Inner axles that twist and snap can be from overpower and abuse, common enough. It can also be from cheap imported axles sold for the past 20+ years. Rebuilt axles today have issues, new axles have issues. If you broke an axle you most likely need to address the internals of the diff as well to...
Hi
Yes I got your PM and responded. I am still building vette diffs in many configurations, including the 12 bolt.
If you do it yourself you will save $2500 or more on labor. There is a lot involved to do it right, I have pictures of those that cut corners in the build to sell for less then...
I had heat issues with my 69 years ago and had headers on at the time. I got a wrap from summit and that helped but I went over the wiring at the starter and found it had been spliced and had bad connections. I soldered the wires, cleaned up the area, installed the wrap and that worked. Prior to...
Antony,
As you know the parking brake is a basic setup, just upper/lower springs, hold down springs, and the lever/starwheel. If you bought a new SS kit and just installed it as it came out of the bag then you might have some drag. The new parts sold today are ok at best. EVERY new SS parking...
I can only guess the new ones haven't been corrected then, the ones I had and this goes back about 8 years or more, were clearly bad. The main shaft gears had issue too if I recall on the new ones I bought, but that brass tipped type would not engage without binding. I don't rebuild a lot of...
I have not rebuilt a tach drive distributor for several years now but the last two I did I found the quality of the new cross gears terrible- At BEST. These came with a brass button on the end and I was told I had file the button to set the gear lash, well that was total BS. I set it up in a...
I bought a cotton flannel indoor cover for my 72 about 35 years ago from Mid America. I have purchased others since for the other vettes but non are as good as this one. It lays on the car, no elastic needed, breathes and held up to animals walking over it. It is now starting to wear and rip at...
Yes the 76 steering column was a switch from the earlier ones. They came with the "Vega" steering wheels which wasn't as nice in my opinion as the earlier 3 spoke wheels. A lot of guys installed earlier columns and wheels. I don't recall the exact differences with the 76 column but you should be...
There is no drain plug as you know, although I tap one in the all the vette diff's I build.
You will need to get a suction gun and suck out the oil from the fill plug on the LH side. This is a square head 3/4" npt plug. Once you get it out, add 2 bottles of the current GM limited slip additive...
What trans do you have? I don't recall if I saw it but then I didn't go back through the info. 336's are good street gear. I moved up from 308 to 336's with my 325hp 350 with th400= little rpm difference in that jump. You will feel it more going from 273 to 336. If automatic it won't be a...
you're this deep into it now, I agree go with new gears. Word of advice use only TOM's gears and buy them direct from Tom. I would still check the case runout as well.
Did the diff have the cast iron shims in both sides or the kit steel stackable shims? How was the lash before you took it apart, in the 6-8 range? You can dial in a posi in a lathe but it was vary a little bit on the bearings in the housing. I am doing a 12 bolt conversion now for a 64 vette...
Good sign that no obvious impact spots but again there should be no binding. Sometimes I'll try to reach in and paint the mesh spot of binding and then check the teeth closely when removed. I use setup pinion bearings on job after job, they would be no good for actual use because one they are...
12 37 stamped on the face = 308 pinion. Look at the LH sidewall inside the housing for any gouging or hit marks. If you see any then the rg bolts backed out and sheared in the past. If a snap ring or broken metal chip ended up in the gear mesh it would either lock it up or grind it down and that...
There should be no binding. Since this diff has been apart before I would suspect there may be some concerns to look over. You know the pinion already hit the case, it might had caused a burr. I have found burrs on both new and used gears and they caused binding and rough rotation. Dress the...
No I use Seymours cast blast for diff top coats. I like the way it looks and sprays. Blast, Etch, Rinse, Flame dry, POR15, Cast blast. Tap the drain hole too.
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