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Original Message
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RE: FE questions |
By McQ - 10/18/2004 12:35:52 AM; IP 65.176.65.42 |
The big block and small block top loaders are different. First, the small block's tranny has a longer input shaft. Second, the big block tranny is a 2.32 1st gear close ratio 4 speed whereas the standard 289 small block is a 2.78 wide ratio. A HP 289 came with a close ratio 2.32 also. I doubt someone installed this trans in your 'stang.
It's very likely, and this was/is somewhat common, the 2889 was intalled with its bell housing to the 390 tranny. It's an easy transition. Although I know guys who have done it and complained about how "doggy" there 289/302 was off the line-outta the hole (Well duh...that's why Ford engineers felt the lower first gear 2.78 was better matched for the low torque small block.
The differences between a 390/428/427 and a small block on the outside? A whole bunch! Not much is close....both have a distributor where it should be - up front.
If your Mustang is a true original big block car it deserves to have the big block put back in it. There are other forums right here that can help you too. You'll need the engine mounts/towers, probably the radiator and lots of other small things. You'll need to do your research but it will all be worth it. And I mean worth it in actual $$. A big block '67-'70 Mustang is worth a lot of money now. |
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