The_Jeremiah

hey guys, i want to buy the aftermarket 3.42 gears for my cutlass, and need a 3 series carrier for my O type rear axle. anyone have one?

filbily

im parting a 69 vista-but i dont what 3 series means-call-540-323-1499-thankis-kurt

J-(Chicago)

Try Jim at jdrace.com

or Brian trick. thetrickfamily@yahoo.com

Or Jensenracing77 on here just dragged home a few cutlasses.

The_Jeremiah

im pretty sure vista cruiser used a different rear end am i wrong? and 3 series means it holds gears in the 3 range. i have a 2 series carrier with 2.56, i want to swap gears to 3.42, so i need a 3 series carrier. thanks j ill try these guys

filbily

yes u are wrong-if u are saying that a vista rear is different than a cutlass rear-but it dosent mater because i have many a-body differentials=so take your choice-thanks-kurt

bccan

Frequently, though not universally the aftermarket gears are made to work w/ the 3.08/3.23 #671(ltd slip) or #156(? open) carrier.

You should contact Brian Trick, he can get you headed in the right direction & probably even supply you w/ proper parts.

The_Jeremiah

yup, brian got back to me and said to use the richmond gears, i need the 671 carrier, however if i want to use stock gears, i need the 588 carrier. so thats what im looking for. do you have a 671 carrier filbily?

The_Jeremiah

oh, or a 156 carrier as long as my spool will fit, lol sorry skipped that part

The_Jeremiah

ok i got a line on a complete rear end out of a 67 442 in a junk yard here, verified, 3.90 gear posi rear end. either way im spending about the same amount of money, so my question is, will the 67 rear end fit in my 69 without modification. is there any difference between the two? i havent gone to look at the rear end yet. what do you guys think? if so, im gonna go get it

507OLDS

It is a direct swap.the 12-bolt O-axle was built from 67-70. All of the mounting points are the same.

wmachine

(TJ, you caught Brian napping on this one!)
If it is indeed a 3.90, it is a P type 10-bolt, not an O type 12-bolt (cover). O type would be 3.91. It is *probably* a P type, as very few O types made it into '67s, especially 3.91s. Not that the P type from '67 would be that bad, because it probably has the 4 pinion carrier.

507OLDS

Hey,I only get about 4hrs of sleep each night,if you want to call it a night.
They starting installing the 12-bolt O-axle in the late-67 cars,& continued to the very end of 1970 production.
The factory GM gears for the O-axle were 3:91,but the Richmonds are 3:90.I highly doubt you will notice .01 worth of ratio.
The P-type 8.2" 10-bolt 3:90(three ninety) will be fine for a mild build,but since it is coming from a junkyard,it definitely needs rebuilt.The 4-pinion posi carriers are a little better,but can still be broken.My friend broke 2 of them in the early 90's,in a 70 Cutlass,running 12:50's.Those posi units can't be rebuilt,& replacement parts for the posi unit are just about zero.
What exactly are your plans with your car? Give us more info on the rear that you found,& we'll go from there.Wmachine will do all the spell-checking & proof-reading,HAHA.

The_Jeremiah

ill have to ask if its the 10 bolt cover or the 12 bolt cover. my car has got a pretty built 455 out of a 68 toronado. at least 450hp, if not 500. its got ported heads, cant remember the cam, but its over half inch of lift, edelbrock rpm intake, 850 double pumper, headers, dual exhaust, harland sharp full rollers. and some other goodies i just cant remember right now. im putting in a TH400 once i get a converter, and my goal is running slicks at the track. i dont want to spend the time or money to get a 12 bolt C clip axle. what do you guys think?

The_Jeremiah

oh and as far as the rear end goes, like i said ill have to ask him about the cover bolts, but the car itself is a 67 442, 400, 4 speed. everything is missing but the rear end lol