rear.
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