The T56 is a big mutha of a box, but the T5 is quite a bit more compact. Depends on how much work you want to do.
I spent a lot of time on the pros & cons, and went with the T5. There are a myriad of ratios & shifter positions, so I went with one that suits my cars shifter hole, and the ratios that I found desireable - 2.95:1 first, 1:1 4th, and 0.68:1 overdrive, which tie in nicely with a 3.45: diff, giving it nice easy off-the-line acceleration, and a cruising RPM of around 2000 at 110km/h.
I got mine from an F-body (Camaro/Firebird) wrecker in the US, for only a few hundred US$, and through a non-courier company, its now in a container, with other goods, and its under $100 shipping fee.
Dont get the aussie T5, they arent as good as the US ones from the same era - hence why I said "world class" box in my previous post - they have different synchros, that get rid of that notchy delay between shifts that the aussie T5s suffer. Sellers of the aussie T5s locally usually ask stupid money for them as well, so its simply not worth it compared to the better options you can get out of the US, for less money.
Youll find the World Class (WC) T5 used from about 87 onwards in the GM cars that had the SBC, and also in Mustangs (however the shifter position is a long way forward on the mustang box).
As far as bellhousings, Ive only explored the T5 ones (for both aussie & chev pattern blocks). VN-VS cast-iron V8s ran the T5 with a chev-pattern bellhousing, which would be the ideal swap for you.
My other option was a T56 onto an aussie-pattern 304. Using an LS1 T56, the input shaft is too long as it is, and the front of them dont lend themselves easily to a conversion. Heres an ebay auction showing the LS1 T56 bellhousing:
http://cgi.ebay.com/ebay...ewItem&item=380131791429However, it can be done. I researched doing the LS1 T56 onto the aussie V8, which is a lot harder than what you want to do. To fit it to the aussie V8, I can use a T5/aussie pattern bellhousing (dellow or HDT), and use an adapter plate from the states like this one:
http://cgi.ebay.com/ebay...ewItem&item=360103050875Keep that adapter plate in mind, as I will refer to it further down.
In your case, with a small block chev, you wont need the adapter, as you can get T56 bellhousings to suit SBC. Be careful though, as some of the yank T5 & T56 stuff mounts the gearbox on a lean, to angle the stick closer to the (left hand) driver.
Heres an ideal one for you - the right bellhousing & all, ready to bolt up:
http://cgi.ebay.com/ebay...ewItem&item=150379606770If you couldnt get a suitable SBC > T56 bellhousing, you could use the very common US GM SBC > T5 bellhousing (angled mount though) fitted to the 80s & 90s F-bodies, and couple it to that ebay adapter. This then lets you use an aussie LS1 T56. That adapter plate in the ebay link allows you to use the angled bellhousing as well, sitting the box back up straight if you use the alternate bolt holes. Alternatively, and SBC bellhousing for the muncie & T10 can be acccomodated by that plate from what the description says, so you have lots of options.
Cheers,
Mick
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