CB and non CB cranks

[gakali]

Other then the number of flywheel bolts, whats the differance between CB and non CB cranks. I've asked a few times but never got a straight answer. At the Dodge Garage they appear to be the same but I'm told otherwise here. Thanks.

[glhsken]

The crank snouts are different. One will not fit the others front end seal and visa/versa.

[scottie]

To clarify you can NOT use them. Or do you just have to use the crank seal that goes with the crank. I can get a 2.5 CB and would love to make a 2.2 with the 87 crank I have.

[gakali]

I wonder why you couldnt use an old crank in a CB by using the old style seal end plate part. Whats differant? Is it the inside diameter of the seal or something else?

[Mike Radowski]

i know people have machined the crank snout on one type to fit the other, although i don't see a point since the parts are so easy to get a hold of.

to make a common block 2.2, you can use a forged 2.2 crank from an 89 shelby daytona(heavy but strong), or you can use a cast 2.2 from a n/a car (1989+)

[vinniem3]

Quote:

Originally Posted by glhsken The crank snouts are different. One will not fit the others front end seal and visa/versa.

O.K so the deal is.....a fella has a 2.2 forged TII crank to sell me and i got a 2.5 *89 CB.....this isn't gonna work???

[Radiant_Red]

Quote:

Originally Posted by vinniem3 O.K so the deal is.....a fella has a 2.2 forged TII crank to sell me and i got a 2.5 *89 CB.....this isn't gonna work???

will work if its a forgded TII COMMON block crank

[Ben]

I was adamant about using an 87 crank in a CB. This was because I did not have the front seal retainer during initial assembly. I asked questions, and peeps just said: "It won't work". Well that's not good enough for a man of science, I need reasons. And I saw on Gary's site a part number for a cast crank from 86-94 for the T1/NA 8-bolt crank. And then there's the obtrusive T2 CB forged crank...

It *could* work if a CB front seal retainer was cut and machined so that seal seat was up against the block.

If someone could, put together a pic gallery of the different types of front seal retainers? I have the two most common, but I suspect there's more revisions. I'd like to see the front seal retainer for the CB Forged setups. Anyone?

[shelbyluvinfool]

the biggest problem is how plentiful the pre CB TII cranks are, and how scarce the CB TII cranks are. I have 3 CB 2.5 motors, and 1 88 TII crank. I thinkI'll stick 2.5 anyway, but now nobody wants my TII crank, since it won't readily fit the CB.

[Radiant_Red]

i have pics of this , it will not work even if re machined..

The TII non common block crank will fit in a common block however will NOT work becuz of the seal retainer (crank gear side ).. You cannot use a common block seal retainer for a non common block crank/ or vise versa. ( The screws do not line up + the dia. of the seals are diff size ). You cannot turn the Dia. down either to fit ( on non Cb crank to fit the common block seal retainer ) cuz the seal will not reach it to seal anyways. I have pics of all this if someone needs to see for proof..

The main caps are 1/4 thicker at the screw areas on a CB therefore using a 1/4 longer screw aswell.. id imagine these can interchange. but just noting the diff.

The crank gears are different aswell and cannot be interchanged ( square tooth / round tooth )..

[Ben]

Red -

I have a CB seal retainer. I'd have to show you what my thought were as far as machining goes. I'm pretty sure I could get it to work. The idea is hard to put into text. The only problem I have is as you said, the seal doesn't "reach" the crank. I was proposing moving the seal inward towards the block via machining. Once this is done, a full square tooth setup would be utilized.

But alas, I think it's too much work for not much gain.