Need to fix the shift linkage, What to do? Looking for advice. Options

[phillstek]

I really want to fix the shift linkage once and for all (ha) and need help.

Box is tail shift and was rebuilt and many of the bushes have been replaced. I have solid mounts at box and sport mounts at front. Part of the reason I put the car away 11 years ago was the fact that the linkage required constant adjustment to get all ratios (4th/5th especially).

I am considering all options, including 915/G50 conversion if I have to.

All advice would be gratefully recieved.

Thanks,

Phil

[pcar916]

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There are several options and all of them include a side shifter regardless of your choice... and there are many choices. What's your budget?

Your most cost-effective option is likely another 914 solution. You can probably buy a side shift 914 transmission and either use it's parts to convert yours, or use the new box without changing anything except your shifter linkage, which must be modified or replaced. Whichever box has the best internals is the best one to use. The 915 conversion is another kettle of fish.

If you already have an early mag-case 915 with a 7:31 ring and pinion (R&P) and a four-cylinder car, then you just have to:

- run it upside-down, do a some mods and install a cable shifter. Or

- flip the R&P and use new shift rod parts and a $2000 Wevo tail shift or again... a cable shifter conversion. The true 915 side shifter parts are few and far between...

http://www.pbase.com/9146gt/916_racing_gearbox_2

very pricey when you can find them.

If it's a later 915 the flange-splines will be fine toothed and won't fit your 914 flanges, forces you to use a different axle setup. In addition the R&P is an 8:31 which will probably be a bit tall for your four-cylinder motor. Now if you have a big hp motor in your 914 then the bigger boxes may make sense.

A short bell-housing G-50 is nice as well but very heavy, expensive, and you'll still have a big ratio R&P to deal with. On top of that, figure in a cable shifter, new axles/CV's, a five lug conversion, and you'll for sure be running it upside-down since the R&P can't be flipped in that box.

In any of the above solutions calculate in $1800 to $2500 for a TBD or LSD diff.

Good Luck!