69z28&ss396

For a 67 I would like to know what are the differences. Ive looked and all I could find were the axle stubs.. (caps vs U bolts) Does this mean essentially you can make a big block rear out of a small block with just a stub change?

Hitch

Yes

Velox

Well the tapped differential yokes with the bolt on caps is the obvious change, but there also ratio stamps on the differential that would be specific only for a big block car. These would be AT, AU, AZ, FA, FB and FC codes. So a 1967 big block 4:11 rear would have an FB code, but if you have a 1967 corvette 4:11 diff with an AP code, then it came out of a small block car

Hitch

Yes but that would not affect the performance which is what the OP is referencing..

69z28&ss396

IS that the only change? I dont care about numbers at all, its a tribute big block car for my late father.. 67 L71 coupe devils den color was his all time fav combo.. Im just slowly trying to aquire the hard to find parts..

69z28&ss396

Correct, and I have a soft spot for makers..

Nowhere Man

what is a devils den color combo? and any 65-79 rears are the same

69z28&ss396

Black with a red interior, and in this case a red stinger..

Nowhere Man

awe yes the most popular 67 BB color combo to be faked

69z28&ss396

Darn right it'll b a fake.. Im 29 and trying to play an old mans game.. Im a poor man and parts are NOT cheap..

Nowhere Man

I started to restore my 66 SS Chevelle when I was 20. you don't have to tell me I am playing in a old riches man game

69z28&ss396

At least you'll never see this one trying to be sold as a real one.. I know Ill have more money in it than its worth but I could care less about numbers, as long as it looks the part.. Keepin the GF happy is a hard bargain also.. Have one for me, and Ill do the same!!

65silververt

I found the FA stamped on the top of my fathers differential just yesterday. I thought they only stamped the differential codes on the stamp plate on the bottom, so i was surprised to find the F and the A clearly stamped into the top.

larrywalk

You don't even need to change the side yokes - both will connect to the same 1350 u-joints on the half shafts.

69z28&ss396

Its all in what you want i guess..

midstyle

Here's the top stamping off a carrier with an AU_2_28_67 bottom stamp [AU=BB 3.36 posi]; notice they ground a small area but almost missed it with the stamp. Not sure when this practice began or how long it lasted.



n

Hitch

Yep that and Jim Beam Black Label are good for sipping.

This question about the yokes if all that is different on the stub axles is how the u-joint is mounted what great benefit is it to change to the BB stub axles? Most of the failures that I have seen here and on the internet revolve around the half shaft failing not the stub axle.

I have seen what appears to be the trailing arm stub axle used as a differential stub and the half shaft have the same half shaft connection.

David

JohnZ

Theoretically, the bolted caps increase the torque capacity of the yoke vs. the U-bolts, but I don't know at what power level that becomes an issue; probably doesn't matter with stock tires.

Photo below shows what you may be talking about - Van Steel provided these flanged stub axles (and carbon fiber half-shafts) for the "King Ray" 572-powered '67 the late Jerry Clark built as a project car for "Corvette Enthusiast" magazine about six years ago.

sub006

I know this is a custom, but did Chevy ever put a white stinger on a '67 Sunfire Yellow/white interior BB hood? I can't remember seeing one like this, I seem to remember black stingers with that color combo.

JohnZ

Nope, but Jerry liked it that way, and it was his car.